Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 15. Отображено 15.
18-05-2011 дата публикации

D8PSK/IRZ quadrature modulation-based optical label switching method and system

Номер: CN0102065045A
Автор: LIJIA ZHANG, XIANGJUN XIN, QI ZHANG, YONGJUN WANG, JIANXIN MA, TONGGANG ZHAO, LAN RAO, XIAOLI YIN, XINZHU SANG, CHONGXIU YU, KUIRU WANG, XIAOLEI ZHANG, BO LIU, XING ZHANG, QUANXIN YUAN, JIAO LIU, ZHANG LIJIA, XIN XIANGJUN, ZHANG QI, WANG YONGJUN, MA JIANXIN, ZHAO TONGGANG, RAO LAN, YIN XIAOLI, SANG XINZHU, YU CHONGXIU, WANG KUIRU, ZHANG XIAOLEI, LIU BO, ZHANG XING, YUAN QUANXIN, LIU JIAO
Принадлежит:

The invention relates to a differential 8-level phase-shift keying/inverse return zero (D8PSK/IRZ) quadrature modulation-based optical label switching method and a D8PSK/IRZ quadrature modulation-based optical label switching system. The method comprises the following steps of: deserializing payload in optical packet data to form three paths of signals, performing differential pre-coding on the three paths of signals, respectively loading to three phase modulators and performing phase modulation to generate a D8PSK signal; loading label in the optical packet data to the amplitude of the D8PSK signal in an IRZ modulation mode to generate a D8PSK/IRZ quadrature modulation signal; and sending the D8PSK/IRZ quadrature modulation signal. Under the condition of not increasing any additional resource consumption, the transmission rate of an optical packet data signal is increased, and the utilization rate of bandwidth resources of a network and the modulation extinction ratio of a quadrature signal ...

Подробнее
Номер записи: 1
29-06-2011 дата публикации

Differential 8-phase shift keying (D8PSK)/amplitude shift keying (ASK) orthogonal light label switching method and system based on differential biphasic codes

Номер: CN0102111374A
Автор: XIANGJUN XIN, LIJIA ZHANG, QI ZHANG, YONGJUN WANG, XIAOLI YIN, TONGGANG ZHAO, JIANXIN MA, LAN RAO, XIAOLEI ZHANG, BO LIU, XING ZHANG, SHAOSONG BIAN, QUANXIN YUAN, JIAO LIU, XIN XIANGJUN, ZHANG LIJIA, ZHANG QI, WANG YONGJUN, YIN XIAOLI, ZHAO TONGGANG, MA JIANXIN, RAO LAN, ZHANG XIAOLEI, LIU BO, ZHANG XING, BIAN SHAOSONG, YUAN QUANXIN, LIU JIAO
Принадлежит:

The invention relates to a differential 8-phase shift keying (D8PSK)/amplitude shift keying (ASK) orthogonal light label switching method based on differential biphasic codes, which is characterized in that loads in light group data are subjected to serial-to-parallel conversion to form three-path signals, and the three-path signals are respectively loaded to three phase-modulators for phase modulation after being subjected to differential precoding so as to generate D8PSK signals. Compared with an existing binary transfer system, the capacity of a system provided by the invention is three times of that of the binary transfer system; and label information in the light group data is loaded to the D8PSK signals by using a differential biphase encoding in an ASK mode so as to generate the D8PSK/ASK orthogonal modulating signals based on the differential biphasic codes. Differential biphasic code signals can be used to effectively improve the modulation extinction ratio of the orthogonal signals ...

Подробнее
Номер записи: 2
25-05-2011 дата публикации

Gaussian filter minimum shift frequency keying-based optical wireless fusion system and method

Номер: CN0102075471A
Автор: XIANGJUN XIN, BO LIU, XIAOLI YIN, YONGJUN WANG, QI ZHANG, TONGGANG ZHAO, JIANXIN MA, LAN RAO, XIAOLEI ZHANG, LIJIA ZHANG, QUANXIN YUAN, JINGLUN TU, JIAO LIU, XING ZHANG, XIN GUAN, XIN XIANGJUN, LIU BO, YIN XIAOLI, WANG YONGJUN, ZHANG QI, ZHAO TONGGANG, MA JIANXIN, RAO LAN, ZHANG XIAOLEI, ZHANG LIJIA, YUAN QUANXIN, TU JINGLUN, LIU JIAO, ZHANG XING, GUAN XIN
Принадлежит:

