СПОСОБ КОДИРОВАНИЯ CQI ДЛЯ HS-DPCCH

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УСТРОЙСТВО ОБРАБОТКИ ДАННЫХ И СПОСОБ ОБРАБОТКИ ДАННЫХ

Группа изобретений относится к области обработки данных и может быть использована для кодирования/декодирования с использованием LDPC-кода. Техническим результатом является повышение устойчивости LDPC-кода к возникновению ошибок. LDPC-код включает в себя бит информации и бит четности. Матрица контроля четности включает в себя часть информационной матрицы, соответствующую битам информации, и часть матрицы четности, соответствующую битам четности. Часть информационной матрицы представлена таблицей начальных значений матрицы контроля четности. Таблица начальных значений матрицы контроля четности представляет собой таблицу, показывающую позиции элементов 1 части информационной матрицы каждые 360 столбцов. 12 н. и 60 з.п. ф-лы, 130 ил.

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Изобретение относится к технике связи и может использоваться в системах широкополосной связи. Технический результат состоит в повышении надежности связи. Для этого передатчик включает в себя кодер данных сигнализации L1. В кодере данных сигнализации L1 генератор данных сигнализации L1 преобразует параметры передачи в данные сигнализации L1-pre и данные сигнализации L1-post и выводит данные сигнализации L1-pre и данные сигнализации L1-post, блок 121 рассредоточения энергии выполняет рассредоточение энергии в отношении данных сигнализации L1-pre и данных сигнализации L1-post по порядку, и кодер с коррекцией ошибок L1 выполняет кодирование с коррекцией ошибок на основании кодирования BCH и кодирования LDPC в отношении данных сигнализации L1-pre с рассредоточенной энергией. Это позволяет рандомизировать большое смещение данных отображения данных сигнализации L1-pre и данных сигнализации L1-post, таким образом, решая проблему концентрации мощности в конкретной выборке в пределах символов P2.

СИСТЕМА И СПОСОБ БЕСПРОВОДНОЙ СВЯЗИ С РАСПРЕДЕЛЕННЫМИ ВХОДАМИ И РАСПРЕДЕЛЕННЫМИ ВЫХОДАМИ

Изобретение относится к технике связи и может использоваться для компенсации частотного и фазового сдвигов в многоантенной системе (MAC) (MAS) с многопользовательскими (МП) (MU) передачами («МП-МАС») ("MU-MAS"). Технический результат состоит в повышении пропускной способности каналов связи. Для этого способ включает этапы, на которых передают обучающий сигнал от каждой антенны базовой станции к одному из множества беспроводных клиентских устройств, генерируют данные компенсации частотного сдвига, принимают данные компенсации частотного сдвига на базовой станции, вычисляют веса предварительного кодера МП-МАС на основе данных компенсации частотного сдвига для предварительного подавления частотного сдвига в передатчике и вычисляют множество весов предварительного кодера на основе характеристических данных канала. 3 н. и 17 з.п. ф-лы, 52 ил.

КОДИРОВАНИЕ И ДЕКОДИРОВАНИЕ УПРАВЛЯЮЩЕЙ ИНФОРМАЦИИ ДЛЯ БЕСПРОВОДНОЙ СВЯЗИ

Изобретение относится к связи, а точнее говоря к способам для кодирования и декодирования управляющей информации в системе беспроводной связи. Описываются способы для отправки управляющей информации по обратному каналу в системе беспроводной связи. В одном исполнении пользовательское оборудование (UE) отображает информацию об индикаторе качества канала (CQI) в М самых старших битов (MSB) сообщения и отображает информацию о подтверждении (ACK) в N самых младших битов (LSB) сообщения, если отправляется информация ACK, где M≥1 и N≥1. UE может кодировать сообщение с помощью блочного кода, например, кодировать М MSB с помощью первых М последовательностей базисов в блочном коде и кодировать N LSB с помощью следующих N последовательностей базисов в блочном коде. Информации ACK может включать в себя N битов информации ACK. UE может установить каждый бит информации ACK в первое значение для информации ACK или во второе значение для информации NACK. Второе значение также может использоваться для ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ И ПРИЕМА РАДИОСИГНАЛОВ ПО ТЕХНОЛОГИИ ВНУТРИПОЛОСНОЙ ПЕРЕДАЧИ ПО ОДНОМУ КАНАЛУ, ВКЛЮЧАЮЩЕЙ В СЕБЯ КОДИРОВАНИЕ НА ОСНОВЕ КОМПЛЕМЕНТАРНОГО РАЗРЕЖЕННОГО КОНТРОЛЯ ПО ЧЕТНОСТИ

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Изобретение раскрывает способ кодирования сигнала и устройство для его осуществления, используемые в абонентском блоке беспроводной системы связи. В способе кодирования сигнала с переменной скоростью передачи генерируют кадр, имеющий постоянное количество символов. С этой целью перемежают исходный кадр кодовых символов для получения последовательности перемеженных символов, повторяют последовательность перемеженных символов несколько раз, присоединяют часть последовательности перемеженных символов. При этом количество повторений и размер части последовательности перемеженных символов основаны на количестве кодовых символов в исходном кадре кодовых символов. 2 н. и 27 з.п.ф-лы, 14 ил., 7 табл.

УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ И ПРИЕМА СИГНАЛА И СПОСОБ ПЕРЕДАЧИ И ПРИЕМА СИГНАЛА

Изобретение относится к системам передачи/приема сигнала цифрового телевидения (DTV). Техническим результатом является улучшение эффективности передачи данных. Указанный технический результат достигается тем, что способ приема сигнала содержит этапы: принимают сигнал, переданный в радиочастотном диапазоне, включающем в себя по меньшей мере один радиочастотный канал, демодулируют принятый сигнал, анализируют преамбулу сигнального кадра, включающую в себя информацию уровня 1 (L1), из демодулированного сигнала, подвергают обратному чередованию биты информации уровня 1, декодируют подвергнутые обратному чередованию биты с использованием схемы декодирования с коррекцией ошибок, включающей в себя схему укорачивания и схему перфорации, и получают каналы физического уровня (PLP) из сигнального кадра с использованием декодированной с коррекцией ошибок информации уровня 1. 4 н. и 7 з.п. ф-лы, 66 ил.

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Изобретение относится к системе мобильной связи и предназначено для кодирования/декодирования блочных кодов проверки на четность с низкой плотностью LDPC с переменной длиной блока. Технический результат - предотвращение потери информационных данных. Устройство и процедура включают в себя прием информационного слова и кодирование информационного слова в блочный код LDPC в соответствии с первой матрицей проверки на четность или второй матрицей проверки на четность в зависимости от длины, используемой при генерировании информационного слова в блочный код LDPC. 12 н.п. ф-лы, 28 ил.

УСТРОЙСТВО ПЕРЕДАЧИ И СПОСОБ ПЕРЕДАЧИ АГРЕГИРОВАННОГО ПРОТОКОЛЬНОГО БЛОКА ДАННЫХ ФИЗИЧЕСКОГО УРОВНЯ

Изобретение относится к беспроводной связи и предназначено для передачи агрегированного протокольного блока данных физического уровня (агрегированный PPDU). Устройство передачи включает в себя генератор сигнала передачи, который, при функционировании, генерирует сигнал передачи, имеющий агрегированный PPDU, который включает в себя унаследованную преамбулу, унаследованный заголовок, неунаследованную преамбулу, множество неунаследованных заголовков и множество полей данных; и передатчик, который, при функционировании, передает сгенерированный сигнал передачи, причем унаследованная преамбула, унаследованный заголовок и множество неунаследованных заголовков передаются с использованием стандартной ширины полосы, в то время как неунаследованная преамбула и множество полей данных передаются с использованием переменной ширины полосы, которая является большей, чем стандартная ширина полосы, и множество наборов неунаследованного заголовка и соответствующего поля данных передаются последовательно ...

УСТРОЙСТВО ПЕРЕДАЧИ И СПОСОБ ПЕРЕДАЧИ АГРЕГИРОВАННОГО ПРОТОКОЛЬНОГО БЛОКА ДАННЫХ ФИЗИЧЕСКОГО УРОВНЯ

Изобретение относится к беспроводной связи, более конкретно к способу форматирования и передачи агрегированного PPDU (протокольного блока данных физического уровня) в системе беспроводной связи. Технический результат заключается в повышении эффективности связи. Заявлено устройство приема, содержащее приемник, который принимает сигнал передачи, имеющий агрегированный протокольный блок данных физического уровня (агрегированный PPDU). Сигнал передачи включает в себя первый набор и один или более вторых наборов. Первый набор включает в себя множество первых полей, расположенных в следующем порядке: поле унаследованной преамбулы, поле унаследованного заголовка, поле неунаследованного заголовка, поле неунаследованной преамбулы и поле данных на оси времени. Каждый из вторых наборов включает в себя множество вторых полей, расположенных в следующем порядке: поле неунаследованного заголовка и поле данных на оси времени. Устройство приема содержит также декодер, который декодирует сигнал передачи, ...

УСТРОЙСТВО И СПОСОБ ДЛЯ ПЕРЕДАЧИ И ПРИЕМА ИНФОРМАЦИИ ДЛЯ ОБНАРУЖЕНИЯ ОШИБКИ В СИСТЕМЕ СВЯЗИ

Изобретение относится к системе связи для передачи пакетных данных. Предложено устройство для формирования битов обнаружения ошибки в системе связи, которая передает данные, имеющие продолжительность 1 временной интервал, продолжительность 2 временных интервала или продолжительность 4 временных интервала, по каналу данных. Устройство содержит блок битов обнаружения ошибки для формирования битов обнаружения ошибки для управляющей информации с использованием исходного значения, соответствующего продолжительности управляющей информации, из числа первого, второго и третьего исходных значений, для прикрепления битов обнаружения ошибки к управляющей информации и выдачи управляющей информации с прикрепленными битами обнаружения ошибки. Первое исходное значение соответствует продолжительности 1 временной интервал, второе исходное значение соответствует продолжительности 2 временных интервала и равно первому исходному значению, а третье исходное значение соответствует продолжительности 4 временных ...

УСТРОЙСТВО И СПОСОБ ДЛЯ ПЕРЕДАЧИ/ПРИЕМА КОНТРОЛЬНЫХ СИГНАЛОВ В СИСТЕМЕ СВЯЗИ, ИСПОЛЬЗУЮЩЕЙ СХЕМУ МУЛЬТИПЛЕКСИРОВАНИЯ С ОРТОГОНАЛЬНЫМ ЧАСТОТНЫМ РАЗДЕЛЕНИЕМ КАНАЛОВ

Изобретение относится к технике связи. Технический результат состоит в минимизации взаимного влияния между контрольными сигналами. Для этого предложен способ для предоставления контрольного символа для идентификации базовой станции в системе связи со многими входами и многими выходами (MIMO), имеющей одну или более передающих антенн, при этом контрольный символ состоит из первой последовательности, обладающей хорошей характеристикой идентификации соты, и второй последовательности для уменьшения отношения пиковой мощности к средней мощности (PAPR) для всех контрольных символов. 5 н. и 34 з.п. ф-лы, 10 ил., 5 табл.

РАБОТА КАНАЛА КВИТИРОВАНИЯ ПРЯМОЙ ЛИНИИ СВЯЗИ ДЛЯ ДАННЫХ ОБРАТНОЙ ЛИНИИ СВЯЗИ

Изобретение относится к системам связи. Раскрыт способ квитирования в системе беспроводной связи. Первоначально кадр обратного дополнительного канала (R-SCH) принимается на базовой станции. Затем базовая станция передает сигнал квитирования (АСК), если качество принятого кадра R-SCH указано как хорошее. Сигнал отрицательного квитирования (NAK) передается только, если принятый кадр данных указан как плохой, но имеет достаточную энергию, чтобы совместно с энергией повторной передачи кадра данных ее было достаточно для правильного декодирования кадра данных. Если наилучшая базовая станция известна, то способ квитирования может обратить передачу сигналов квитирования для наилучшей базовой станции, чтобы передавался только сигнал NAK. При отсутствии квитирования предполагается положительное квитирование. Это делается для минимизации требований к мощности передачи. 9 н. и 22 з.п. ф-лы, 8 ил.

УСТРОЙСТВО КОДИРОВАНИЯ С ИСПРАВЛЕНИЕМ ОШИБОК И СПОСОБ КОДИРОВАНИЯ С ИСПРАВЛЕНИЕМ ОШИБОК, ИСПОЛЬЗУЕМЫЙ В НЕМ

Устройство кодирования с исправлением ошибок, в котором конструкция устройства простая; используется итеративное декодирование для достижения декодирования с точностью, близкой к оптимальной; и простое математическое выражение используется для выполнения оценки характеристик области зоны насыщения без использования каких-либо экспериментов на компьютере. В блоке 1 умножения многочленов узлы (12-1-12-(m-1)) умножения многочленов (n-1)-го порядка дополнительно делят строку информационных битов, которая была разделена на блоки для кодирования с исправлением ошибок, на (m-1) блоков, имеющих длину n, и один блок, имеющий длину (n-r) (где тип представляют целые числа, равные или большие двух, и где г представляет целое число от 1 до n включительно); принимают блоки, которые имеют длину n, разделенных строк информационных битов; и выводят серию, имеющую такую же длину. Узел 2 деления многочленов r-го порядка принимает добавление выходов от соответствующих узлов (12-1-12-(m-1)) умножения многочленов ...

ЭФФЕКТИВНЫЕ СПОСОБЫ И УСТРОЙСТВА АВТОМАТИЧЕСКОГО ЗАПРОСА ПОВТОРЕНИЯ

Изобретение относится к области техники связи и, более конкретно, к способам автоматических запросов повторения в системе беспроводной связи множественного доступа. Сущность изобретения состоит в том, что используют различные сигналы ОПДТ (отрицательного подтверждения) для указания различных относительных уровней успеха в отношении неудачной попытки декодирования полученного сигнала. Сигнал ПДТ (подтверждения) используют в случае успешного декодирования. Устройство, которое сгенерировало и передало исходный кодированный сигнал, получает сигнал ОПДТ и выбирает часть избыточной информации, например дополнительные биты исправления ошибок, подлежащие передаче на основании значения сигнала ОПДТ. Если сигнал ОПДТ указывает низкий уровень успеха декодирования, указывающий относительно большое количество ошибок в декодированном сигнале, выбирают и передают большой набор избыточной информации. Если сигнал ОПДТ указывает относительно успешное декодирование, например относительно немного ошибок, выбирают ...

СПОСОБ И УСТРОЙСТВО ДЛЯ КАНАЛЬНОГО КОДИРОВАНИЯ И ДЕКОДИРОВАНИЯ В СИСТЕМЕ СВЯЗИ, В КОТОРОЙ ИСПОЛЬЗУЮТСЯ КОДЫ КОНТРОЛЯ ЧЕТНОСТИ С НИЗКОЙ ПЛОТНОСТЬЮ

Изобретение относится к системе связи, в которой используются коды контроля четности с низкой плотностью (LDPC). Техническим результатом является повышение производительности канального кодирования/декодирования с применением LDPC-кодов. Способ декодирования канала с использованием LDPC-кода содержит этап, на котором демодулируют сигнал, переданный от передатчика. Способ также содержит этап определения позиций выколотых битов четности путем оценки информации о предопределенном порядке наборов битов четности, которые следует выколоть, и количества наборов битов четности. Далее согласно способу декодируют данные, используя упомянутые позиции выколотых битов четности. 2 н. и 10 з.п. ф-лы, 17 ил., 4 табл.

МОБИЛЬНАЯ СТАНЦИЯ И СПОСОБ РАСШИРЕНИЯ ИНФОРМАЦИОННОЙ ЕМКОСТИ КАДРА ДАННЫХ

Изобретение относится к системам передачи данных. Техническим результатом является увеличение количества информации, передаваемой в кадре данных, при фиксированной длине пачки. Для этого, согласно одному варианту изобретения, заменяют часть управляющей части канально-кодированного кадра вторым информационным элементом, согласно другому варианту изобретения - дополняют информационную часть кадра данных до 11 бит, а после сверточного кодирования удаляют из этой части 6 бит. 4 с.п. ф-лы, 7 ил.

УСТРОЙСТВО ОБРАБОТКИ ДАННЫХ И СПОСОБ ОБРАБОТКИ ДАННЫХ

Изобретение относится к технике связи и может быть использовано для обработки данных. Технический результат – обеспечение хорошего качества связи при передаче данных, используя код LDPC. Для этого бит кода для кода LDPC, в котором длина кода составляет 16200 битов и скорость кодирования составляет 8/15, обменивают с символьным битом символа, соответствующего любой из 8 точек сигнала, определенных 8PSK. Когда 3 бита битов кода, сохраненных в трех модулях хранения, имеющих емкость хранения 16200/3 битов, и считываемых поразрядно из модулей хранения, выделяют для одного символа, (#i+1)-й бит от старшего значащего бита из 3 битов из битов кода устанавливают в бит b#i, (#i+1)-й бит от старшего значащего бита из 3 битов символьных битов одного символа устанавливают в бит y#i и бит b0 обменивают на бит y1, бит b1 обменивают на бит у0 и бит b2 обменивают на бит у2. 4 н. и 2 з.п. ф-лы, 79 ил.

УСТРОЙСТВО БЕСПРОВОДНОЙ СВЯЗИ И СПОСОБ БЕСПРОВОДНОЙ СВЯЗИ

Изобретение относится к беспроводной связи. Техническим результатом является обеспечение скорости передачи данных, сравнимой с самыми современными проводными цифровыми интерфейсами в беспроводной связи. Устройство беспроводной связи, служащее в качестве устройства NG60 WiGig, включает в себя генератор PPDU, который генерирует MF PPDU (протокольный блок данных физического слоя) PHY-слоя управления, включающий в себя унаследованную преамбулу, унаследованный заголовок, NG60 заголовок (не-унаследованный заголовок), поле данных, и информацию идентификации, указывающую, что включен не-унаследованный заголовок, и передатчик, который передает сгенерированный MF PPDU PHY-слоя управления. 2 н. и 8 з.п. ф-лы, 18 ил.

СПОСОБ И УСТРОЙСТВО ДЛЯ КАНАЛЬНОГО КОДИРОВАНИЯ И ДЕКОДИРОВАНИЯ В СИСТЕМЕ СВЯЗИ, В КОТОРОЙ ИСПОЛЬЗУЮТСЯ КОДЫ КОНТРОЛЯ ЧЕТНОСТИ С НИЗКОЙ ПЛОТНОСТЬЮ

Изобретение относится к системе связи, использующей коды Контроля Четности с Низкой Плотностью (Low-Density Parity-Check, LDPC), и, в частности, к устройству и способу канального кодирования/декодирования для генерации LDPC-кодов с разными длинами кодового слова и разными скоростями кодирования из LDPC-кода, заданного в модуляции высшего порядка. Техническим результатом является повышение производительности канального кодирования/декодирования в системе связи, где применяются LDPC-коды. Указанный результат достигается тем, что в способе кодирования определяют схему модуляции для передачи символа; определяют шаблон сокращения с учетом определенной схемы модуляции; группируют столбцы, соответствующие информационному слову в матрице контроля четности LDPC-кода в множество групп столбцов; упорядочивают группы столбцов; определяют диапазон результирующего информационного слова, который желательно получить посредством сокращения информационного слова; на основании диапазона результирующего информационного ...

ПРИЕМНОЕ УСТРОЙСТВО, СПОСОБ ПРИЕМА, ПРОГРАММА И ПРИЕМНАЯ СИСТЕМА

Изобретение относится к приемному устройству, способу приема, носителю записи и приемной системе для выполнения процесса временного деперемежения, пригодного для приемников, совместимых с DVB-T.2. Техническим результатом является обеспечение возможности одновременного приема данных и сигналов управления одним и тем же устройством. Приемное устройство, соответствующее стандарту Т.2 цифрового телевещания, известному как DVB-T2, выполненное с возможностью выполнения декодирования кодов низкой плотности с контролем четкости (НПКЧ) для магистралей физического уровня (МФУ) (PLC), обозначающих потоки данных, и уровня 1 (L1), представляющего параметры передачи физического уровня. Приемное устройство включает в себя устройство декодирования НПКЧ, выполненное с возможностью того, что, когда сигнал кодированных НПКЧ данных и сигнал управления кодированной НПКЧ передачей передаются мультиплексированными, упомянутое устройство декодирования НПКЧ может декодировать как сигнал данных, так и сигнал управления ...

СПОСОБ КОДИРОВАНИЯ И УСТРОЙСТВО СВЯЗИ

Изобретение относится к средствам кодирования информационной битовой последовательности. Технический результат - уменьшение задержки при декодировании информационной битовой последовательности. Получают подлежащую кодированию информационную битовую последовательность. Кодируют подлежащую кодированию информационную битовую последовательность на основе двоичного вектора P1 первого кода для получения кодированной битовой последовательности, где P1 определяется на основе двоичного вектора P2 второго кода и двоичного вектора P3 третьего кода, P1 указывает информационный бит и замороженный бит первого кода, P2 указывает информационный бит и замороженный бит второго кода, P3 указывает информационный бит и замороженный бит третьего кода, длина кода первого кода равна n1, количество информационных битов первого кода равно k1, длина кода второго кода равна n2, количество информационных битов второго кода равно k2, длина кода третьего кода равна n3, количество информационных битов третьего кода равно ...

УПРАВЛЕНИЕ МОЩНОСТЬЮ СИГНАЛИЗАЦИИ ОБРАТНОЙ СВЯЗИ

Раскрыт способ функционирования пользовательского оборудования (10) в сети радиодоступа. Способ содержит передачу сигнализации обратной связи, относящейся к множеству сот, причем сигнализация обратной связи передается на уровне мощности, при этом уровень мощности основан на разнице между значением V и значением U, причем значение V указывает общее количество назначений планирования, которое пользовательское оборудование (10) ожидает принять для множества сот, и значение U указывает общее количество назначений планирования для множества сот, принятых пользовательским оборудованием (10). Раскрытие также относится к соответствующим устройствам и способам. 2 н. и 14 з.п. ф-лы, 4 ил.

Способ и устройство

Изобретение относится к области связи. Технический результат заключается в обеспечении возможности эффективной передачи данных за счет определения фиксированной позиции версий избыточности RV и достигается за счет использования информации о выбранной версии избыточности в пользовательском устройстве при связи с базовой станцией, при этом позиция версии избыточности может удовлетворять одному или более критериям. 2 н. и 15 з.п. ф-лы, 11 ил.

РАБОТА КАНАЛА КВИТИРОВАНИЯ ПРЯМОЙ ЛИНИИ СВЯЗИ ДЛЯ ДАННЫХ ОБРАТНОЙ ЛИНИИ СВЯЗИ

... 1. Способ квитирования в системе беспроводной связи, содержащий этапы, на которых принимают кадр данных канала трафика обратной линии связи, передают сигнал квитирования (АСК), если качество принятого кадра данных указано как хорошее, и передают сигнал отрицательного квитирования (NAK) только, если принятый кадр данных указан как плохой, но имеет достаточную энергию, чтобы совместно с энергией повторной передачи кадра данных, ее было достаточно для правильного декодирования кадра данных. 2. Способ по п.1, в котором канал трафика обратной линии связи является обратным дополнительным каналом (R-SCH). 3. Способ по п.1, который также содержит этап, на котором определяют качество принятого кадра данных. 4. Способ по п.3, в котором на этапе определения качества принятого кадра данных указывают качество кадра как хорошее, когда пилот-сигнал обратной линии связи имеет достаточную энергию для правильного декодирования кадра. 5. Способ по п.1, который также содержит этап, на котором передают дельту ...

УСТРОЙСТВО ОБРАБОТКИ ДАННЫХ И СПОСОБ ОБРАБОТКИ ДАННЫХ

... 1. Устройство обработки данных, содержащее:блок кодирования, который кодирует информационный бит в LDPC-код, имеющий длину кода 16200 битов и кодовую скорость 12/15, на основании матрицы контроля четности кода разреженного контроля четности (LDPC),где LDPC-код включает в себя информационный бит и бит четности,где матрица контроля четности включает в себя информационную часть матрицы, соответствующую информационному биту, и часть матрицы четности, соответствующую биту четности,где информационная часть матрицы представлена таблицей начальных значений матрицы контроля четности игде таблица начальных значений матрицы контроля четности представляет собой таблицу, представляющую позиции элементов 1 в информационной части матрицы с интервалом 360 столбцов, и представляет собой2. Устройство обработки данных по п. 1,в котором, если строка исходной таблицы матрицы контроля четности представлена i и длина битов четности LDPC-кода представлена М,(2+360×(i-1))-й столбец матрицы контроля четности представляет ...

СПОСОБ И УСТРОЙСТВО ДЛЯ КАНАЛЬНОГО КОДИРОВАНИЯ И ДЕКОДИРОВАНИЯ В СИСТЕМЕ СВЯЗИ, ИСПОЛЬЗУЮЩЕЙ КОДЫ КОНТРОЛЯ ЧЕТНОСТИ С НИЗКОЙ ПЛОТНОСТЬЮ

Изобретение относится к средствам кодирования и декодирования с контролем на четность. Техническим результатом является оптимизация производительности систем связи, использующих коды контроля четности с низкой плотностью (Low-Density Parity-Check, LDPC). В способе определяют количество битов четности, которые должны быть подвергнуты выкалыванию, разделяют биты четности на предопределенные интервалы и определяют количество выкалываемых битов, которые подвергаются выкалыванию в этих предопределенных интервалах, определяют позиции выкалываемых битов четности, соответствующих определенному количеству выкалываемых битов, многократно применяют выкалывание к упомянутым выкалываемым битам четности, соответствующим упомянутым определенным позициям в упомянутых предопределенных интервалах. Упомянутые предопределенные интервалы определяются путем разделения длины битов четности на длину одной группы столбцов в матрице контроля четности. 8 н. и 9 з.п. ф-лы, 12 ил., 2 табл.

УСТРОЙСТВО И СПОСОБ КОДИРОВАНИЯ-ДЕКОДИРОВАНИЯ БЛОЧНОГО КОДА ПРОВЕРКИ НА ЧЕСТНОСТЬ С НИЗКОЙ ПЛОТНОСТЬЮ С ПЕРЕМЕННОЙ ДЛИНОЙ БЛОКА

... 1. Способ кодирования блочного кода проверки на четность с низкой плотностью (LDPC), имеющего переменную длину, заключающийся в том, что принимают информационное слово; и кодируют информационное слово в блочный код LDPC на основе одной матрицы из первой матрицы проверки на четность и второй матрицы проверки на четность в зависимости от длины, которая должна использоваться при генерировании информационного слова в блочный код LDPC. 2. Способ по п.1, в котором дополнительно модулируют блочный код LDPC в символ модуляции, используя схему модуляции; и передают модулированный символ. 3. Способ по п.1, в котором вторая матрица проверки на четность представляет собой матрицу проверки на четность, определенную путем изменения размера первой матрицы проверки на четность. 4. Способ по п.3, в котором первая матрица проверки на четность представляет собой матрицу проверки на четность, сгенерированную так, что блочный код LDPC имеет заданную длину и удовлетворяется при заданной скорости кодирования.

СПОСОБ И УСТРОЙСТВО КОДИРОВАНИЯ

Изобретение относится к средствам для кодирования и декодирования данных. Технический результат заключается в повышении эффективности кодирования. Выполняют кодирование с CRC A подлежащих кодированию информационных битов, основываясь на полиноме CRC, чтобы получить первую битовую последовательность, где первая битовая последовательность содержит L битов CRC и A информационных битов. Выполняют полярное кодирование первой битовой последовательности. Основываясь на улучшенном полиноме CRC, реализуется кодирование, удовлетворяющее требованиям FAR. При этом полином CRC может быть реализован при помощи регистра сдвига, а L битов CRC в кодированной с CRC битовой последовательности располагаются после А подлежащих кодированию информационных битов. Кроме того, передают посредством устройства кодирования полярно кодированную битовую последовательность, а перед передачей полярно кодированной битовой последовательности устройство кодирования выполняет согласование уровней полярно кодированной битовой ...

СПОСОБ ОБРАБОТКИ ДАННЫХ, ОКОНЕЧНОЕ УСТРОЙСТВО И СЕТЕВОЕ УСТРОЙСТВО

Изобретение относится к области связи. Технический результат – улучшение гибкости процессов кодирования и декодирования. Для этого предусмотрено: прием оконечным устройством первой указывающей информации, используемой для сегментации кодовых блоков, отправляемой сетевым устройством; выполнение оконечным устройством в соответствии с первой указывающей информацией сегментации кодовых блоков в отношении данных с получением по меньшей мере одного кодового блока, причем данные являются данными, принятыми оконечным устройством от сетевого устройства, или данные являются данными, предназначенными для отправки оконечным устройством сетевому устройству; и кодирование или декодирование оконечным устройством по меньшей мере одного кодового блока. 2 н. и 14 з.п. ф-лы, 6 ил., 5 табл.

СПОСОБ И УСТРОЙСТВО ДЛЯ КОДИРОВАНИЯ

Изобретение относится к средствам для кодирования. Технический результат заключается в повышении эффективности кодирования. Выполнение CRC кодирования А информационных бит, подлежащих кодированию, на основании CRC полинома, для получения первой битовой последовательности, где первая последовательность битов включает в себя L CRC биты и А информационные биты, L=6; и выполнение полярного кодирования первой битовой последовательности. На основании улучшенного CRC полинома, осуществляют кодирование, удовлетворяющие FAR требованию. 18 н. и 30 з.п. ф-лы, 12 ил.

СПОСОБ И УСТРОЙСТВО КОДИРОВАНИЯ ПОЛЯРНЫМ КОДОМ, БЕСПРОВОДНОЕ УСТРОЙСТВО И МАШИНОЧИТАЕМЫЙ НОСИТЕЛЬ

Изобретение относится к области технологий связи. Технический результат - повышение надежности передачи в поляризованных каналах при кодировании полярным кодом. Для этого предусмотрено получение первой последовательности для кодирования K подлежащих кодированию битов, которая включает в себя порядковые номера N поляризованных каналов, которые расположены в первой последовательности на основе надежности N поляризованных каналов, K является положительным целым числом, N является базовой кодовой длиной полярного кода, N является положительной целочисленной степенью 2, и K≤N; выбор порядковых номеров K поляризованных каналов из первой последовательности в порядке убывания надежности; и размещение подлежащих кодированию битов на основе выбранных порядковых номеров K поляризованных каналов и выполнение кодирования полярным кодом над подлежащими кодированию битами. 18 н. и 10 з.п. ф-лы, 6 ил., 60 табл.

СПОСОБ И УСТРОЙСТВО ДЛЯ КОДИРОВАНИЯ И ДЕКОДИРОВАНИЯ ДАННЫХ ВЫСОКОСКОРОСТНОГО СОВМЕСТНО ИСПОЛЬЗУЕМОГО КАНАЛА УПРАВЛЕНИЯ

... 1. Узел Б для кодирования данных части 2 в высокоскоростном совместно используемом канале управления (HS-SCCH), содержащий: ! модуль контроля циклическим избыточным кодом (CRC) для формирования разрядов CRC на основе данных части 1 и данных части 2, причем разряды CRC прикрепляются к данным части 2, количество разрядов CRC меньше идентификатора (ID) модуля беспроводной передачи/приема (WTRU); ! модуль маскирования для выполнения специфичного для WTRU маскирования с помощью маски по меньшей мере над одним из данных части 2 и разрядов CRC; и ! передатчик для передачи данных части 1 и данных части 2 с прикрепленными разрядами CRC после специфичного для WTRU маскирования. ! 2. Узел Б по п.1, в котором маска является прореженным ID WTRU с длиной, равной разрядам CRC. ! 3. Узел Б по п.1, в котором маска является ID WTRU и часть ID WTRU используется для маскирования разрядов CRC, а остаток ID WTRU используется для маскирования данных части 2. ! 4. Узел Б по п.1, в котором модуль маскирования формирует ...

ДИНАМИЧЕСКОЕ ВЫДЕЛЕНИЕ ЧАСТОТЫ И СХЕМА МОДУЛЯЦИИ ДЛЯ УПРАВЛЯЮЩЕЙ ИНФОРМАЦИИ

... 1. Устройство, содержащее !по меньшей мере один процессор, выполненный с возможностью отправлять управляющую информацию в первой частотной позиции, если данные не отправляются, и отправлять управляющую информацию и данные во второй частотной позиции, отличной от первой частотной позиции, если данные отправляются; и ! запоминающее устройство, соединенное, по меньшей мере, с одним процессором. ! 2. Устройство по п.1, в котором, по меньшей мере, один процессор выполнен с возможностью принимать назначение поднесущих для передачи по нисходящей линии связи и определять первую частотную позицию на основе назначения. ! 3. Устройство по п.1, в котором первая частотная позиция соответствует первому набору поднесущих, назначенных для отправки управляющей информации, и в котором вторая частотная позиция соответствует второму набору поднесущих, назначенных для отправки данных. ! 4. Устройство по п.1, в котором, по меньшей мере, один процессор выполнен с возможностью отправлять управляющую информацию ...

СПОСОБ И УСТРОЙСТВО ГЕНЕРИРОВАНИЯ ГИБРИДНОГО ПОЛЯРНОГО КОДА

СИГНАЛИЗАЦИЯ ИНФОРМАЦИИ РАЗРЕШЕНИЯ ПЛАНИРОВАНИЯ В СИСТЕМЕ БЕСПРОВОДНОЙ СВЯЗИ

... 1. Объект инфраструктуры беспроводной связи, содержащий:приемопередатчик;контроллер, коммуникативно связанный с приемопередатчиком,причем контроллер выполнен с возможностью формирования битов четности на основании информации разрешения планирования,при этом контроллер выполнен с возможностью кодирования битов четности на основании дополнительной информации разрешения планирования, не используемой для формирования битов четности,причем кадр, внутри которого должна передаваться информация разрешения планирования, указывает упомянутую дополнительную информацию разрешения планирования, при этом упомянутый кадр входит в состав многокадровой структуры, ипри этом закодированные биты четности объединяются с информацией разрешения планирования.2. Объект по п.1, в котором контроллер выполнен с возможностью кодирования битов четности посредством скремблирования битов четности при помощи уникального набора битов, соответствующего дополнительной информации разрешения планирования, не используемой для ...

ПЕРЕДАЧА УПРАВЛЯЮЩИХ ДАННЫХ ВОСХОДЯЩЕЙ ЛИНИИ СВЯЗИ

... 1. Способ для обеспечения информации обратной связи согласно структуре обработки, содержащий этапы, на которых:- формируют набор входных битов, ассоциированный с информацией обратной связи;- кодируют набор входных битов для создания кодированного набора выходных битов;- скремблируют кодированный набор выходных битов с использованием последовательности скремблирования для создания набора скремблированных выходных битов;- модулируют набор скремблированных выходных битов для создания блока модулированных символов; и- применяют код расширения к блоку модулированных символов.2. Способ по п.1, в котором последовательность скремблирования извлекают в качестве функции по меньшей мере от одного из следующего: идентификатора беспроводного приемопередающего модуля и одного или более идентификаторов сот.3. Способ по п.1, в котором набор скремблированных выходных битов модулируют с использованием квадратурной фазовой манипуляции (QPSK) для создания блока модулированных символов.4. Способ по п.1, в котором ...