The invention provides a Gaussian filter minimum shift frequency keying-based optical wireless fusion system and a Gaussian filter minimum shift frequency keying-based optical wireless fusion method. In the system, a signal device comprises N signal source modules, wherein each signal source module generates two analog electrical signals; a link device performs optical modulation on received analog electrical signals through an optical link, and transmits N modulated independent optical signals and an unmodulated optical signal; and a receiving device processes the received N modulated independent optical signals and the unmodulated optical signal to acquire information-carrying data so as to realize optical wireless fusion transmission. The method and the system can reduce system cost, improve system performance, and effectively provide multi-user services.

Подробнее
Номер записи: 3
03-11-2010 дата публикации

Millimeter wave WDM-ROF (Wavelength Division Multiplexing-Radio Over Fiber) system and method based on supercontinuum

Номер: CN0101877614A
Автор: XIANGJUN XIN, BO LIU, QI ZHANG, YONGJUN WANG, JIANXIN MA, TONGGANG ZHAO, LAN RAO, XIAOLI YIN, XINZHU SANG, ZHONGXIU YU, KUIRU WANG, XIAOLEI ZHANG, QUANXIN YUAN, LIJIA ZHANG, XING ZHANG, XIN XIANGJUN, LIU BO, ZHANG QI, WANG YONGJUN, MA JIANXIN, ZHAO TONGGANG, RAO LAN, YIN XIAOLI, SANG XINZHU, YU ZHONGXIU, WANG KUIRU, ZHANG XIAOLEI, YUAN QUANXIN, ZHANG LIJIA, ZHANG XING
Принадлежит:

The invention provides millimeter wave WDM-ROF (Wavelength Division Multiplexing-Radio Over Fiber) system and method based on a supercontinuum. A light source module contained in a transmitting device in the system generates 2N paths of independent optical signals by utilizing a supercontinuum optical signal, and N modulating modules only modulate N paths in the 2N paths of independent optical signals; a link device is used for transmitting N paths of independent modulated optical signals and N paths of independent unmodulated optical signals by utilizing WDM through an optical link; and a receiving device is used for processing the N paths of independent modulated optical signals and the N paths of independent unmodulated optical signals in 2N paths of independent received optical signals to obtain a millimeter wave radio-frequency signal carrying information so that millimeter wave wireless transmission is realized. By adopting the method and the system, the cost can be lowered, the channel ...

Подробнее
Номер записи: 4
27-04-2011 дата публикации

Method and device for erasing and interposing D8PSK/ASK orthogonal optical label based on EAM

Номер: CN0102035603A
Автор: Xin Xiangjun, Zhang Lijia, Zhang Qi, Wang Yongjun, Yin Xiaoli, Zhao Tonggang, Ma Jianxin, Rao Lan, Zhang Xiaolei, Liu Bo, Zhang Xing, Yuan Quanxin, Liu Jiao
Принадлежит:

The invention relates to a method and a device for erasing and interposing a differential 8-phase shift keying/amplitude shift keying (D8PSK/ASK) orthogonal optical label based on an electro-absorption modulator (EAM). A coupler divides orthogonal optical label information into two paths with the same power; amplitude information in an orthogonal modulating signal is demodulated by an upper branch signal through an amplitude shift keying signal demodulator, and the demodulated amplitude information is logically negated and loaded onto an electricity input port of the EAM through a phase reverser; a lower branch signal is loaded onto an optical input port of the EAM after being delayed and amplified so as to erase the amplitude information on an optical carrier signal; and an optical band pass filter filters chirp of an optical carrier on which the old label information is erased, the filtered optical carrier is loaded onto the optical input port of the EAM after an Er-doped fiber amplifier ...

Подробнее
Номер записи: 5
14-09-2011 дата публикации

Communication protocol method of wireless sensor network based on linear long distance

Номер: CN0102186258A
Автор: TONGGANG ZHAO, GUOHUA WU, WEI CAI, NA ZHAO, ZHAO TONGGANG, WU GUOHUA, CAI WEI, ZHAO NA
Принадлежит:

The invention provides a communication protocol method of a wireless sensor network based on linear long distance, which is mainly used for realizing security communication of the wireless sensor network with topology distribution being linear long distance. The method is characterized in that the network starting node is set as the data access node and other nodes are set as the terminal nodes; and each node in the network adopts the self-designed protocol mode of port number mapping which satisfies the characteristics of the linear wireless sensor network so as to realize multi-hop relay-like communications among the nodes. As the distance covered by the network is longer, the channel environment is complex and the interference impact is great according to description of the design, the frequency-hopping algorithm suitable for the wireless sensor network based on linear long distance is designed based on the characteristics so as to provide security communications during switching the ...

Подробнее
Номер записи: 6
08-06-2011 дата публикации

Generator and method for generating all-optical chaotic sequence

Номер: CN0102088347A
Автор: ZHANG QI, XIN XIANGJUN, WANG YONGJUN, ZHAO TONGGANG, MA JIANXIN, LIU HUISHI, YIN XIAOLI, YU ZHONGXIU, WANG KUIRU, SANG XINZHU, FANG JIE, QI ZHANG, XIANGJUN XIN, YONGJUN WANG, TONGGANG ZHAO, JIANXIN MA, HUISHI LIU, XIAOLI YIN, ZHONGXIU YU, KUIRU WANG, XINZHU SANG, JIE FANG
Принадлежит:

The invention discloses a generator and method for generating an all-optical chaotic sequence. The method comprises the following steps that: an asymmetric optical coupler splits incident light and correspondingly transmits the split incident light to 1-N optical chaotic subsequence generators so as to motivate the generation of 1-N corresponding random-length optical chaotic subsequences with random lengths; and an optical delayer and a time division multiplexer sequentially mix the 1-N optical chaotic subsequences according to a time sequence so as to obtain a long optical chaotic sequence for outputting. Each chaotic subsequence generator can interfere with input light according to preset working parameters which correspond to a wavelength and light intensity by using a Mach-Zehnder interferometer array consisting of 1-M Mach-Zehnder interferometers, so that the amplitudes of M groups of optical pulse signals output by the Mach-Zehnder interferometer array meet a Chebyshev mapping relation ...

Подробнее
Номер записи: 7
27-10-2010 дата публикации

Method, system and device for implementing orthogonal optical mark switching technique

Номер: CN0101873296A
Автор: BO LIU, JIANXIN MA, LAN RAO, XINZHU SANG, KUIRU WANG, YONGJUN WANG, XIANGJUN XIN, XIAOLI YIN, ZHONGXIU YU, QUANXIN YUAN, LIJIA ZHANG, QI ZHANG, XIAOLEI ZHANG, XING ZHANG, TONGGANG ZHAO, LIU BO, MA JIANXIN, RAO LAN, SANG XINZHU, WANG KUIRU, WANG YONGJUN, XIN XIANGJUN, YIN XIAOLI, YU ZHONGXIU, YUAN QUANXIN, ZHANG LIJIA, ZHANG QI, ZHANG XIAOLEI, ZHANG XING, ZHAO TONGGANG
Принадлежит:

The invention relates to a method, a system, and a device for implementing an orthogonal optical mark switching technique. Payload in optical grouped data is deserialized to form a three-path signal; after being differentially pre-coded, the three-path signal is loaded to a three-phase modulator for phase modulation to generate a differential eight-phase shift keying signal; and the head information in the optical grouped data is loaded onto the amplitude of the differential eight-phase shift keying signal through an amplitude shift keying modulation mode to generate a differential eight phase shift keying/amplitude shift keying orthogonal modulation signal, and then the differential eight phase shift keying/amplitude shift keying orthogonal modulation signal is transmitted, thus increasing transmission capacity of the optical grouped data signal, improving utilization rate of network bandwidth resources and network transmission capacity under the condition that any extra resource consumption ...