СПОСОБ И УСТРОЙСТВО ДЛЯ КАНАЛЬНОГО КОДИРОВАНИЯ И ДЕКОДИРОВАНИЯ В СИСТЕМЕ СВЯЗИ, В КОТОРОЙ ИСПОЛЬЗУЮТСЯ КОДЫ КОНТРОЛЯ ЧЕТНОСТИ С НИЗКОЙ ПЛОТНОСТЬЮ

... 1. Способ для декодирования канала с использованием кода Контроля Четности с Низкой Плотностью (LDPC), причем способ содержит этапы, на которых:демодулируют принятый сигнал;определяют позицию сокращенных информационных битов; идекодируют демодулированный сигнал, принимая во внимание определенную позицию сокращенных информационных битов,причем определение позиции сокращенных информационных битов содержитопределение числа информационных битов, которые должны быть сокращены; иопределение числа групп битов, которые должны быть сокращены на основе определенного числа информационных битов, которые должны быть сокращены; иполучают предварительно определенный порядок групп битов.2. Способ по п.1, в котором определение позиции сокращенных информационных битов дополнительно содержит:определение числа информационных битов, которые необходимо получить посредством сокращения, для определения числа информационных битов, которые должны быть сокращены.3. Способ по п.1, в котором предварительно определенный ...

СПОСОБ И УСТРОЙСТВО ДЛЯ КАНАЛЬНОГО КОДИРОВАНИЯ И ДЕКОДИРОВАНИЯ В СИСТЕМЕ СВЯЗИ, В КОТОРОЙ ИСПОЛЬЗУЮТСЯ КОДЫ КОНТРОЛЯ ЧЕТНОСТИ С НИЗКОЙ ПЛОТНОСТЬЮ

... 1. Способ декодирования канала с использованием кода контроля четности с низкой плотностью (LDPC), содержащий этапы, на которых:демодулируют сигнал, переданный от передатчика;определяют информацию позиции выколотых битов четности путем оценки информации о предопределенном порядке наборов битов четности, которые следует выколоть, и количества наборов битов четности; идекодируют данные, используя упомянутые позиции выколотых битов четности,причем определение информации позиции выколотых битов четности содержит этапы, на которых:определяют количество битов четности, которые следует выколоть;определяют количество наборов битов четности, которые следует выколоть, на основе определенного количества битов четности, которые следует выколоть; иполучают предопределенный порядок наборов битов четности.2. Способ по п.1, в котором предопределенный порядок наборов битов четности, которые следует выколоть, определяют как 6, 4, 13, 9, 18, 8, 15, 20, 5, 17, 2, 22, 24, 7, 12, 1, 16, 23, 14, 0, 21, 10, 19 ...

СИСТЕМА И СПОСОБ, ПРЕДНАЗНАЧЕННЫЕ ДЛЯ ПЕРЕДАЧИ И ПРИЕМА ДАННЫХ

... 1. Способ передачи данных, заключающийся в том, что ! помещают один или несколько сегментов данных в двумерную структуру данных, имеющую первые направленные размещения и вторые направленные размещения, причем первые направленные размещения перпендикулярны вторым направленным размещениям, и при этом помещение производят относительно первых направленных размещений; ! добавляют к каждому из вторых направленных размещений одну или несколько соответствующих вычисленных величин характеристик; ! передают содержимое одного или нескольких из первых направленных размещений, которое содержит части упомянутых величин характеристик; и ! передают один или несколько сегментов данных; ! причем этап, на котором передают один или несколько сегментов данных, содержит подэтап, на котором передают содержимое каждого из первых направленных размещений, которое содержит один или несколько сегментов данных; ! причем один или несколько сегментов данных передают перед помещением; ! причем дополнительно добавляют ...

КОДИРОВАНИЕ И ДЕКОДИРОВАНИЕ УПРАВЛЯЮЩЕЙ ИНФОРМАЦИИ ДЛЯ БЕСПРОВОДНОЙ СВЯЗИ

... 1. Способ отправки информации в системе связи, содержащий этапы, на которых: ! преобразуют первую информацию в M самых старших битов (MSB) сообщения, где M равно единице или больше; ! преобразуют вторую информацию в N самых младших битов (LSB) сообщения, если отправляется вторая информация, где N равно единице или больше; и ! кодируют сообщение с помощью блочного кода, где первая информация отправляется отдельно или вместе со второй информацией в сообщении, и где вторая информация отправляется вместе с первой информацией или не отправляется в сообщении. ! 2. Способ по п.1, в котором блочный код содержит множество последовательностей базисов для множества информационных битов, и в котором этап, на котором кодируют сообщение с помощью блочного кода, содержит этапы, на которых ! кодируют M MSB сообщения с помощью первых M последовательностей базисов в блочном коде, и ! кодируют N LSB сообщения с помощью следующих N последовательностей базисов в блочном коде, если отправляется вторая информация ...

МУЛЬТИПЛЕКСИРОВАНИЕ И ПЕРЕДАЧА НЕСКОЛЬКИХ ПОТОКОВДАННЫХ В СИСТЕМЕ РАДИОСВЯЗИ С НЕСКОЛЬКИМИ НЕСУЩИМИ

... 1. Способ широковещания и многопунктовой передачи данных в системе радиосвязи с несколькими несущими, заключающийся в том, что обрабатывают множество потоков данных для получения множества потоков символов данных, одного потока символов данных для каждого потока данных, выделяют элементы передачи каждому из множества потоков данных, причем каждый элемент передачи соответствует одному поддиапазону в одном периоде символа и может использоваться для передачи одного символа данных, отображают символы данных в каждом потоке символов данных на элементы передачи, выделенные соответствующему потоку данных, и формируют составной поток символов символами данных для множества потоков данных, отображенными на выделенные элементы передачи, причем каждый поток данных является независимо восстанавливаемым приемником на основе символов данных, включенных в составной поток символов для потока данных. 2. Способ по п.1, в котором дополнительно мультиплексируют символы дополнительной служебной сигнализации ...

ЭФФЕКТИВНОЕ ПРОЕКТНОЕ РЕШЕНИЕ ПО МОДУЛЮ ПЕРЕМЕЖЕНИЯ ДЛЯ ПОЛЯРНЫХ КОДОВ

СПОСОБ КОДИРОВАНИЯ УПРАВЛЯЮЩЕЙ В СИСТЕМЕ СВЯЗИ, А ТАКЖЕ СПОСОБ И УСТРОЙСТВО ДЛЯ ПЕРЕДАЧИ И ПРИЕМА УПРАВЛЯЮЩЕЙ ИНФОРМАЦИИ

... 1. Способ кодирования и передачи управляющей информации, содержащий этапы, на которых:формируют один или более кодированных блоков из управляющей информации; ипередают кадр, включающий в себя эти один или более кодированных блоков,при этом при формировании кодированных блоков управляющей информации:определяют количество кодированных блоков, которые должны быть сформированы для переноса управляющей информации, на основе количества битов управляющей информации и конкретного опорного значения,вычисляют количество битов информации, соответствующих каждому кодированному блоку, на основе упомянутого определенного количества кодированных блоков,вычисляют количество битов контроля четности, которые должны быть исключены в каждом кодированном блоке, ивыполняют исключение этого количества битов контроля четности в каждом кодированном блоке.2. Способ по п.1, в котором количество кодированных блоков определяют с использованием значения, получаемого посредством деления количества битов управляющей информации ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ ТЕКУЩЕГО ОТНОШЕНИЯ СИГНАЛ-ШУМ ПРИ ДЕКОДИРОВАНИИ LDPC-КОДОВ (ВАРИАНТЫ)

... 1. Способ измерения текущего отношения сигнал-шум при декодировании LDPC-кодов, при котором с выхода демодулятора получают входное кодовое слово с «жесткими» или «мягкими» решениями, осуществляют декодирование входного кодового слова в LDPC-декодере, формируют выходное декодированное кодовое слово, при наличии на входе декодера следующего входного кодового слова осуществляют его прием и обработку, а при отсутствии завершают декодирование, отличающийся тем, что:- для заданного типа LDPC-декодера предварительно экспериментально или теоретически определяют зависимость среднего числа итераций при декодировании входного кодового слова от отношения сигнал-шум;- при декодировании каждого входного кодового слова фиксируют количество итераций, осуществленных в процессе декодирования;- осуществляют усреднение полученных значений количества итераций на заданном интервале времени;- на основе данного усредненного значения количества итераций и полученной заранее зависимости среднего числа итераций при ...

СПОСОБ ПЕРЕДАЧИ СИГНАЛОВ С ПАРАМЕТРАМИ КВАНТОВАНИЯ ВРЕМЕНИ В СЛУЖЕБНОЙ ИНФОРМАЦИИ

... 1. Способ передачи сигналов в сети связи, заключающийся в том, что обеспечивают набор параметров квантования времени для описания пакетных сигналов данных, связывают упомянутые параметры квантования времени со служебной информацией, и формируют пакетные сигналы в соответствии с упомянутым набором параметров квантования времени. 2. Способ по п.1, в котором обеспечение упомянутого набора параметров квантования времени содержит этап, на котором определяют минимальное время между передачей пакетных сигналов. 3. Способ по п.1, в котором обеспечение упомянутого набора параметров квантования времени содержит этап, на котором определяют требуемую скорость выведения данных из буфера для приема и выведения пакетного сигнала. 4. Способ по п.1, в котором обеспечение упомянутого набора параметров квантования времени содержит этап, на котором определяют максимальную среднюю скорость передачи за один цикл квантования времени. 5. Способ по п.1, в котором связывание упомянутых параметров квантования времени ...

Übertragung mit mehreren Auflösungen bei Verwendung von Mehrträgersignalen

Übertragung mit mehreren Auflösungen, insbesondere für Mehrträgersysteme

UNTERWASSERKOMMUNIKATIONSSYSTEM

DYNAMISCHES RUECKGEKOPPELTES SCHIEBEREGISTER

DIGITALDATENUEBERTRAGUNGSSYSTEM MIT PARITAETSBITWORTAUFSCHALTUNG

VERFAHREN ZUR KODIERUNG ODER DEKODIERUNG UND VORRICHTUNG ZUM KODIEREN ODER DEKODIEREN

Vorrichtung und Verfahren zur TFCI-Kodierung in einem mobilen Kommunikationssystem

Verfahren zur Kodierung und Übertragung von Formatkombinationsindikatoren

VERFAHREN ZUR BERTRAGUNG VON DIGITALEN INFORMATIONSPAKETEN IN EINEM DATENNETZ

Verfahren und Vorrichtung für die Encodierung von Low Density Parity Check (LDPC) Codes kurzer Blocklänge

SCHALTUNGSANORDNUNG ZUM KORRIGIEREN DES SCHLUPFFEHLERS IN DATENUEBERTRAGUNGSSYSTEMEN UNTER VERWENDUNG VON ZYKLISCHEN CODES

Mobillfunkgerät

Method and apparatus for signalling in digital radio systems

Data comprising data streams, such as physical layer pipes, is transmitted in a wireless communication system. The data streams are mapped onto frames 4a â 4e and a signalling information word is generated which carries signalling assisting in the reception of the data streams for a given frame, and parity bits are derived from the signalling information word for the given frame. Each frame 4a â 4e comprises a preamble section 6 and a data section 8, the preamble section 6 and the data section 8 being time-multiplexed, the data section 8 carrying at least parts of the data streams, and the preamble section 6 carrying at least signalling information. The signalling information word is included in a preamble section of the given frame, and at least one of the parity bits is included in a preamble section of a prior frame preceding the given frame. At least part of the signalling information word for the given frame is included within the data section 8 of an earlier frame preceding said prior ...

Method of encoding data using a low density parity check code

Disturbed data storage and recovery

Transmitting and receiving data using polar codes

DIGITAL DATA TRANSMISSION SYSTEM

Digital transmission system with an error correction code across the frequency domain and transmitter and receiver for use in such system

Binary data error correction using hint signal

An error detection and correction method and apparatus is described which permits the correction of double errors using a (15, 11) Hamming code and a parity bit. The Hamming code and parity bit allows the detection of double errors. A modulated waveform carrying the binary data is examined for anomalies such as noise pulses. A hint signal is generated based on the anomalies which points to a suspect bit. The state of this bit is changed to correct for double errors. ...

High code rate block coding/decoding method and apparatus

Wireless communications apparatus

DVB-T2 OFDM interleaver with large symbol sequential write/PR read/PR write/sequential read mode and small symbol sequential write/PR read mode

In DVB-T symbols are interleaved on to OFDM sub-carriers. The existing interleavers write a first symbol to memory sequentially 132 and read it out according to a pseudo-random (PR) pattern 134. The next symbol is immediately written to these PR locations 120 and then read sequentially 126, and so on. The former operation (sequential write/PR read) produces better separation of initially adjacent symbols (Fig. 6). DVB-T2 uses OFDM transmission in 1/2/4/8/16/32k sub-carrier modes and allows switching between these modes. The invention switches interleaving schemes between the DVB-T one above and one where alternate symbols are assigned their own memory area to perform sequential write/PR read (Fig. 10), depending upon whether the number of carriers is less than half the number of memory locations. Thereby maximising symbol separation. The PR pattern is produced by feeding the output of an LFSR through a permutation matrix. The symbol/sub-carrier relationship ...

DECODING DATA

An error detection and correction system for a stream of encoded data

Improvements in ATM data transmission systems

Video surveillance system controller

A video surveillance system controller that controls multiple cameras with at least two joysticks (2, 3) and a keypad (4) to enable live queuing of the cameras. Each joystick (2, 3) independently controls a camera selected by the keypad (4). The keypad (4) can also select one of a number of monitors for displaying the view from a selected camera. The controller has a number of output ports that are configurable for different camera protocols, alarms and other external devices. Each joystick (2, 3) has at least two-axis control, for example, pan and tilt of a camera. The joystick (2, 3) may be three-axis to control pan, tilt and drive or four-axis to control pan, tilt, zoom and drive, or other control combinations.

Methods and systems for transmitting data through an aggregated connection

The present invention discloses methods and systems for transmitting data packets from a first communications router to a second communications router through an aggregated connection comprising a plurality of tunnels. The first communications router receives a first data packet belonging to a data session from a first host. The first communications router then transmits the first data packet to the second communications router and stores the first data packet in a local storage medium. The first communications router determines whether an error correction mode is activated. If an error correction mode is activated, the first communications router retransmits the first data packet and also transmits an error correction packet corresponding to the first data packet.

Multiplexing method

A method of multiplexing data from a plurality of data channels, comprises representing the data from one or more data channels as a single data unit comprising a data field prefixed with a header, the header comprising a multiplex code, a length field, a cyclic redundancy code and a parity field. Alternatively the cyclic redundancy code and parity field are replaced by a shortened Reed Solomon code. A method of multiplexing time critical data is also described which comprises determining what data is available for multiplexing to a data unit at a given time, and allocating data to a data field of the data unit appropriately, wherein during allocation of the data to the data field priority is given to time critical data by not allocating non time critical data to the data field of the data unit unless all of the available time critical data has been allocated to the data unit.

Maximum transition run (MTR) encoding where prohibited portions of block coded data are replaced with substitute portions

Methods and apparatus are provided for encoding a succession of m-bit data words to produce a succession of n-bit code words, where n > m, for supply to a magnetic recording channel. Each m-bit data word is partitioned into a plurality of blocks of bits (5a, 6a, 7a), and at least one of said blocks is encoded (5, 6, 7) in accordance with a block coding scheme such that the resulting bit sequence derived from the m bits of the data word comprises an n-bit sequence (5b, 6b, 7b). An n-bit code word is then produced by at least one stage of violation correction (8,9). The or each stage of violation correction comprises detecting the occurrence of any of a plurality of prohibited bit patterns at one or more predetermined locations in the n-bit sequence, and replacing any prohibited bit pattern so detected by a respective substitute bit pattern (8b, 9b). The block coding scheme and the prohibited and substitute bit patterns are predetermined such that, in a succession of said n-bit code words ...

Decoding coded TFCI bits for DCH and coded TFCI bits for DSCH using zero padding

The present application discloses a receiver for extracting k Transport Format Combination Indicator (TFCI) bits from 3k+1 coded TFCI bits for Dedicated Channel (DCH), and for extracting 10-k TFCI bits from 3(10-k)+1 coded TFCI bits for Downlink Shared Channel (DSCH), where k is an integer between 1 and 9 inclusive. The method involves using mask patterns associated with the value of k to zero pad the 3k+1 and 3(10-k)+1 bit streams to produce two 32-bit streams, and then decoding each of the 32-bit streams. The receiver of the present application is complementary to the transmitter of GB 2379368. In an alternative embodiment there may be 3k coded TFCI bits for DCH and 3(10-k)+2 coded TFCI bits for DSCH.

Hardened automatic synchronisation scheme for atm cells

Improvements in or relating to mobile terminal identification

Mixed-media telecommunication call set-up

Decoding low-density parity check codes

Traffic sensitive handling

Encoding/decoding apparatus and method in a CDMA mobile communication system

DIGITAL TRANSMISSION SYSTEMS

VOLTAGE DETECTOR

... 1285742 Selecting signals according to relative amplitude POST OFFICE 26 June 1969 [28 June 1968] 21265/70 Divided out of 1285741 Heading H3T The circuit shown determines on which of inputs 110, 112, 114 appears the most positive and the second most positive voltages, and supplies these voltages on outputs 134, 172. If, for example, the voltage on 112 is the highest only transistor 122 of the emitter coupled transistors 120, 122, 124 will conduct. As 122 conducts transistor 128 will be on, giving an address signal on output 138. The signal on 138 inhibits gate 144 so that only the voltages on 110, 114 pass to the second stage of the circuit, which, being identical to the first stage, therefore indicates the magnitude and address of the second most positive voltage. To determine the most negative and second most negative voltages the transistors are replaced by transistors of opposite conductivity types.

Digital sound broadcasting receiver and automatic phase controlling method therefor

Distributed data storage and recovery

Method and apparatus for receiving a transmitted data packet with accompanying parity data. Data is split into components of data (subset A, Subset B) with associated parity data P; each component and the associated parity data is split into respective subsets (AA, AB; BA, BB; PA, PB) with associated further parity data (AP, BP, PP) The subsets are received over separate transmission channels C1-C9. The receiver is then able to use the parity data to correct any transmission errors that have occurred, either by using the associated further parity data generated from the missing subset, or by using the relevant subset of the associated parity data generated from the components. The parity function may be XOR, exclusive or. There may be multi-dimensional parity eg. 2 dimensional parity or 3 dimensional parity.

Data processing apparatus and method

ERROR DATE CORRECTING SYSTEM

Polar encoder, communication unit, integrated circuit and method therefor

A polar encoder kernal (102) is described. The polar encoder kernal (102) is configured to receive one or more bits from a kernal information block (105) having a kernal block size of N; and output one or more bits from a kernal encoded block (106) having a block size that matches the kernel block size N; wherein the polar encoder kernal (102) comprises a decomposition of a polar code graph having multiple columns (702) and where each column is further decomposed into one or more polar code sub-graphs (701) and is configured to process encoded bits one polar code subgraph (701) at a time.

Cooperative broadcast multi-hop network that employs broadcast flood routing and multi-hop transmission using a direct-sequence spread-spectrum (DSSS) wavefor

PROCEDURE, SYSTEM AND NETWORK UNIT FOR DATA COMMUNICATION AND RECEIPT WITH HEADER PROTECTION

ADAPTIVE ATTITUDE OF DECISION LEVELS

CODEENTWURFSUND IMPLEMENTATION IMPROVEMENTS FOR LITTLE DENSITY PARITY VERIFICATION CODE FOR CHANNELS WITH SEVERAL ENTRANCES AND SEVERAL EXITS

Techniques To Control Power Consumption In An Iterative Decoder By Control Of Node Configurations

A method for controlling power consumption of an iterative decoder based on one or more criteria is described. The method may include progressively enabling and disabling nodes of the iterative decoder to perform iterative decoding on a demodulated signal to provide a decoded signal with minimal variation of a supply voltage.

Variable rate coding for enabling high performance communication

A protocol for optimizing the use of coded transmissions such as over wireless links. In this technique, interframes are split into segments selected to be an optimum size according to transmission characteristics of the radio channel. The inverse process is applied at the receiver. Using this scheme, segments containing erroneous data may be resent.

Modified progressive edge-growth ldpc codes for ultra-high-speed serial optical transport

Systems and methods enabling ultra-high-speed optical transport The systems and methods include receiving a modulated, encoded input stream. Channel impairments are removed using MAP equalization. Symbols are detected in the input stream to produce a stream of encoded data. The stream of encoded data is decoded with one or more low density parity check (LDPC) decoders that use an LDPC code built by modified progressive edge growth. The LDPC code is built by iteratively expanding trees from each variable node until all check nodes are connected to the respective variable node, while controlling both the local girth and the global girth of the code.

Packet-level erasure protection coding in aggregated packet transmissions

In a first aspect, an aggregated packet (A-MPDU) includes packets (MPDUs) and EC-Blocks (Error Correction Blocks) containing error correction coding information. A transmitter uses a Fountain coding scheme (for example, Raptor or RaptorQ) to generate the error correction coding information from the MPDUs. If a receiver detects an error in a received MPDU, then the receiver uses the error correction coding information from the EC-Blocks to correct the error. In a second novel aspect, a determination is made as to whether a change in error rate is more likely due to collisions or to a low SNR. If the determination is that the change is due to collisions then the MCS index is adjusted to restore a target error rate, whereas if the determination is that the change is due to a low SNR then the number of EC-Blocks per A-MPDU is adjusted to restore the target error rate.

Modulation method and device implementing a differential modulation, corresponding demodulation method and device, signal and computer software products

A method and apparatus are provided for modulating a binary source sequence including of a plurality of source words to generate modulated symbols. The method implements error-correction encoding of the plurality of source words, implementing one or more encoding modules, each implementing a separate error-correction code to generate a plurality of code words, the source words being encoded in series. The code words are interlaced to generate an interlaced sequence. The interlaced sequence is differentially modulated to generate modulated symbols. Each code word is broken down into at least one group with a number of bits equal to the base-2 logarithm of a number of states of a modulation implemented by the step of differentially modulating. The interlacing step distributes the groups such that two adjacent groups in the interlaced sequence belong to separate code words.

Reed-solomon erasure decoding with error detection for retransmission

By utilizing Reed-Solomon erasure decoding algorithms and techniques, the system is able to perform error detection for the case where the number of bytes received in error exceeds a correcting capability of a decoder. The error detection can be used, for example, to determine whether a codeword is decodable, and whether the retransmission of data is necessary. The retransmission can be accomplished by assembling a message that is sent to another modem requesting retransmission of one or more portions of data, such as one or more codewords.

Transmission device, reception device and communication system

A video image data encoder comprises an input to receive stereoscopic image data. The stereoscopic image data includes first and second image data having chronological correspondence. An error correction encoding unit combines portions of the first image data and corresponding portions of the second image data from the input unit into a common encoding matrix. An error correcting code derived from the combined portions is added to the encoding matrix.

Hybrid codec apparatus and method for data trasnferring

In a hybrid codec apparatus for data broadcasting, an encoder divides a source file into N sections, generates N principal encoded data after coding on a first finite field and k additional encoded data after coding on a second finite field, then transmits a group of coefficient encoded data and the N+k encoded data to a decoder. The decoder merges the group of coefficient encoded data and the N+k encoded data, and decodes the N principal encoded data on the first finite field. When the decoder fails to decode the N principal encoded data, the decoder uses the k additional encoded data to assist the data decoding on the second finite field. After the decoding, a recovered source file is produced.

Apparatus and method for wireless communication

In a wireless communication method, a first wireless communication apparatus transmits through a first wireless resource to a second wireless communication apparatus a first signal generated from a second signal for use in processing performed by the second wireless communication apparatus and a third signal for use in error checking of the second signal. The second wireless communication apparatus detects a second wireless resource to be used in the processing on the basis of the first signal, and performs the processing by using the second signal and the detected second wireless resource. For the detection, a section of the first signal corresponding to the second wireless resource is scrambled, or the first signal is scrambled with a scrambling sequence corresponding to the second wireless resource, or the bit order in at least part of the first signal is changed in a manner corresponding to the second wireless resource.

Method and Apparatus for Applying Forward Error Correction in 66B Systems

A method and apparatus for applying Forward Error Correction (FEC) in 66b systems. For a user data, the apparatus uses a method comprising the steps of generating one or more data blocks using a 66b code format and the user data; generating one or more FEC parity blocks using the 66b code format, wherein the parity is calculated over the data blocks; and generating an FEC codeword using the data blocks and the FEC parity blocks.

System and Method for Fault Tolerant Computing Using Generic Hardware

A dual redundant process controller is provided. The controller comprises a process control application that executes on a first and a second module. When executed by the first module, a first application instance writes a first synchronization information to the second module, reads a second synchronization information from the first module, and, when the second disagrees with the first synchronization information after passage of a time-out interval, performs a resynchronization function; and wherein, when executed by the second module, the second application instance writes the second synchronization information to the first module, reads the first synchronization information from the second module, and, when the first disagrees with the second synchronization information after passage of the time-out interval, performs the resynchronization function. The first application instance calls the synchronization function provided by the multitasking real-time operating system before invoking a set events function provided by a multitasking real-time operating system.

Method and apparatus for transmitting and receiving system information in a mobile communication system

A method and apparatus are provided for transmitting and receiving System Information (SI) in a mobile communication system. The method for receiving the SI by a User Equipment (UE) includes receiving, by the UE, at a fixedly scheduled sub-frame of a predetermined radio frame within a Primary Broadcast CHannel (P-BCH) transmission period, the SI including first partial bits of a System Frame Number (SFN), the first partial bits indicating a repeated value; and acquiring, by the UE, second partial bits of the SFN in the predetermined radio frame by decoding the P-BCH, the second partial bits indicating a different value.

Soft-decision non-binary ldpc coding for ultra-long-haul optical transoceanic transmissions

Methods and systems for soft-decision non-binary low-density parity-check (LDPC) coding for ultra-long-haul optical transoceanic transmissions are provided. A receiver includes one or more maximum a posteriori (MAP) equalizers configured to decode one or more symbols of an encoded input stream to provide one or more symbol log-likelihood ratios (LLRs). One or more LLR estimators are configured to estimate the log-likelihood ratios of the one or more symbol LLRs to provide one or more bit LLRs. One or more non-binary LDPC decoders are configured to decode the input stream using the one or more bit LLRs to recover an original input stream.

Bch decoding with multiple sigma polynomial calculation algorithms

Bose-Chaudhuri-Hocquenghem (BCH) decoder architectures which execute a plurality of different algorithms to calculate an error location polynomial. The multiple algorithms may be implemented in a storage controller for increased throughput per gate count. Codewords needing up to a threshold number of corrections may be processed via a first algorithm while those with a greater number of corrections may be processed via the second algorithm. In embodiments, the Peterson-Gorenstein-Zierler (PGZ) algorithm and the Berlekamp-Massey algorithm (BMA) are executed either serially or in parallel to increase throughput of the decoder.

Error correction method and device

Provided is an error correction method for an optical communication system that transmits a transmission frame formed of information data added with an overhead and an error correction code, the error correction method including adjusting a size of an FEC redundant area of an FEC frame for storing client signals of different signal types in accordance with the client signals so that transmission rates of the FEC frame for the respective client signals have an approximately N-multiple relationship (N is a positive natural number). With this, it is possible to obtain an error correction method and device capable of providing a high-quality and high-speed optical communication system without performance degradation caused by jitter or the like and with the common use of circuits having a reduced circuit scale.

Modulator and modulation method

A transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased. An encoding part subjects transport data to a block encoding process to form block encoded data. A modulating part modulates the block encoded data to form data symbols; and an arranging (interleaving) part arranges (interleaves) the block encoded data in such a manner that the intra-block encoded data of the encoded blocks, which include their respective single different data symbol, get together, and then supplies the arranged (interleaved) block encoded data to the modulating part. In this way, there can be provided a transmitter apparatus wherein a relatively simple structure is used to suppress burst errors without changing the block sizes of encoded blocks even when the number of modulation multi-values is increased.

Method of decoding content data blocks, corresponding computer program product and decoding device

When decoding a set of symbols to be decoded, several data blocks representative of the set of symbols to be decoded are received by a decoding node of a communications network. The data blocks are encoded using an error correction code enabling a decoding by erasure. The decoding node performs the following steps: first selecting at least one of the data blocks, first determining first erasures, and checking whether the number of the first erasures is below a given threshold. In a case the check is positive, the decoding node performs first decoding by erasure of the set of symbols to be decoded. In a case the check is negative, the decoding node performs second selecting of at least one of the data blocks, second determining second erasures, and second decoding by erasure of the set of symbols to be decoded from the second erasures.

Method of error floor mitigation in low-density parity-check codes

A digital communication decoding method for low-density parity-check coded messages. The decoding method decodes the low-density parity-check coded messages within a bipartite graph having check nodes and variable nodes. Messages from check nodes are partially hard limited, so that every message which would otherwise have a magnitude at or above a certain level is re-assigned to a maximum magnitude.

Encoding and decoding methods and apparatus for use in a wireless communication system

The claimed subject matter relates to encoding and decoding information in a wireless communication system using soft-demodulation and interleaving of concatenated code received in a strip channel. A set of symbols is received containing a plurality of information bits, dividing the received set of symbols into a plurality of subsets of symbols, each subset corresponding to the input of an inner code demodulation selecting a set of initial a priori values of the inner code demodulation for each subset of symbols, and demodulating each subset of symbols, using the initial a priori values of the subset of symbols and an inner code generator matrix, to generate a plurality of first soft information values as the output of the inner code demodulation.

System and method for achieving accelerated throughput

Systems and methods for transporting data between two endpoints over an encoded channel are disclosed. Data transmission units (data units) from the source network are received at an encoding component logically located between the endpoints. These first data units are subdivided into second data units and are transmitted to the destination network over the transport network. Also transmitted are encoded or extra second data units that allow the original first data units to be recreated even if some of the second data units are lost. These encoded second data units may be merely copies of the second data units transmitted, parity second data units, or second data units which have been encoded using erasure correcting coding. At the receiving endpoint, the second data units are received and are used to recreate the original first data units.

Apparatus and method for transmitting and receiving data in communication system

An apparatus and a method for transmitting and receiving a signal in a communication system are provided. The method includes checking a type of the signal to be transmitted; determining a number of puncture bits according to the type of the signal; and puncturing an encoded signal to be transmitted according to the number of puncture bits.

Method and apparatus for transmitting uplink control information in a wireless communication system

The present invention provides a method and apparatus for transmitting uplink control information (UCI) by user equipment in a wireless communication. The user equipment performs channel coding on information bits of the UCI to generate encoding information bits; performs modulation on the thus generated encoding information bits to generate complex modulation symbols; spreads the complex modulation symbols block-wise to a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols based on an orthogonal sequence; and transmits the spread complex modulation symbols to a base station.

Transmitter and method for transmitting data block in wireless communication system

Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: deciding the number of bits (s) and encoders (NES) to allocate to one axis of a signal constellation; encoding an information bit based on the s and the NES and generating a coded block; parsing the coded block based on the s and the NES and generating a plurality of frequency sub-blocks; and transmitting the plurality of frequency sub-blocks to a receiver.

Transmitter and method for transmitting data block in wireless communication system

Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: encoding an information bit and generating a block coded with an NCBPSS bit; generating two sub-blocks by parsing the coded block; and transmitting the two sub-blocks to the transmitter. By preventing the bits that are contiguous to the encoding block from having continuous identical reliabilities on a signal constellation, the deterioration of the decoding performance of the transmitter can be prevented.

Method for generating codewords

Provided is a method for generating codewords. The method comprises the following steps: receiving an information bit; generating a generating matrix in which a size of a column is identical with a length of the information bit, a size of a row is 24 rows, and values of symbols that are elements of the matrix are 0 or 1; modifying the generating matrix by dividing the generated generating matrix into an upper group and a lower group having an identical size and replacing rows so that the number of symbols having a value of 1 in the upper group is identical with the number of symbols having a value of 1 in the lower group; and obtaining inner products from the information bit and each row of the modified generating matrix and generating codewords from remainders obtained by dividing the inner products by 2.

Method and apparatus for transmitting control information

The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for transmitting uplink control information when TDD and a plurality of cells are configured, and comprises the following steps: receiving one or more of at least one PDCCH signal and at least one PDSCH signal; generating for each of the cells reception reply information on one or more of the at least one PDCCH signal and the at least one PDSCH signal; and transmitting the reception reply information for each of the plurality of cells which are connected.

Method and device for transmitting uplink control information in wireless communication system

Disclosed are a method and a device for transmitting uplink control information (UCI) by a terminal in a wireless communication system. The UCI transmission method comprises the steps of: generating an encoding information bit stream by performing channel coding for a UCI bit stream; generating complex modulation symbols by performing modulation for the generated encoding information bit stream; spreading the complex modulation symbols in block-wise on the basis of an orthogonal sequence; and transmitting the spread complex modulation symbols to a base station. The encoding information bit stream is generated by a channel coding for circularly repeating the UCI bit stream.

Channel coding method of variable length information using block code

A channel coding method of variable length information using block code is disclosed. A method for channel-coding information bits using a code generation matrix including 32 rows and A columns corresponding to length of the information bits includes channel-coding the information bits having “A” length using basis sequences having 32-bit length corresponding to columns of the code generation matrix, and outputting the channel-coded result as an output sequence. If “A” is higher than 10, the code generation matrix is generated when (A-10) additional basis sequences were added as column-directional sequences to a first or second matrix. The first matrix is a TFCI code generation matrix composed of 32 rows and 10 columns used for TFCI coding. The second matrix is made when at least an inter-row location or an inter-column location of the first matrix was changed. The additional basis sequences satisfy a value 10 of minimum Hamming distance.

Low Density Parity Check (LDPC) Encoded Higher Order Modulation

A method and apparatus is disclosed to map a sequence of data to Quadrature Amplitude Modulation (QAM) constellation symbols. The method and apparatus encodes only a portion of the sequence of data and leaves a remaining portion of the sequence of data unencoded. The encoded portion of the sequence of data and the remaining unencoded portion of the sequence of data are then mapped into modulation symbols of the QAM constellation. The encoded portion of the sequence of data selects subsets of the QAM constellation, and the remaining unencoded portion of the sequence of data determines a specific modulation symbol within each subset of the QAM constellation.

COFDM digital television receivers for iterative-diversity reception

Receivers with capability for iterative-diversity reception of COFDM digital television transmissions of repeated similarly coded data are described. Also described are receivers with capabilities for receiving COFDM digital television transmissions in which earlier transmissions of coded data are later followed by subsequent transmissions of the same data differently coded. The receivers use maximal-ratio code combining techniques for repeated components in the COFDM digital television transmissions. The receivers use turbo decoding techniques for concatenated coding of data in the COFDM digital television transmissions.

Digital broadcasting systems using parallel concatenated coding of bit-complementary bitstreams

A digital television (DTV) system uses parallel concatenated coding (PCC), together with QAM constellations for modulating OFDM carriers. A first encoder responds to ONEs' complemented bits of randomized data to generate a first component of PCC. A second encoder responds to delayed bits of the randomized data to generate a second component of PCC. A constellation mapper generates QAM symbols responsive to successive time-slices of the first component of the PCC interleaved with successive time-slices of the second component of the PCC. An OFDM modulator generates a COFDM modulating signal responsive to the QAM symbols. In a receiver for the DTV system, the second component of the PCC and delayed first component of the PCC are iteratively decoded. Soft bits from the second component and delayed first component of the parallel concatenated coding are code-combined to supply soft randomized data used in that iterative decoding.