Подробнее
Номер записи: 8
08-06-2011 дата публикации

High speed optical transmission system and method based on TCM-64QAM code modulation

Номер: CN0102088317A
Автор: XIANGJUN XIN, LIJIA ZHANG, QI ZHANG, YONGJUN WANG, TONGGANG ZHAO, JIANXIN MA, LAN RAO, XIAOLI YIN, JIAO LIU, BO LIU, TIAN CAO, KAIMIN WANG, RUI JI, QUANXIN YUAN, XING ZHANG, XIN GUAN, XIN XIANGJUN, ZHANG LIJIA, ZHANG QI, WANG YONGJUN, ZHAO TONGGANG, MA JIANXIN, RAO LAN, YIN XIAOLI, LIU JIAO, LIU BO, CAO TIAN, WANG KAIMIN, JI RUI, YUAN QUANXIN, ZHANG XING, GUAN XIN
Принадлежит:

The present invention provides a high speed optical transmission system and a method based on TCM-64QAM code modulation, wherein the system consists of the following modules in all: a TCM coding module, wherein the TCM maps each code segment into a signal centralizing 2(k+1) modulated signals by using a grid-shaped code (convolutional code) with a code rate k/(k+1); an optical fiber transmission module, which comprises an electric terminal, an optical transmission device and an optical receiving device, and converts an electric signal into an optical signal, modulates and demodulates the optical signal, and transmits it at a high speed in an optical fiber communication system; and a TCM decoding module, which inversely maps the received signal, in a receiving end, into a code sequence of the convolutional code, and sends it into a Viterbi decoder to decode and obtain an original signal. The method and the system of the invention can increase the transmission rate of information, and simultaneously ...

Подробнее
Номер записи: 9
27-04-2011 дата публикации

Optical orthogonal frequency division multiplexing (OFDM) dynamic allocation-based passive access network system and method

Номер: CN0102035789A
Автор: Xin Xiangjun, Liu Bo, Zhang Qi, Wang Yongjun, Yin Xiaoli, Zhao Tonggang, Ma Jianxin, Rao Lan, Zhang Xiaolei, Zhang Lijia, Guan Xin, Hao Yuting, Chen Yulu, Yuan Quanxin, Liu Jiao
Принадлежит:

The invention provides an optical orthogonal frequency division multiplexing (OFDM) dynamic allocation-based passive access network system and a method thereof. In the system, multiple carriers generated by an optical multi-carrier generating unit included in a signal sending unit are input to an OFDM generating unit and then transmitted to a link unit, and signals are subjected to polarization multiplexing, fiber channel transmission and polarization demultiplexing in the link unit; and a signal matching and receiving unit acquires radio-frequency signals carrying information by using a signal detection module, and the information required by a user is demodulated through a signal demodulation processing unit. Dynamic subcarrier allocation of optical OFDM access can be realized by adopting the method and the system, wherein the sequential watermarking detection algorithm (SWDA) adopted by the system can dynamically adjust the distribution of each subcarrier in OFDM symbols, and an optimized ...

Подробнее
Номер записи: 10
15-06-2011 дата публикации

Mini type internet of things networking system based on millimeter wave and method thereof

Номер: CN0102098062A
Автор: XIANGJUN XIN, BO LIU, XIAOLI YIN, YONGJUN WANG, QI ZHANG, TONGGANG ZHAO, JIANXIN MA, LAN RAO, XIAOLEI ZHANG, LIJIA ZHANG, QUANXIN YUAN, YUHANG DAI, JINGLUN TU, WENWEN FAN, JIAO LIU, XING ZHANG, XIN GUAN, XIN XIANGJUN, LIU BO, YIN XIAOLI, WANG YONGJUN, ZHANG QI, ZHAO TONGGANG, MA JIANXIN, RAO LAN, ZHANG XIAOLEI, ZHANG LIJIA, YUAN QUANXIN, DAI YUHANG, TU JINGLUN, FAN WENWEN, LIU JIAO, ZHANG XING, GUAN XIN
Принадлежит:

The invention provides a mini type internet of things networking system based on a millimeter wave and a method thereof. An information acquisition device in the system is used for modulating a processed analog electric signal of output information acquired by a sensor onto a millimeter wave radio frequency, and a radio frequency antenna is used for transmitting the information to a center controller at a distant place through a space; the center controller is used for collecting the information which is transmitted by the information acquisition device through a space by the radio frequency antenna, demodulating the information, and outputting the information to a center control module, and the center control module is used for necessarily memorizing, controlling and analyzing the information, communicating with the external world, demodulating the data information by means of millimeter wave radio frequency in a system, and transmitting the demodulated data information; and an information ...