Method and apparatus for multiplexing control information and data, and for transmitting the multiplexed control information and data in a mimo wireless communication system

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting uplink control information in a wireless communication system. A method for multiplexing uplink control information and uplink data and for transmitting the multiplexed uplink control information and uplink data according to one embodiment of the present invention comprises the following steps: encoding a first transmission block and a second transmission block to generate a first codeword and a second codeword; mapping the first codeword and the second codeword to one or more layers, respectively; and transmitting, via one or more antenna ports, each layer to which the first codeword and the second codeword are mapped, wherein the uplink control information is multiplexed only to either the first transmission block or to the second transmission block.

Method and apparatus for transmitting and receiving information in a broadcasting/communication system

A method and apparatus are provided for transmitting and receiving information in a broadcasting/communication system. The method includes comparing a number of bits of an information word to be transmitted with a predetermined threshold value; if the number of bits of the information word is less than the predetermined threshold value, determining a first parameter pair; if the number of bits of the information word is not less than the predetermined threshold value, determining a second parameter pair; determining a number of bits to be punctured based on one of the first parameter pair and the second parameter pair; and puncturing the determined number of bits to be punctured, with respect to parity bits of a codeword generated by encoding the information word.

Iterative detection and decoding device for selecting soft information according to at least one predetermined constraint rule, and related iterative detection and decoding method

An iterative detection and decoding device includes a signal detector, an error-correction decoder and an SI selector. The signal detector is utilized for generating a set of soft information (SI). The error-correction decoder is coupled to the signal detector, for iteratively decoding the set of SI and accordingly updating the set of SI to generate a set of updated SI. The SI selector is coupled between the signal detector and the error-correction decoder, for selecting at least one SI from the set of updated SI when each SI satisfies at least one predetermined constraint rule. The signal detector further selectively generates a new set of SI according to a selection result generated from the SI selector.

Encoding apparatus and encoding method in data communication system

An encoding method and apparatus in a data communication system are provided. The method includes inputting a source block including a plurality of source payloads, converting the source block to an information block including a plurality of information payloads according to an Information Block Generation (IBG) mode selected from a plurality of IBG modes, transmitting a delivery block generated by adding a parity block generated by encoding the information block according to a selected encoding scheme to the source block to a receiver, and transmitting information indicating the selected IBG mode to the receiver.

Acquiring a Trusted Set of Encoded Data Slices

A method begins by a dispersed storage (DS) processing module receiving a decode threshold number of encoded data slices of a set of encoded data slices. The method continues with the DS processing module determining whether to evoke a trust verification function and when the trust verification function is to be evoked, selecting one or more encoded data slices of the set of encoded data slices for trust verification to produce one or more selected encoded data slices. The method continues with the DS processing module sending, to a trusted source, a request to receive the one or more selected encoded data slices and when the one or more selected encoded data slices are received from the trusted source, determining that a trusted set of encoded data slices is available based on the decode threshold number of encoded data slices and the received one or more selected encoded data slices.

Network quality as a service

A system is provided for improving the performance of an access network for coupling user devices to an application server. The system includes a user device coupled to an intermediate server via the access network. The user device has a processor adapted to encode data using a network performance enhancing coding (NPEC), and to transmit the encoded data via the access network to the intermediate server. The intermediate server is adapted to receive the encoded data and has a processor adapted to decode the encoded data using the NPEC, and to transmit the decoded data to the application server.

Virtualized optical transport network systems and methods

The present disclosure provides an optical transceiver, method of mapping, and method of management utilizing a plurality of Optical Channel Transport Unit layer k (OTUk) links to form an aggregate signal, such as, for example, 10 OTU2s to provide a single 100 Gigabit Ethernet (100 GbE) signal. Specifically, the present invention enables use of existing circuitry and methods at lower speed signals, e.g. 10 G, to support higher speed aggregate signals, e.g. 100 G. The present invention may be utilized to support carrier-grade OTN applications with optical transceivers such as, for example, pluggable optical transceivers. In an exemplary embodiment, the present invention includes a method which receives a plurality of signals, frames each of the plurality of signals into an OTUk frame, and manages/monitors each of the plurality of signals in an OTUk frame in the aggregate.

Wireless Transmission Reliability

A method for performing error correction during a transmission of physiological data includes two or more data packets that are sent from a first electronic computing device to a second electronic computing device. Each of the data packets includes physiological data. Each of the data packets has a first packet size. Each of the data packets includes error correction information. The error correction information for each of the two or more packets is distributed across the two or more data packets.

System for Communicating Data in xDSL Using Data Retransmission

Embodiments described herein provide an apparatus for transmitting data in an xDSL. In one example, the apparatus can include a transmitter configured to transmit data over the xDSL system in the form of data transmission units (DTUs), the transmitter having a physical media specific-transmission convergence (PMS-TC) communication sublayer and a retransmission unit that is implemented in the PMS-TC sublayer, the retransmission unit including a retransmission buffer configured to store transmitted DTUs and to index the transmitted DTUs using retransmit containers, each retransmit container being defined as a time slot corresponding to a respective sent DTU. A retransmit request specifies a DTU by a corresponding retransmit container and wherein the retransmission unit is configured to retransmit the specified DTU in response to the retransmit request.

Special Subframe Configuration in Wireless Networks

A base station configures a first set of subframes on a first carrier as special subframes. The base station transmits at least one unicast control message to a wireless device. The at least one unicast control message configures a second carrier. The base station configures the second carrier to enter a special subframe for every subframe in which the first carrier enters a special subframe, and the second carrier is activated.

Almost Blank Subframe Indication in Wireless Networks

A base station transmits a first unicast control message configuring transmission parameters of a first carrier for a wireless device. The base station transmits at least one second unicast message configuring measurement parameters of a second carrier. The measurement configuration comprises a first and a second measurement subframe allocation bitmap for the second carrier. The base station receives first and second channel state information from the wireless device. The base station transmits data packets to the wireless device. The data packets are encoded and modulated based on the first and second channel state information.

Systems, methods, apparatus and computer program products for highly reliable file delivery using compound and braided fec encoding and decoding

Systems, methods, apparatus and computer program products provide highly reliable file delivery using a combination of packet-level FEC on source data packets which are arranged in matrices, where encoding is performed on both rows and columns or on rows, columns and diagonals.

System and Method Including Modified Bit-Interleaved Coded Modulation

A system and method with a modified bit-interleaved coded modulation with iterative decoding (BICM-ID). Coded and interleaved bits are combined and coded with a second FEC code that is then mapped to a modulation format. The second FEC code may be a single parity check (SPC) and the scheme may be referred to as a SPC-BICM-ID scheme.

Efficient control signaling over shared communication channels with wide dynamic range

Embodiments provide methods, apparatuses, and systems for efficient control signaling over shared communication channels with wide dynamic range. Some embodiments includes a gateway configured to encode and to transmit multiple physical layer headers, including a first physical layer header and a second physical layer header. The first physical layer header may span a first length and represent a first modcode; the second physical layer header may span a second length and represent a second modcode. The second length may be longer than the first length. Embodiments may include multiple terminals in wireless communication with the gateway via satellite, including a first terminal configured to decode the first physical layer header and to determine the first modcode. Embodiments may include a second terminal configured to decode the second physical layer header and determine the second modcode.

Discrete multi-tone systems for half-duplex ip links

A DMT system for a half-duplex two-way link carries Internet protocol encoded video stream on a coaxial cable that also carries a baseband rendition of the same video stream. A plurality of downlink symbols modulated on a subband of subcarriers in a downlink signal are decoded. The symbols may carry data encoded on a subband using a constellation of QAM symbols assigned to the subband. Other subbands may be associated with different QAM constellations. Lower-order constellations of QAM symbols may be assigned to subbands that include higher-frequency subcarriers and higher-order constellations of QAM symbols may be assigned to subbands that include lower-frequency subcarriers. A block error correction decoder may be synchronized based on an identification of the first constellation of QAM symbols and information identifying boundaries between the plurality of downlink symbols.

Apparatuses and methods for combining error coding and modulation schemes

Methods and apparatuses for combining error coding and modulation schemes are described herein. One or more methods include encoding data using linear error correcting code, modulating the encoded data, writing the modulated data to memory, and decoding the written data using a Viterbi algorithm and a linear error correcting code decoder.

Time-interleaved simulcast for tune-in reduction

A method includes generating a first coded data stream and a second coded data stream both representing the same content, the first coded data stream and the second coded data stream being independently decodable from each other, transmitting portions of the first coded data stream in first and second time-sliced bursts, and transmitting a portion of the second coded data stream in a third time-sliced burst, where the transmission of the portions of the first and second coded data streams do not overlap with each other, and occur subsequently to each other in transmission order and substantially without delay between transmission of data.

Data processing device and data processing method

A data processing device and a data processing method that can readily process control data having its PAPR improved. In a transmission device, a padder pads control data necessary for demodulation with zeros as dummy data, and a scrambler scrambles the padded control data (post-padding control data). A replacement unit replaces scrambled dummy data in the scrambled post-padding control data with the dummy data, and a BCH encoder and an LDPC encoder perform BCH encoding and LDPC encoding as error correction encoding on the replacement data obtained through the replacement. A shortening unit performs shortening by deleting the dummy data contained in the LDPC code and puncturing the parity bits of the LDPC code. The device can be applied in cases where control data is subjected to error correction encoding and is then transmitted, for example.

Systems and Methods for Variable Rate Coding in a Data Processing System

The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for variable rate coding in a data processing system.

UNIVERSAL OBJECT DELIVERY AND TEMPLATE-BASED FILE DELIVERY

Data objects can be delivered over a network using a file delivery system and universal object delivery and template-based file delivery. This might be done by forming source data into a sequence of data objects represented by symbols in packets, sending those to receivers on request, wherein a transmitter obtains a template file delivery table with delivery metadata for the data objects, and constructing a first transmission object identifier for a data object based on a transmission object identifier construction rule described in the template file delivery table. A receiver might receive packets, extract a second transmission object identifier, associate encoded symbols comprising the received data packet with the data object if the first transmission object identifier and the second transmission object identifier identify the same data object, and recover, at least approximately, the source data for the data object based on the encoded symbols associated with the data object. 1. A method of delivering one or more data objects from an electronic device or system over a packet-switched network , wherein source data of the one or more data objects is represented by encoded symbols in packets such that the source data is recoverable , at least approximately , from the encoded symbols , the method comprising:a) generating data in a structured form, including meta-data; andb) generating meta-data using templates for delivering sequences of related objects.2. A method of delivering one or more data objects from an electronic device or system over a packet-switched network , wherein source data of the one or more data objects is represented by encoded symbols in packets such that the source data is recoverable , at least approximately , from the encoded symbols , the method comprising:a) generating data in a structured form, including meta-data; andb) generating meta-data using multiplexed object transport encoding.3. A method of delivering a sequence of data objects ...

Iterative forward error correction (fec) on segmented words using a soft-metric arithmetic scheme

A system is to receive a word on which to perform error correction; obtain segments, from the word, each segment including a respective subset of samples; update, on a per segment basis, the word based on extrinsic information associated with a previous word; identify sets of least reliable positions (LRPs) associated with the segments; create a subset of LRPs based on a subset of samples within the sets of LRPs; generate candidate words based on the subset of LRPs; identify errors within the word or the candidate words; update, using the extrinsic information, a segment of the word that includes an error; determine distances between the candidate words and the updated word that includes the updated segment; identify best words associated with shortest distances; and perform error correction, on a next word, using other extrinsic information that is based on the best words.

Coding schemes for wireless communication transmissions

Systems and methodologies are described that facilitate transmitting low-density parity-check encoded communications in a wireless communications network and incrementing such codes in response to requests from receiving devices. The LDPC codes can have associated constraints allowing the codes to be error corrected upon receipt. The requests for incremented codes can be in cases of low transmission power or high interference, for example, where the original code can be too error-ridden to properly decode. In this case, additional nodes can be added to current and/or subsequent communications to facilitate adding a more complex constraint to the LDPC code. In this regard, the large codes can require less validly transmitted nodes to predict error-ridden values as the additional constraint renders less ambiguity in possible node value choices.

Method and apparatus for transmitting and receiving packet in a communication system

A method for transmitting a packet in a communication system is provided. The method includes dividing a data stream into data payloads of a predetermined size and adding a common header to each of the data payloads, to generate a source payload, adding a first Forward Error Correction (FEC) payload Identifier (ID) to the source payload and applying an FEC code thereto, to generate an FEC source packet for a source payload, adding a second FEC payload ID to at least one parity payload and applying an FEC code thereto, to generate an FEC parity packet for the at least one parity payload, and transmitting the FEC source packet and the FEC parity packet.

FEC (forward error correction) decoder with dynamic parameters

FEC (Forward Error Correction) decoder with dynamic parameters. A novel means by which FEC parameters may be encoded into, and subsequently extracted from, a signal stream to allow for adaptive changing of any 1 or more operational parameters that govern communications across a communication channel. FEC parameters are encoded directly into a data frame such that the data frame is treated identical to all other data frames within the signal stream. When the data frame actually includes FEC parameters, it is characterized as a CP (Control Packet) type. For example, when decoding an MPEG stream, an MPEG block that includes FEC parameters, that MPEG block is characterized as a CP MPEG block. The means by which FEC parameters are encoded and extracted from the signal stream allows for much easier adaptive modification of the manner by which signal are encoded, modulated, and processed within a communication system. 1. A communication device comprising:a demodulator configured to process a signal to generate a plurality of blocks; anda decoder configured to decode a first block of the plurality of blocks using at least one decoding parameter extracted from a second block of the plurality of blocks that precedes the first block of the plurality of blocks.2. The communication device of claim 1 , wherein the plurality of blocks includes a plurality of control packets interspersed among and a plurality of forward error correction (FEC) blocks;the first block of the plurality of blocks is one of the plurality of control packets; andthe second block of the plurality of blocks is one of the plurality of FEC blocks.3. The communication device of claim 1 , wherein the plurality of blocks is arranged in a sequence;the first block of the plurality of blocks is located temporally before the second block of the plurality of blocks within the sequence; andthe first block of the plurality of blocks is not temporally adjacent to the second block of the plurality of blocks within the ...

Systems and methods for non-binary ldpc encoding

The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for data encoding.

Applying Forward Error Correction in 66B Systems

A method and apparatus for applying Forward Error Correction (FEC) in 66b systems. For a user data, the apparatus uses a method comprising the steps of generating one or more data blocks using a 66b code format and the user data; generating one or more FEC parity blocks using the 66b code format, wherein the parity is calculated over the data blocks; and generating an FEC codeword using the data blocks and the FEC parity blocks.

Correction Data

A method for processing encoded data bits transmitted from a transmitter to a receiver over a lossy communication channel, the method comprising: receiving the encoded data bits over the communication channel, the encoded data bits including redundant data units; decoding the encoded data bits at an error correction decoder, wherein the recovery of lost data is implemented at the error correction decoder using at least one of the redundant data units; determining if at least one data bit is unable to be recovered due to the decoder finding a plurality of candidate bit values for the at least one data bit; receiving information relating to the transmitter; analyzing the plurality of candidate bit values to exclude at least one of the candidate bit values for the at least one data bit using information relating to the transmitter; and resolving the at least one data bit based on the analysis.

EXTERNAL SETTINGS THAT RECONFIGURE THE ERROR HANDLING BEHAVIOR OF A DISTRIBUTED PCIE SWITCH

Method for performing an operation to maintain data integrity in a parallel computing system, the operation comprising providing a lookup table specifying a plurality of predefined destinations for data packets, receiving a first data packet comprising a destination address specifying a first destination, wherein the first data packet has an error of a first type, identifying, from the lookup table, an entry specifying a second destination for data packets having errors of the first type, and sending the first data packet to the second destination to avoid corrupting the first destination. 1. A method to maintain data integrity in a computing system , comprising:providing a lookup table specifying a plurality of predefined destinations for data packets;receiving a first data packet comprising a destination address corresponding to a first destination, wherein the first data packet has an error of a first type;identifying, based on the first error type, an entry in the lookup table specifying a different, second destination for data packets having errors of the first type; andsending the first data packet to the second destination by operation of one or more computer processors to avoid corrupting the first destination.2. The method of claim 1 , further comprising not sending the first data packet to the first destination claim 1 , wherein indentifying the entry in the lookup table further comprises: generating a error code based on the first error type; and identifying the second destination based on the error code.3. The method of claim 2 , further comprising:prior to sending the first data packet to the second destination, upon determining that the second destination is not defined, defining the second destination for the first error type;receiving a second data packet comprising a destination address specifying a second destination, wherein the second data packet has an error of the first type; andsending the second data packet to the second destination.4. The ...

Forward error correction for an optical transport system

An optical transport system that transmits data using relatively short FEC-encoded data frames. The corresponding modulated optical signals are decoded at an optical receiver using frame-based maximum likelihood sequence estimation that relies on data redundancy present in each FEC-encoded data frame for the determination of its source bits. In some embodiments, the modulated optical signals carrying the FEC-encoded data frames are generated using a polarization-division-multiplexed constellation. The FEC-coding rate and frame length can be adjusted without changing the constellation, which advantageously enables the optical transport system to dynamically adapt its transmission format to the changing link conditions in a manner that results in better overall receiver sensitivity than that achieved with comparable bit-rate-adaptation methods that rely on a constellation change rather than on a change of the FEC-coding rate.

ERROR CORRECTING DECODING APPARATUS FOR DECODING LOW-DENSITY PARITY-CHECK CODES

A decoder applies decode processing to N input data in parallel to generate K decode data. An S/P converter outputs N input data applied in series to decoder through first lines L-L dividedly over several times. A P/S converter receives through second lines R-R the K decode data from decoder dividedly over several times to output in series the K decoded data to an external source. 1. An error correcting decoding apparatus for performing decoding in units of code length N , comprising:a decoder applying decode processing to N input data in parallel,a serial-parallel conversion circuit providing N input data applied in series to said decoder dividedly over several times, andB1 (B1 is a natural number of at least 2 and less than N) first lines connecting said serial-parallel conversion circuit with said decoder, one input data being transmitted through each first line.2. The error correcting decoding apparatus according to claim 1 , whereinsaid serial-parallel conversion circuit includes a first storage unit for storing said N input data,said first storage unit outputs the stored N input data to said decoder dividedly over several times through said first lines.3. The error correcting decoding apparatus according to claim 2 , whereinsaid first storage unit includes B1 dual port memories, each having 1 input and 1 output,said serial-parallel conversion circuit further includes a switch for switching between any of said B1 dual port memories into which N input data applied in series are to be stored,said B1 dual port memories and said B1 first lines are connected in a one-to-one correspondence.4. The error correcting decoding apparatus according to claim 2 , whereinsaid first storage unit includes B1 dual port memories, each having 1 input and 1 output,each dual port memory stores in duplication N input data applied in series,said B1 dual port memories and said B1 first lines are connected in a one-to-one correspondence, andeach dual port memory outputs data among the N ...

LOW-POWER TRANSMISSION SYSTEM

An efficient method and transceiver architecture combines elements to enable and facilitate the low power operation of a communications device; the combination of design elements, features, and functionalities are efficiently distributed among RF, APE, and baseband modules in order to exploit opportunities that can serve the goal of low or ultra low power consumption. 1. A decoder module configured to perform the steps of:obtaining a packet comprising a plurality of codewords;determining if a first codeword of the packet contains a detectable correctable error;not decoding subsequent codewords from the packet if the first codeword contains an uncorrectable error; anddecoding the first codeword and determining if a next codeword of the packet contains an correctable error if the first codeword does not contain a detectable uncorrectable error.2. The decoder module of claim 1 , wherein the codewords of the packet are from a predetermined algebraic forward error correction (FEC) code claim 1 , and wherein the step of determining if a first codeword of the packet contains a detectable uncorrectable error comprises;determining an error locator polynomial for the first codeword;determining the roots of the error locator polynomial;determining that the first codeword contains a detectable uncorrectable error if the number of determined roots of the error locator polynomial is less than the degree of the error locator polynomial.3. The decoder module of claim 2 , wherein the step of determining the roots of the error locator polynomial is performed using a Chien search.4. A method claim 2 , comprising:obtaining a packet comprising a plurality of codewords;determining if a first codeword of the packet contains a detectable uncorrectable error;not decoding subsequent codewords from the packet if the first codeword contains an uncorrectable error; anddecoding the first codeword and determining if a next codeword of the packet contains an uncorrectable error if the first ...

Apparatus and Method for Processing a Physical Layer Convergence Protocol Header

Apparatus and method for processing a physical layer protocol convergence (PLCP) header. In one embodiment, a wireless device includes a PLCP header processor. The PLCP header processor is configured to: process a physical layer header, process a check value based on the physical layer header, and process an error correction code based on the physical layer header and the check value. A concatenation of the physical layer header, check value, and error correction code the PLCP header processor is configured to process consists of a number of information bits that is an integer multiple of a number of information bits per symbol used to encode the PLCP header.

Resource sharing in a telecommunications environment

A transceiver is designed to share memory and processing power amongst a plurality of transmitter and/or receiver latency paths, in a communications transceiver that carries or supports multiple applications. For example, the transmitter and/or receiver latency paths of the transceiver can share an interleaver/deinterleaver memory. This allocation can be done based on the data rate, latency, BER, impulse noise protection requirements of the application, data or information being transported over each latency path, or in general any parameter associated with the communications system.

METHOD AND APPARATUS FOR DECODING RECEIVED PACKETS IN BROADCASTING AND COMMUNICATION SYSTEM

A method and apparatus for decoding received packets in a broadcasting and communication system is provided. The method includes reconstructing a source block by arranging source packets received from a sender on a two-dimensional array having a width of a given symbol size, and determining at least one Erased Subdivided Encoding Symbol Index (E-SESI) corresponding to at least one source packet which is not successfully received in the reconstructed source block, determining a symbol unit for Forward Error Correction (FEC) decoding based on the at least one E-SESI, and performing FEC decoding on the reconstructed source block depending on the determined symbol unit. 1. A method for decoding received packets in a broadcasting and communication system , the method comprising:reconstructing a source block by arranging source packets received from a sender on a two-dimensional array having a width of a given symbol size;determining at least one Erased Subdivided Encoding Symbol Index (E-SESI) corresponding to at least one source packet which is not successfully received in the reconstructed source block;determining a symbol unit for Forward Error Correction (FEC) decoding based on the at least one E-SESI; andperforming FEC decoding on the reconstructed source block depending on the determined symbol unit.2. The method of claim 1 , wherein the determining of the symbol unit for FEC decoding comprises:determining the number of erased symbol units for each of a plurality of symbol units for FEC decoding in the source block based on the at least one E-SESI; andselecting at least one of the plurality of symbol units as the symbol unit depending on the number of erased symbol units.3. The method of claim 2 , wherein the plurality of symbol units include at least one of:an encoding symbol unit corresponding to each row of the reconstructed source block;a subdivided encoding symbol unit obtained by dividing each of the encoding symbols by m; anda partial encoding symbol unit ...

Method and apparatus for transmitting uplink control information in a wireless communication system

The present invention provides a method and apparatus for transmitting uplink control information (UCI) by user equipment in a wireless communication. The user equipment performs channel coding on information bits of the UCI to generate encoding information bits; performs modulation on the thus generated encoding information bits to generate complex modulation symbols; spreads the complex modulation symbols block-wise to a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols based on an orthogonal sequence; and transmits the spread complex modulation symbols to a base station.

APPARATUS FOR TRANSMITTING BROADCAST SIGNALS, APPARATUS FOR RECEIVING BROADCAST SIGNALS, METHOD FOR TRANSMITTING BROADCAST SIGNALS AND METHOD FOR RECEIVING BROADCAST SIGNALS

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding DP (Data Pipe) data corresponding to each of a plurality of DPs, a mapper for mapping the encoded DP data onto constellations, a time interleaver for time interleaving the mapped DP data at DP level, a frame builder for building at least one signal frame including the time interleaved DP data, a modulator for modulating data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals having the modulated data. 1. A method for transmitting broadcast signals , the method comprising:encoding DP (Data Pipe) data corresponding to each of a plurality of DPs, wherein the each of a plurality of DPs carries at least one service component;mapping the encoded DP data onto constellations;time interleaving the mapped DP data at DP level by performing a column-wise writing operation by writing FEC blocks of the mapped DP data into a first column to a last column of a TI memory and performing a diagonal-wise reading operation by reading out cells of the written FEC blocks from the first row to the last row of the TI memory according to a diagonal-wise reading pattern;building at least one signal frame including the time interleaved DP data;modulating data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme; andtransmitting the broadcast signals having the modulated data.2. The method of claim 1 , wherein the method further includes:frequency interleaving data in the built at least one signal frame.3. The method of claim 1 , wherein the diagonal-wise reading pattern is defined based on a maximum number of FEC blocks of the DP data within one signal frame.4. The method of claim 1 , wherein the diagonal-wise reading pattern is changed by a duration of a super-frame including the ...

HIGH SPEED INTERCONNECT SYMBOL STREAM FORWARD ERROR-CORRECTION

Disclosed herein are techniques to provide forward error correction for a high-speed interconnect symbol stream, such as, DisplayPort. The symbol stream may be split into FEC blocks and parity bits generated for each of the FEC blocks. The parity bits may be interleaved, encoded, and transmitted over an interconnect along with the symbol stream to provide forward error correction for the symbol stream. 1. An apparatus , comprising:a processor circuit; and receive a high-speed interconnect symbol stream having a plurality of symbols;', 'determine FEC parity bits based in part on the plurality of symbols of the symbol stream;', 'generate a FEC correctable symbol stream based on the plurality of symbols and the FEC parity bits., 'a forward-error correction (FEC) component executable by the processor circuit, the FEC component to2. The apparatus of claim 1 , wherein the high-speed interconnect is a DisplayPort interconnect and the symbols of the symbol stream comprise 8b10b encoded line link (LL) symbols.3. The apparatus of claim 2 , the FEC component to:generate a first FEC block and a second FEC block from the plurality of symbols of the symbol stream, the first FEC block comprising a first subset of the plurality of symbols and the second FEC block comprising a second subset, different than the first subset, of the plurality of symbols; anddetermine the FEC parity bits based in part on the FEC blocks.4. The apparatus of claim 3 , the FEC component to:determine a first number of parity symbols based in part on the symbols of the first FEC block and to determine a second number of symbols based in part on the symbols of the second FEC block; anddetermine the FEC parity bits based in part on the first number of parity symbols and the second number of parity symbols.5. The apparatus of claim 4 , the FEC component to encode the first number of parity symbols and the second number of parity symbols to determine the FEC parity bits.6. The apparatus of claim 5 , the FEC ...

Method for electrical energy meter correction in customer-distribution grid

A device, method, and computer-readable medium for correcting at least one error in readings of electricity meters, the method including receiving first readings of regular meters measuring electric energy delivered in each of a group of cables fed from a same distribution node in an electric grid during a period of time, receiving second readings of check meters measuring electric energy delivered in each of combinations of cables in the group of cables during the period of time, the combinations of cables being formed based on a redundant matrix in a generator matrix of a linear systematic block code, and correcting, in response to determining that at least one error been detected, the at least one error in the first readings of the regular meters and the second readings of the check meters.

APPARATUS AND METHOD FOR SENDING AND RECEIVING BROADCAST SIGNALS

An apparatus for transmitting a broadcast signal includes an input formatting module configured to de-multiplex an input stream into at least one Data Pipe (DP); a BICM module configured to perform error correction processing on data of the at least one DP; a signal frame building module configured to map the data of the DP to symbols within a signal frame; and an OFDM generation module configured to generate a transmission broadcast signal by inserting a preamble into the signal frame and performing OFDM modulation. The OFDM generation module includes a pilot signal insertion module configured to insert a pilot signal including Continual Pilots (CP) and Scattered Pilots (SP) into the transmission broadcast signal, and the CPs are inserted into every symbol of the signal frame, and location and number of the CPs are determined based on a Fast Fourier Transform (FFT) size. 132-. (canceled)33. An apparatus for receiving a broadcast signal , comprising:a tuner configured to receive a broadcast signal;a pilot detector configured to detect pilots in the broadcast signal;a synchronization module configured to perform synchronization on the broadcast signal by using the pilots;a frame parsing module configured to parse a signal frame of the received broadcast signal;a de-mapping and decoding module configured to convert data of a data pipe(DP) in the signal frame into a bit domain and de-interleave the data of the DP; andan output processing module configured to output a data stream,wherein the pilots comprise Continual Pilots(CPs), Scattered Pilots(SPs) and edge pilots andwherein a first CP set for 32K Fast Fourier Transform(FFT) mode is configured by adding a second CP set to a third CP set and the second CP set is obtained by subtracting carrier indices of the third CP set from a reference value.34. The apparatus of claim 33 , wherein the subtracting carrier indices of the third CP set from a reference value means an operation of reversing and shifting of the third CP ...

METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING BROADCAST SIGNAL INCLUDING ROBUST HEADER COMPRESSION PACKET STREAM

A method and apparatus for transmitting and receiving a broadcast signal including a robust header compression (RoHC) packet stream are disclosed. The broadcast signal transmitting method includes compressing a header of an IP packet included in an IP packet stream to generate an RoHC packet stream, extracting a first part of an RoHC packet included in the generated RoHC packet stream, converting a second part of the RoHC packet into another type of an RoHC packet, reconfiguring a new packet stream including the converted another type of the RoHC packet, transporting the reconfigured packet stream through a first channel, and transporting the extracted first part through a second channel. 118-. (canceled)19. A broadcast signal transmitting method comprising:compressing a header of an IP packet included in an IP packet stream to generate an RoHC packet stream,wherein the RoHC packet stream includes IR packets, IR-DYN packets and compressed packets,wherein each of the IR packets includes a first part and a second part, and each of the IR-DYN packets includes the third part;converting each of the IR packets to an IR-DYN packet by extracting the first part from each of the IR packets;reconfiguring a packet stream including the converted IR-DYN packet replacing the each of the IR packets;transmitting the reconfigured packet stream through a first channel; andtransmitting signaling information including the extracted first part through a second channel which is separate with the first channel.20. The method of claim 19 , further comprising:converting each of the IR packets to a compressed packet by further extracting the second part from each of the IR packets and converting each of the IR-DYN packets to a compressed packet by extracting the third part from each of the IR-DYN packets,wherein the reconfigured packet stream includes the converted compressed packet replacing the each of the IR packets or IR-DYN packets, andwherein the signaling information includes the ...

LOW DENSITY PARITY CHECK ENCODER HAVING LENGTH OF 64800 AND CODE RATE OF 4/15, AND LOW DENSITY PARITY CHECK ENCODING METHOD USING THE SAME

A low density parity check (LDPC) encoder, an LDPC decoder, and an LDPC encoding method are disclosed. The LDPC encoder includes first memory, second memory, and a processor. The first memory stores an LDPC codeword having a length of 64800 and a code rate of 4/15. The second memory is initialized to 0. The processor generates the LDPC codeword corresponding to information bits by performing accumulation with respect to the second memory using a sequence corresponding to a parity check matrix (PCM). 2. The LDPC encoding method of claim 1 , wherein the LDPC codeword comprises a systematic part corresponding to the information bits and having a length of 17280 claim 1 , a first parity part corresponding to a dual diagonal matrix included in the PCM and having a length of 1800 claim 1 , and a second parity part corresponding to an identity matrix included in the PCM and having a length of 45720.3. The LDPC encoding method of claim 2 , wherein the sequence has a number of rows equal to a sum of a value obtained by dividing a length of the systematic part claim 2 , that is claim 2 , 17280 claim 2 , by a circulant permutation matrix (CPM) size corresponding to the PCM claim 2 , that is claim 2 , 360 claim 2 , and a value obtained by dividing a length of the first parity part claim 2 , that is claim 2 , 1800 claim 2 , by the CPM size.4. The LDPC encoding method of claim 3 , wherein the accumulation is performed at parity bit addresses that are updated using the sequence.5. The LDPC encoding method of claim 4 , wherein the accumulation is performed while the rows of the sequence are being repeatedly changed by the CPM size of the PCM. This application is a continuation of U.S. patent application Ser. No. 14/496,654, filed on Sep. 25, 2014, which claims the benefit of Korean Patent Application Nos. 10-2014-0106180 and 10-2014-0120014, filed Aug. 14, 2014 and Sep. 11, 2014, respectively, which are hereby incorporated by reference herein in their entirety.The present ...

DEVICE, SYSTEM AND METHOD FOR EFFICIENT COSET DECODER BY TRANSFORM

A device, system and method for decoding. A noisy version of an error correction codeword may be received, for example, over a noisy communication channel or retrieved from a memory device (e.g. a flash memory device). One or more symbol probabilities may be transformed, from an initial domain to a transformed domain, the symbol probabilities being one or more individual symbols of the received error correction codeword were transmitted as one or more symbols in candidate transmitted error correction codewords. In the transformed domain, a plurality of the transformed symbol probabilities may be composed to generate a combined coset probability defining the likelihood that the transmitted error correction codeword is associated with the individual symbols belongs to a particular one of a plurality of candidate cosets. A plurality of the coset probabilities for the plurality of respective cosets may be inverse transformed from the transformed domain to the initial domain. 1. A method for decoding , the method comprising:receiving a noisy version of an error correction codeword;transforming, from an initial domain to a transformed domain, one or more symbol probabilities that one or more individual symbols of the received error correction codeword were transmitted as one or more symbols in candidate transmitted error correction codewords;in the transformed domain, composing a plurality of the transformed symbol probabilities to generate a combined coset probability defining the likelihood that the transmitted error correction codeword is associated with the individual symbols belongs to a particular one of a plurality of candidate cosets, wherein the plurality of candidate cosets are mutually exclusive subsets of a codebook defining all possible values of the error correction codeword; andinverse transforming, from the transformed domain to the initial domain, a plurality of the coset probabilities for the plurality of respective cosets.2. The method of comprising ...

COMPRESSED ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYMBOLS IN A WIRELESS COMMUNICATION SYSTEM

A boundary within a last orthogonal frequency division multiplexing (OFDM) symbol of a PHY data unit is determined. Pre-encoder padding bits are added to a set of information bits to generate a set of padded information bits such that the set of padded information bits, after being encoded, fill one or more OFDM symbols up to the boundary within the last OFDM symbol. The set of padded information bits are encoded to generate a set of coded bits. A PHY preamble is generated to include a subfield that indicates the boundary. The one or more OFDM symbols are generated to include (i) the set of coded information bits in the one or more OFDM symbols up to the boundary to allow a receiving device to stop decoding the one or more OFDM symbols at the boundary, and (ii) post-encoder padding bits in the last OFDM symbol following the boundary. 1. A method for generating a physical layer (PHY) data unit for transmission via a communication channel , the method comprising:receiving, at a communication device, a set of information bits to be included in a data portion of the PHY data unit;determining, at the communication device, a boundary within a last orthogonal frequency division multiplexing (OFDM) symbol, the last OFDM symbol among one or more OFDM symbols of the data portion of the PHY data unit;adding, at the communication device, a number of pre-encoder padding bits to the set of information bits to generate a set of padded information bits, wherein the number of pre-encoder padding bits is determined such that the set of padded information bits, after being encoded, fill the one or more OFDM symbols up to the boundary within the last OFDM symbol;encoding, at the communication device, the set of padded information bits to generate a set of coded bits;generating, at the communication device, a PHY preamble to include a subfield that indicates the boundary;generating, at the communication device, the one or more OFDM symbols to include (i) the set of coded information ...

FORWARD ERROR CORRECTION MECHANISM FOR PERIPHERAL COMPONENT INTERCONNECT-EXPRESS (PCI-E)

Aspects of the embodiments are directed to systems, methods, and devices that can activate forward error correction (FEC) based on the channel loss of a channel. The channel's loss can be characterized as a high loss channel if the channel loss exceeds a predetermined threshold value. For channels with high loss and for those that operate at high data rates (e.g., data rates commensurate with PCIe Gen 4 or Gen 5), FEC can be activated so that the channels can achieve higher data rates. 1. An apparatus comprising: change a first data rate of 64 gigatransfers per second (GT/s) to a second data rate, the second data rate lower than 64 GT/s;', 'determine error correcting code (ECC) for the data block;', 'transmit the data block with the ECC at the second data rate below 64 GT/s; and', 'transmit a skip ordered set (SKP OS) across the link without ECC., 'a downstream port to transmit data blocks across a link, the downstream port comprising circuitry to2. The apparatus of claim 1 , wherein the SKP OS is a first SKP OS claim 1 , and the protocol stack is to transmit a redundant SKP OS after the first SKP OS.3. The apparatus of claim 1 , wherein the ECC is determined for the data block without including the SKP OS.4. The apparatus of claim 1 , wherein the second data rate comprises one of 32 claim 1 , 16 claim 1 , or 8 GT/s.5. The apparatus of claim 1 , wherein the ECC is transmitted with the data blocks at predetermined intervals.6. The apparatus of claim 1 , wherein the circuitry is to:determine the second data rate;causing the link to enter into a recovery state;changing to the data rate; andtransmit data blocks at the data rate.7. A method comprising:determining that a data rate for transmitting data blocks across a link is to change from 64 gigatransfers per second (GT/s) to a data rate below 64 GT/s;activating forward error correction for the data blocks;transmitting the data blocks with forward error correction at the data rate below 64 GT/s; andtransmitting skip ...

MOBILE COMMUNICATION SYSTEM USING SUBCODING TECHNIQUES

The disclosure relates to a mobile communication system including: a first transmission path configured to transmit a message according to a first radio access technology; a second transmission path configured to transmit the message according to a second radio access technology; and an encoder configured to encode the message by a code before transmission of the message over the first transmission path and the second transmission path, wherein the code comprises at least two subcodes, and wherein the encoder is configured to encode the message intended for transmission over the first transmission path with a first subcode of the at least two subcodes and to encode the message intended for transmission over the second transmission path with a second subcode of the at least two subcodes. 125.-. (canceled)26. A mobile communication system , comprising:a first transmission path configured to transmit a message according to a first radio access technology;a second transmission path configured to transmit the message according to a second radio access technology; andan encoder configured to encode the message via a code block before transmission of the message over the first transmission path and the second transmission path,wherein the code block comprises at least a first code block portion and a second code block portion, andwherein the encoder is configured to encode the message intended for transmission over the first transmission path with the first code block portion, and to encode the message intended for transmission over the second transmission path with the second code block portion.27. The mobile communication system of claim 26 , wherein a channel code of the first radio access technology is a Low Density Parity Check (LDPC) code.28. The mobile communication system of claim 26 , wherein at least one of the first radio access technology or the second radio access technology is a millimeter wave radio access technology.29. The mobile communication system of ...

PACKET RETRANSMISSION

Through the identification of different packet-types, packets can be handled based on an assigned packet handling identifier. This identifier can, for example, enable forwarding of latency-sensitive packets without delay and allow error-sensitive packets to be stored for possible retransmission. In another embodiment, and optionally in conjunction with retransmission protocols including a packet handling identifier, a memory used for retransmission of packets can be shared with other transceiver functionality such as, coding, decoding, interleaving, deinterleaving, error correction, and the like. 1105.-. (canceled)106. A method of packet retransmission comprising:transmitting or receiving, using a transceiver, a plurality of packets,wherein at least one first packet of the plurality of packets is associated with a first delay requirement,wherein at least one second packet of the plurality of packets is associated with a second delay requirement, andwherein the second delay requirement is lower than the first delay requirement; andtransmitting or receiving, using the transceiver, a message comprising acknowledgement (ACK) information of the at least one first packet,wherein the ACK information is transmitted or received a plurality of times such that the ACK information is transmitted or received in a first DMT symbol and the ACK information is also transmitted or received in a second DMT symbol.107. The method of claim 106 , further comprising passing the at least one second packet when it is received without error to a higher layer without waiting for receipt of other retransmitted packets.108. The method of claim 106 , further comprising passing the at least one first packet when it is received without error to a higher layer without waiting for receipt of other retransmitted packets.109. The method of claim 106 , further comprising waiting for the receipt of other retransmitted packets before passing the at least one first packet a higher layer when they are ...

SYSTEM AND METHOD TO MEASURE AND SCORE APPLICATION HEALTH VIA CORRECTABLE ERRORS

Disclosed are systems, methods, and non-transitory computer-readable storage media for monitoring application health via correctable errors. The method includes identifying, by a network device, a network packet associated with an application running on a node, detecting, by the network device, a correctable error associated with the network packet, and encoding, by the network device, a tag within the network packet, the tag including one or more fields for storing data associated with the correctable error. 1. A method comprising:receiving, by a network device, a plurality of packets from one or more sources;identifying, by the network device, a network packet, from the plurality of packets, that corresponds to an application running on a node;checking, by the network device, the network packet for errors;detecting, by the network device, a correctable error associated with the network packet; andencoding, by the network device, a tag within the network packet, the tag including one or more fields for storing data associated with the correctable error.2. The method of claim 1 , wherein the correctable error comprises an error that can be repaired through error correction and does not require retransmission of data.3. The method of claim 1 , wherein the data comprises at least one of an error count claim 1 , an application score claim 1 , a timestamp claim 1 , an identifier claim 1 , or an Ethernet type.4. The method of claim 1 , wherein the tag is encoded between an Ethernet frame and an Internet Protocol (IP) packet of the network packet claim 1 , between the IP packet and a Transmission Control Protocol (TCP) segment of the network packet claim 1 , or between the TCP segment and a payload of the network packet.5. The method of claim 1 , further comprising:transmitting, by the network device, the network packet to a second network device;detecting, by the second network device, a second correctable error associated with the network packet;based on the second ...

Correction data

Correction data units for data packets of a data stream are generated. A correction data unit is based on a set of the data packets of the stream. The stream is transmitted over a communication channel. A performance measure to be optimized is selected, which relates to the recovery of lost data packets of the stream. To optimize the performance measure, a plurality of correction data vectors are determined, and a plurality of a plurality of non-recovery probabilities, corresponding to the correction data vectors, are initialized. One or more of the correction data vectors are selected that contribute towards a non-recovery probability of an original data packet. The non-recovery probability associated with the original data packet is then minimized based on the selected one or more correction data vectors. The selected one or more correction data vectors are then used to determine which of the original data packets or data correction units to transmit.

DATA PROCESSING APPARATUS AND DATA PROCESSING METHOD

A data processing apparatus and a data processing method which enable provision of an LDPC code that achieves good error-rate performance. An LDPC encoding unit performs encoding using an LDPC code having a code length of 64800 bits and a code rate of 24/30, 25/30, 26/30, 27/30, 28/30, or 29/30. The LDPC code includes information bits and parity bits, and a parity check matrix H is composed of an information matrix portion corresponding to the information bits of the LDPC code, and a parity matrix portion corresponding to the parity bits. The information matrix portion of the parity check matrix H is represented by a parity check matrix initial value table that shows positions of elements of 1 in the information matrix portion in units of 360 columns. The present technology apparatus and method may be applied to LDPC encoding and LDPC decoding. 1an encoding unit configured to encode information bits into an LDPC (Low Density Parity Check) code having a code length of 64800 bits and a code rate of 24/30 on the basis of a parity check matrix of the LDPC code, whereinthe LDPC code includes information bits and parity bits,the parity check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits,the information matrix portion is represented by a parity check matrix initial value table, andthe parity check matrix initial value table is a table showing positions of elements of 1 in the information matrix portion in units of 360 columns, including{'b': 1504', '2103', '2621', '2840', '3869', '4594', '5246', '6314', '7327', '7364', '10425', '11934', '12898', '12954}{'b': 27', '1903', '3923', '4513', '7812', '8098', '8428', '9789', '10519', '11345', '12032', '12157', '12573', '12930}{'b': 17', '191', '660', '2451', '2475', '2976', '3398', '3616', '5769', '6724', '8641', '10046', '11552', '12842}{'b': 13', '1366', '4993', '6468', '7689', '8563', '9131', '10012', '10914', '11574', '11837', ' ...

TRANSMITTING APPARATUS AND INTERLEAVING METHOD THEREOF

A transmitting apparatus is provided. The transmitting apparatus includes: an encoder configured to generate a low density parity check (LDPC) codeword by LDPC encoding based on a parity check matrix; an interleaver configured to interleave the LDPC codeword; and a modulator configured to map the interleaved LDPC codeword onto a modulation symbol, wherein the modulator is further configured to map a bit included in a predetermined bit group from among a plurality of bit groups constituting the LDPC codeword onto a predetermined bit of the modulation symbol. 2. The receiving apparatus of claim 1 , wherein each of the plurality of groups comprises 360 values.3. The receiving apparatus of claim 1 , wherein π(j) is determined based on at least one of the code length claim 1 , a modulation method and the code rate. This is a continuation of U.S. patent application Ser. No. 15/435,042, filed Feb. 16, 2017, which is a continuation of U.S. patent application Ser. No. 15/130,204, filed on Apr. 15, 2016, issued as U.S. Pat. No. 9,692,454 on Jun. 27, 2017, which is a continuation of U.S. patent application Ser. No. 14/625,862, filed Feb. 19, 2015, issued as U.S. Pat. No. 9,602,137 on Mar. 21, 2017, which claims priority from U.S. Provisional Application No. 61/941,676 filed on Feb. 19, 2014, U.S. Provisional Application No. 62/001,170 filed on May 21, 2014, and Korean Patent Application No. 10-2015-0000671 filed on Jan. 5, 2015. The entire disclosures of the prior applications are considered part of the disclosure of this continuation application, and are hereby incorporated by reference.Apparatuses and methods consistent with exemplary embodiments relate to a transmitting apparatus and an interleaving method thereof, and more particularly, to a transmitting apparatus which processes data and transmits the data, and an interleaving method thereof.In the 21st century information-oriented society, broadcasting communication services are moving into the era of digitalization, ...

BIT INTERLEAVER FOR LOW-DENSITY PARITY CHECK CODEWORD HAVING LENGTH OF 16200 AND CODE RATE OF 2/15 AND 16-SYMBOL MAPPING, AND BIT INTERLEAVING METHOD USING SAME

A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 16-symbol mapping. 1. A BICM reception device , comprising:a demodulator configured to perform demodulation corresponding to 16-symbol mapping;a bit deinterleaver configured to perform group-unit deinterleaving on interleaved values, the interleaved values generated after the demodulation; anda decoder configured to restore information bits by LDPC-decoding deinterleaved values generated based on the group-unit deinterleaving, the deinterleaved values corresponding to a LDPC codeword having a length of 16200 and a code rate of 2/15,wherein the group-unit deinterleaving is performed on a group basis, the size of the group corresponding to a parallel factor of the LDPC codeword.2. The BICM reception device of claim 1 , wherein the group-unit deinterleaving corresponds to interleaving performed by using permutation order claim 1 , and {'br': None, 'interleaving sequence={5 33 18 8 29 10 21 14 30 26 11 23 27 4 7 6 24 44 38 31 34 43 13 0 15 42 17 2 20 12 40 39 35 32 1 3 41 37 9 25 19 22 16 28 36}.'}, 'the permutation order corresponds to an interleaving sequence represented by the following'}3. The BICM reception device of claim 2 , wherein the 16-symbol mapping is a Non-Uniform Constellation (NUC) symbol mapping which corresponds to 16 constellations.4. The BICM reception device of claim 2 , wherein the parallel factor is 360 claim 2 , and the group includes 360 values.5. The BICM reception device of claim 4 ...

PARITY BIT CHANNEL ASSIGNMENT FOR POLAR CODING

Methods, systems, and devices for wireless communication are described that support channel selection for parity bits in polar coding techniques. In some cases, an encoder or decoder of a wireless device may assign information bits, frozen bits, and parity check bits to polar channels of an encoder or decoder based on reliability metrics. The information bits may initially be assigned and based on a channel index of the first information bit, the parity check bits may be assigned to channels having higher channel indices than the first information bit. After assignment, the bits may be encoded or decoded. 164-. (canceled)65. A method for wireless communications , comprising:identifying a set of information bits and a set of parity check bits for encoding using a polar code having a set of polar channels;assigning the set of information bits to a first subset of the set of polar channels and the set of parity check bits to a second subset of the set of polar channels based at least in part on respective reliability metrics for the set of polar channels, wherein a parity check bit of the set of parity check bits is assigned to a polar channel based at least in part on a channel index of the polar channel; andencoding the set of information bits and the set of parity check bits based at least in part on the first and second subsets of polar channels of the set of polar channels.66. The method of claim 65 , further comprising:transmitting a codeword comprising the encoded set of information bits and the set of parity check bits.67. The method of claim 65 , wherein the polar channel is associated with a first reliability metric that is greater than a second reliability metric associated with the at least one polar channel.68. The method of claim 65 , further comprising:assigning the parity check bit to the polar channel based at least in part on a row weight of the polar channel.69. The method of claim 65 , wherein a number of the set of parity check bits is less than or ...

CODING METHOD, DECODING METHOD, APPARATUS, AND DEVICE

A coding method, a decoding method, an apparatus, and a device are provided. The method includes: coding, by a sending device, an information bit sequence to obtain a coded bit sequence, where the coded bit sequence includes an information bit, a frozen bit, a CRC check bit, and a frozen check bit; and a value of the frozen check bit and a value of the CRC check bit are obtained by using a same cyclic shift register; performing, by the sending device, polar coding and rate matching on the coded bit sequence to obtain a to-be-sent rate-matched sequence; and sending, by the sending device, the rate-matched sequence. According to the method, time and space for coding calculation and decoding calculation can be effectively reduced, and calculation complexity is reduced. 1. A coding method , comprising:obtaining a to-be-encoded information bit sequence;encoding the to-be-encoded information bit sequence to obtain an encoded bit sequence, wherein the encoded bit sequence comprises an information bit, a frozen bit, a cyclic redundancy check (CRC), bit, and a frozen check bit; and a value of the frozen check bit and a value of the CRC check bit;performing polar coding and rate matching on the coded bit sequence to obtain a to-be-sent rate-matched sequence; andsending the rate-matched sequence.2. The method according to claim 1 , wherein there is at least one frozen check bit claim 1 , and a value of each frozen check bit is a value of a bit in a cyclic shift process of the cyclic shift register claim 1 , or a value of each frozen check bit is a preset value.3. The method according to claim 1 , wherein the coding claim 1 , by the sending device claim 1 , the to-be-encoded information bit sequence comprises:sequentially assigning, by the sending device, values to the coded bit sequence based on a location of the information bit, a location of the frozen bit, a location of the CRC check bit, and a location of the frozen check bit, wherein an operation is as follows:when a to- ...

Bit interleaver for low-density parity check codeword having length of 16200 and code rate of 2/15 and 256-symbol mapping, and bit interleaving method using same

A bit interleaver, a bit-interleaved coded modulation (BICM) device and a bit interleaving method are disclosed herein. The bit interleaver includes a first memory, a processor, and a second memory. The first memory stores a low-density parity check (LDPC) codeword having a length of 16200 and a code rate of 2/15. The processor generates an interleaved codeword by interleaving the LDPC codeword on a bit group basis. The size of the bit group corresponds to a parallel factor of the LDPC codeword. The second memory provides the interleaved codeword to a modulator for 256-symbol mapping.

OAM BASED PHYSICAL LAYER SECURITY USING HYBRID FREE-SPACE OPTICAL-TERAHERTZ TECHNOLOGY

Aspects of the present disclosure describe systems, methods, and structures for physical layer security using hybrid free-space optical and terahertz transmission technologies that advantageously overcome atmospheric characteristics that infirmed the prior art. 1. A communications system employing a hybrid free-space optical (FSO) terahertz (THz) physical layer security scheme comprising: a binary-to-nonbinary converter that converts an input binary sequence;', 'a non-binary LDPC encoder that encodes the nonbinary symbols and provides parity symbols to a mapper/modulator;', 'a multidimensional mapper that maps the nonbinary symbols; and', 'a free space optical and THz transmitter for transmitting the symbols via a FSO and THz channel(s) respectively;, 'a transmitter including a FSO and a THz receiver for receiving transmissions on the FSO and THz channel(s) respectively;', 'a nonbinary a posteriori probability (APP) demapper which receives any data from the FSO and THz receivers and the mapped/modulated parity symbols from the mapper/demodulator, said APP calculates symbol log-likelihood ratios (LLRs); and', 'a nonbinary LDPC decoder that receives the LLRs and outputs any corrected symbols transmitted., 'a receiver including2. The system of wherein the system employs N orbital angular momentum (OAM) modes in an optical domain and N OAM modes in a THz domain.3. The system of wherein nonbinary LDPC codes are chosen such that any information symbols remain intact while generalized parity-symbols are algebraically related to the information symbols.4. The system of wherein the information symbols are transmitted over the FSO and THz channels while the generalized parity symbols are transmitted over classical channel(s).5. The system of wherein multidimensional signaling is used exclusively over the FSO channels and THz channels.6. The system of wherein operating wavelength of the FSO is one selected from the group consisting of: 1550 nm claim 5 , 2 μm claim 5 , 3.85 μm ...

SUPPORT FOR MULTIPLE CODING SCHEMES

A method of wireless communication of a user equipment (UE) includes communicating with a base station using a baseline channel code. The baseline code may include a tail-biting convolutional code (TBCC), or turbo code (TC). The method also includes sending information to the base station indicating a capability of the UE to support multiple channel codes. The method further includes receiving, from the base station, a configuration to operate with any one of the channel codes. 1. A method of wireless communication of a user equipment (UE) , comprising:communicating with a base station using a baseline channel code;sending information to the base station indicating a capability of the UE to support a plurality of channel codes, the plurality of channel codes including the baseline channel code and one or more second channel codes;receiving, from the base station, a configuration to operate with any one of the plurality of channel codes; andreceiving a first set of resources and a second set of resources from the base station, the first set of resources being encoded with the baseline channel code and the second set of resources being encoded with one of the baseline channel code or a second channel code of the one or more second channel codes.2. The method of claim 1 , wherein the baseline channel code includes one of a turbo code claim 1 , a tail-biting convolutional code claim 1 , a low density parity check claim 1 , or a polar code.3. The method of claim 2 , wherein the second channel code includes one of the turbo code claim 2 , the tail-biting convolutional code claim 2 , the low density parity check claim 2 , or the polar code.4. The method of claim 1 , wherein the second set of resources includes one or more shared channel assignments encoded with the second channel code.5. The method of claim 1 , further comprising determining whether the second set of resources is encoded with the baseline channel code or the second channel code based at least in part on ...

TRANSMITTING APPARATUS AND NON-UNIFORM CONSTELLATION MAPPING METHOD THEREOF

A transmitting apparatus is disclosed. The transmitting apparatus includes an encoder to perform channel encoding with respect to bits and generate a codeword, an interleaver to interleave the codeword, and a modulator to map the interleaved codeword onto a non-uniform constellation according to a modulation scheme, and the constellation may include constellation points defined based on various tables according to the modulation scheme. 2. The apparatus as claimed in claim 1 , wherein the constellation points as defined in the list comprises constellation points in one quadrant claim 1 , andwherein constellation points in remaining quadrants are obtained by indicating each constellation point a which is defined in the list as a*, −a*, and −a, respectively, * indicating complex conjugation. This is a continuation of U.S. application Ser. No. 15/726,806 filed Oct. 6, 2017, which is a continuation of U.S. application Ser. No. 14/715,817 filed on May 19, 2015, now U.S. Pat. No. 9,847,851, the disclosures of which is incorporated herein by reference in its entirety.Apparatuses and methods consistent with exemplary embodiments of the inventive concept relate to transmitting and receiving date using broadcasting, more particularly, to the design of non-uniform constellations used in a Bit Interleaved Coded Modulation (BICM) mapping bits at an output of an encoder and interleaver to complex constellations.The current broadcasting systems consistent with the Digital Video Broadcasting Second Generation Terrestrial (DVB-T2) use a Bit Interleaved and Coded Modulation (BICM) chain in order to encode bits to be transmitted. The BICM chain includes a channel encoder like a Low Density Parity Check (LDPC) encoder followed by a Bit Interleaver and a Quadrature Amplitude Modulation (QAM) mapper. The role of the QAM mapper is to map different bits output from the channel encoder and interleaved using the Bit Interleaver to QAM cells. Each cell represents a complex number having real ...

APPARATUS, SYSTEM AND METHOD OF AN ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING (OFDM) TRANSMISSION OVER A WIDE BANDWIDTH

For example, an apparatus may include a segment parser to parse scrambled data bits of a PPDU into a first plurality of data bits and a second plurality of data bits, the PPDU to be transmitted in an OFDM transmission over an aggregated bandwidth comprising a first channel in a first frequency band and a second channel in a second frequency band; a first baseband processing block to encode and modulate the first plurality of data bits according to a first OFDM MCS for transmission over the first channel in the first frequency band; and a second baseband block to encode and modulate the second plurality of data bits according to a second OFDM MCS for transmission over the second channel in the second frequency band. 1. An apparatus of Orthogonal Frequency-Division Multiplexing (OFDM) transmission , the apparatus comprising:a segment parser to parse scrambled data bits of a Physical layer (PHY) Protocol Data Unit (PPDU) into a first plurality of data bits and a second plurality of data bits, the PPDU to be transmitted in an OFDM transmission over an aggregated bandwidth comprising a first channel in a first frequency band and a second channel in a second frequency band, the first plurality of data bits to be transmitted over the first channel in the first frequency band, the second plurality of data bits to be transmitted over the second channel in the second frequency band;a first baseband processor to encode and modulate the first plurality of data bits according to a first OFDM Modulation and Coding Scheme (MCS) for transmission over the first channel in the first frequency band; anda second baseband processor to encode and modulate the second plurality of data bits according to a second OFDM MCS for transmission over the second channel in the second frequency band.2. The apparatus of claim 1 , wherein the segment parser is configured to determine a first number of data bits per OFDM symbol based on one or more first parameters corresponding to the first channel in ...

Transmitting device and transmitting method

A loss correction encoding device having an improved capability of loss correction using LDPC-CC includes a rearranging unit that rearranges information data contained in n information packets according to the constraint length Kmax and the encoding rate (q−1)/q of a check polynomial of the loss correction code used in a loss correction encoding unit. Specifically, the rearranging unit rearranges the information data in such a way that continuous Kmax×(q−1) pieces of information data after rearrangement are contained in different information packets. The rearranging unit distributes the information data to information blocks from n information packets, where n satisfies the formula Kmax×(q−1)≤n.

Dynamic Scaling of Channel State Information

Channel state information (CSI) scaling modules for use in a demodulator configured to demodulate a signal received over a transmission channel, the demodulator comprising a soft decision error corrector (e.g. LDPC decoder) configured to decode data carried on data symbols of the received signal based on CSI values. The CSI scaling module is configured to monitor the performance of the soft decision error corrector and in response to determining the performance of the soft decision error corrector is below a predetermined level, dynamically select a new CSI scaling factor based on the performance of the soft decision error corrector. 1. A channel state information (CSI) scaling module for use in a demodulator configured to demodulate a signal received over a transmission channel , the demodulator comprising a soft decision error corrector configured to decode data carried on data symbols of the received signal based on CSI values associated with the data symbols , the CSI scaling module comprising:a scaling module configured to apply a current CSI scaling factor to CSI values to generate scaled CSI values and provide the scaled CSI values to the soft decision error corrector; monitor performance of the soft decision error corrector; and', 'in response to determining that the performance of the soft decision error corrector is below a predetermined level, activate one of one or more CSI scaling factor selectors; and, 'a control module configured tothe one or more CSI scaling factor selectors, each CSI scaling factor selector configured to, in response to being activated, dynamically select a new CSI scaling factor based on the performance of the soft decision error corrector.2. The CSI scaling module of claim 1 , wherein at least one of the one or more CSI scaling factor selectors is configured to dynamically select a new CSI scaling factor by:sequentially providing a plurality of potential CSI scaling factors to the scaling module to generate at least one scaled CSI ...

DEVICE FOR GENERATING BROADCAST SIGNAL FRAME AND METHOD FOR GENERATING BROADCAST SIGNAL FRAME CORRESPONDING TO TIME INTERLEAVER FOR SUPPORTING PLURALITY OF OPERATION MODES

An apparatus and method for generating a broadcast signal frame corresponding to a time interleaver supporting a plurality of operation modes are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver, the time interleaver uses one of time interleaver groups, and the time interleaver performs the interleaving by using one of a plurality of operation modes. 1. An apparatus for generating broadcast signal frame , comprising:a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal at different power levels;a power normalizer configured to reduce power of the multiplexed signal to a power level corresponding to the core layer signal;a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; anda frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver,wherein the time interleaver performs the interleaving by using one of a plurality of operation modes.2. The apparatus of claim 1 , wherein the operations modes include a first mode corresponding to no time interleaving claim 1 , a second mode for performing a Convolutional ...

Methods and devices for control channel decoding

A circuit arrangement includes a control circuit configured to identify a candidate message in received control data that indicates a potential location of an encoded message in the received control data, the candidate message having a predefined message bit length, a measurement circuit configured to perform a radio measurement, the control circuit further configured to compare the radio measurement to a predefined threshold, and a decoding circuit further configured to, if the radio measurement satisfies the predefined threshold, search for the encoded message in the received control data by decoding the candidate message from the received control data with a reduced message bit length less than the predefined bit length.

METHODS, APPARATUS AND SYSTEMS FOR TRANSMITTING DATA BASED ON POLAR CODE

Wireless transmission of data may be based on Polar code. The wireless communication may include selecting a coding scheme between a first coding scheme and a second coding scheme. The first coding scheme is based on a first Polar code, while the second coding scheme is based on the first Polar code and a second Polar code. An information packet is encoded based on the coding scheme and transmitted. 1. A method for wireless communication , comprising:selecting a coding scheme between a first coding scheme and a second coding scheme, wherein the first coding scheme is based on a first Polar code, wherein the second coding scheme is based on the first Polar code and a second Polar code;encoding an information packet based on the coding scheme; andtransmitting the encoded information packet.2. The method of claim 1 , wherein the coding scheme is selected based on a code rate.3. The method of claim 1 , wherein the coding scheme is selected to be the first coding scheme under a condition that a code rate is greater than or equal to a code rate threshold or the coding scheme is selected to be the second coding scheme under a condition that a current redundancy version is a second redundancy version RV 1.4. The method of claim 1 , wherein the coding scheme is selected to be the second coding scheme claim 1 , and encoding the information packet comprises:encoding the information packet based on the first Polar code to generate a first output;encoding the information packet based on the second Polar code to generate a second output; andperforming a modulo-2 addition operation or an exclusive OR operation on the first output and the second output to obtain a codeword.5. The method of claim 4 , wherein encoding the information packet further comprises at least one of:concatenating the codeword with the first output to generate the encoded information packet;concatenating the codeword with the second output to generate the encoded information packet; orconcatenating the first ...

DATA PROCESSING METHOD, PRECODING METHOD, AND COMMUNICATION DEVICE

An encoder outputs a first bit sequence having N bits. A mapper generates a first complex signal s and a second complex signal s with use of bit sequence having X+Y bits included in an input second bit sequence, where X indicates the number of bits used to generate the first complex signal s, and Y indicates the number of bits used to generate the second complex signal s. A bit length adjuster is provided after the encoder, and performs bit length adjustment on the first bit sequence such that the second bit sequence has a bit length that is a multiple of X+Y, and outputs the first bit sequence after the bit length adjustment as the second bit sequence. As a result, a problem between a codeword length of a block code and the number of bits necessary to perform mapping by a set of modulation schemes is solved. 1. A data processing scheme comprising:an encoding step of outputting a first bit sequence that is an N-bit codeword from a K-bit information bit sequence;{'b': 1', '2', '1', '2, 'a mapping step of generating a first complex signal s and a second complex signal s with use of a bit sequence having X+Y bits included in an input second bit sequence, where X indicates the number of bits used to generate the first complex signal s, and Y indicates the number of bits used to generate the second complex signal s; and'}a bit length adjustment step of, after the encoding step and before the mapping step, performing bit length adjustment on the first bit sequence such that the second bit sequence has a bit length that is a multiple of X+Y, and outputting the first bit sequence after the bit length adjustment as the second bit sequence.2. The data processing scheme of claim 1 , whereinthe encoding step performs accumulate processing on a bit sequence of a parity portion of N−K bits that is generated by performing a systematic LDPC coding, andthe bit length adjustment step generates an adjustment bit sequence by performing at least one repetition of a bit value of a ...

Method and apparatus for information transmission in a radio communication system

A method of transmitting, by a transmitter, information in a wireless communication system, the method includes generating first and second symbols; generating first and second transmit vectors on the basis of an Alamouti code from the first and second symbols; and transmitting the first transmit vector through a first antenna and transmitting the second transmit vector through a second antenna. The first transmit vector consists of a first transmit symbol and a second transmit symbol. The second transmit vector consists of a third transmit symbol and a fourth transmit symbol. The first, second, third, and fourth transmit symbols are transmitted based on first and second resource indexes. The first symbol is a first modulation symbol for first information, and the second symbol is a second modulation symbol for second information.

METHOD AND SYSTEM FOR CONTROLLING THE PEAK-TO-AVERAGE POWER RATIO OF ORTHOGONAL FREQUENCY-DOMAIN SIGNALS

Systems and methods are presented for controlling the peak-to-average-power of a baseband orthogonal-frequency-domain multiplexing (OFDM) signal by designating a subset of the available subcarriers as information-bearing data-subcarriers, and loading remaining subcarriers by symbols that are a function of the symbols loading the data-subcarriers. At the receiver, the data-dependent subcarriers are optionally combined with data-subcarriers to increase error protection. 110.-. (canceled)11. A method for demodulating an OFDM signal comprising a plurality of baseband subcarriers , comprising:receiving a first portion of the baseband subcarriers having data symbols; andreceiving a second portion of the baseband subcarriers having parity symbols that are dependent on the data symbols.12. The method of further comprising:combining the data symbols with the parity symbols; anddetermining a data estimate using the combined symbols to improve fidelity of data detection.13. The method of further comprising determining a data estimate using only the data symbols.14. The method of further comprising:providing an estimated gain across the baseband subcarriers; anddetermining a data estimate using the data symbols and the estimated gain.15. A demodulator for demodulating an OFDM signal comprising a plurality of baseband subcarriers claim 11 , comprising:a receiver configured to receiving a first portion of the baseband subcarriers having data symbols and to receive a second portion of the baseband subcarriers having parity symbols that are dependent on the data symbols.16. The demodulator of further comprising:a combiner configured to combine the data symbols with the parity symbols; anda determiner configured to determine a data estimate using the combined symbols.17. The demodulator of further comprising a determiner configured to determine a data estimate using only the data symbols.18. The demodulator of further comprising:an estimator configured to provide an estimated gain ...

METHOD AND APPARATUS FOR REPETITION-BASED DATA TRANSMISSION FOR NETWORK COOPERATIVE COMMUNICATION

A method by a user equipment (UE) in a wireless communication system includes: receiving a first physical downlink shared channel (PDSCH) transmission and a second PDSCH transmission that carry a same transport block (TB) and are associated with a first transmission configuration indicator (TCI) state and a second TCI state, respectively; determining a transport block size (TBS) of the first PDSCH transmission; and determining low-density parity-check (LDPC) base graph corresponding to the transport block based on the determined TBS for each of the first PDSCH transmission and the second PDSCH transmission, wherein the determined TBS of the first PDSCH transmission is applied to the second PDSCH transmission. 1. A method by a user equipment (UE) in a wireless communication system , the method comprising:receiving a first physical downlink shared channel (PDSCH) transmission associated with a first transmission configuration indicator (TCI) state and a second PDSCH transmission associated with a second TCI state, wherein the first PDSCH transmission and the second PDSCH transmission are associated with a same transport block (TB);determining a first transport block size (TBS) of the first PDSCH transmission, wherein a second TBS of the second PDSCH transmission is the same as the determined first TBS; andidentifying, corresponding to the same transport block, a first low-density parity-check (LDPC) base graph for the first PDSCH transmission based on the determined first TBS and a second LDPC base graph for the second PDSCH transmission based on the second TBS,wherein time domain resources for the first PDSCH transmission and time domain resources for the second PDSCH transmission do not overlap each other,wherein a second TBS of the second PDSCH is the same as the first TBS of the first PDSCH transmission, andwherein a second TBS of the second PDSCH is determined the same as the first TBS of the first PDSCH transmission.2. The method of claim 1 , wherein the first ...

ENCODING DATA WITH POLAR CODES FOR CONTROL CHANNELS

Various embodiments provide for encoding and decoding control link information with polar codes where the frozen bits of the information block can be set to the device identification number instead of being set to null. The frozen bits can be identified based on the type of polar code being used, and while the non-frozen bits can be coded with the channel state information, the frozen bits can be coded with the device ID. In an example where there are more frozen bits than bits in the device ID, the most reliable of the frozen bits can be coded with the device ID. In another example, the frozen bits can be set to the CRC bits, which can then be masked by the device ID. 1. Network equipment , comprising:a processor; and designating, as frozen bits, a group of bit locations, of bit locations in a control channel information block, that have respective decoding reliabilities that do not satisfy a reliability criterion; and', 'coding the frozen bits of the control channel information block with cyclic redundancy check bits that are masked by an identification number associated with a user equipment., 'a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising2. The network equipment of claim 1 , wherein the operations further comprise performing a logical exclusive-or operation between the cyclic redundancy check bits and the identification number to generate the cyclic redundancy check bits masked by the identification number.3. The network equipment of claim 1 , wherein the operations further comprise determining the respective decoding reliabilities of the group of bit locations based on respective signal to noise ratios of the bit locations.4. The network equipment of claim 1 , wherein the operations further comprise determining the respective decoding reliabilities of the group of bit locations based on respective fixed weight computations of the bit locations.5. The network equipment of claim ...

SYSTEMS AND METHODS FOR REMOTE COMPUTING SESSIONS WITH VARIABLE FORWARD ERROR CORRECTION (FEC)

A computing device may include a memory and a processor cooperating with the memory to generate data to correct errors in transmission of packets to a client device based upon a ratio of a first bandwidth in which to transfer content of a buffer and a second bandwidth in which to transfer the generated data, the packets to transfer the content and the generated data to the client device via a channel. The processor may further adjust the ratio based upon a parameter of the channel, and send the content of the buffer and the generated data via packets and through the channel to the client device based on the adjusted ratio. 1. A computing device comprising: generate data to correct errors in transmission of packets to a client device based upon a ratio of a first bandwidth in which to transfer content of a buffer and a second bandwidth in which to transfer the generated data, the packets to transfer the content and the generated data to the client device via a channel,', 'adjust the ratio based upon a parameter of the channel, and', 'send the content of the buffer and the generated data via packets and through the channel to the client device based on the adjusted ratio., 'a memory and a processor cooperating with the memory to'}2. The computing device of wherein the parameter comprises a packet loss rate; and wherein the ratio decreases as the packet loss rate increases.3. The computing device of wherein the processor adjusts the ratio without changing an overall bandwidth of the channel.4. The computing device of wherein the channel comprises a reliable channel and a lossy channel; and wherein a ratio of the first bandwidth to the second bandwidth on the reliable channel is higher than a ratio of the first bandwidth to the second bandwidth on the lossy channel.5. The computing device of wherein the parameter comprises network latency; and wherein the ratio decreases as network latency increases.6. The computing device of wherein the parameter comprises an estimated ...