Подробнее
Номер записи: 11
21-07-2010 дата публикации

All-optical packet switching method, edge node and core nodes

Номер: CN0101783974A
Автор: FANG JIE, LI SHUWEN, MA JIANXIN, SANG XINZHU, WANG KUIRU, WANG YONGJUN, XIN XIANGJUN, YIN XIAOLI, YU ZHONGXIU, ZHANG QI, ZHAO TONGGANG, JIE FANG, SHUWEN LI, JIANXIN MA, XINZHU SANG, KUIRU WANG, YONGJUN WANG, XIANGJUN XIN, XIAOLI YIN, ZHONGXIU YU, QI ZHANG, TONGGANG ZHAO
Принадлежит:

The invention discloses an all-optical packet switching method and system, an edge node and core nodes. The method is characterized in that optical code labels needed by each node in the routing paths are generated by employing optical code division multiplexing (OCDM) technology, wherein the optical code labels are generated through frequency domain coding and time domain coding of optical orthogonal codes; the code words used during time domain coding are used for indicating the different core nodes in the routing paths; and the code words used during frequency domain coding are used for indicating the switching output port in each core node. During transmission, the optical packets carry all the optical code labels needed in the routing paths. The core nodes take out the optical code labels corresponding to self from all the optical code labels carried by the optical packets through time domain coding and further carry out frequency domain coding on the optical code labels which are ...

Подробнее
Номер записи: 12
17-08-2011 дата публикации

Optical orthogonal frequency division multiplexing system and method based on avalanche photodiode

Номер: CN0102158452A
Автор: LIJIA ZHANG, XIANGJUN XIN, YONGJUN WANG, QI ZHANG, TONGGANG ZHAO, JIANXIN MA, LAN RAO, XIAOLI YIN, XINZHU SANG, KUIRU WANG, ZHONGXIU YU, XIAOLEI ZHANG, BO LIU, QUANXIN YUAN, XING ZHANG, JIAO LIU, ZHANG LIJIA, XIN XIANGJUN, WANG YONGJUN, ZHANG QI, ZHAO TONGGANG, MA JIANXIN, RAO LAN, YIN XIAOLI, SANG XINZHU, WANG KUIRU, YU ZHONGXIU, ZHANG XIAOLEI, LIU BO, YUAN QUANXIN, ZHANG XING, LIU JIAO
Принадлежит:

The invention provides an optical orthogonal frequency division multiplexing system based on an avalanche photodiode and a method thereof. The method comprises the steps that an off-line DSB (Double Side-Band Transmission) module of a signal source device in the system produces a path of digital electrical signals with the modulation format being 4QAM-OFDM, and a digital-to-analog converter converts the digital electrical signals into analog electrical signals; an optical link device modulates the received analog electrical signals to optical carrier wave to be uploaded to a distant receiving terminal, and performs photoelectric detection on the analog electrical signals through the avalanche photodiode with high sensitivity, so as to realize optoelectronic conversion and obtain the analog electrical signals; and a signal processing device performs bandpass filtering, analog-to-digital conversion and demodulation on the received analog electrical signals, so as to obtain high-speed data ...

Подробнее
Номер записи: 13
21-07-2010 дата публикации

All-optical packet switching method, edge node and core nodes

Номер: CN0101783973A
Автор: FANG JIE, LI SHUWEN, MA JIANXIN, SANG XINZHU, WANG KUIRU, WANG YONGJUN, XIN XIANGJUN, YIN XIAOLI, YU ZHONGXIU, ZHANG QI, ZHAO TONGGANG, JIE FANG, SHUWEN LI, JIANXIN MA, XINZHU SANG, KUIRU WANG, YONGJUN WANG, XIANGJUN XIN, XIAOLI YIN, ZHONGXIU YU, QI ZHANG, TONGGANG ZHAO
Принадлежит:

The invention discloses an all-optical packet switching method and system, an edge node and core nodes. The method is characterized in that optical code labels needed by each node in the routing paths are generated by employing optical code division multiplexing (OCDM) technology, and the optical code labels are serially arranged in order according to the delay time to form optical code label stacks based on time and then form optical packets with payload to enter into optical networks to be transmitted, and the core nodes are used for identifying the first label in the label stacks to obtain routing information, simultaneously delay the payload and then are coupled with the label stacks to form new optical packets, wherein the first label, which synchronizes with the payload, in the new optical packets becomes the label following the first label, thus removing the first label from the label stacks, meanwhile, switching of the new optical packets is controlled according to the routing information ...

Подробнее
Номер записи: 14
21-07-2010 дата публикации

Optical-packet full switch method, system and device

Номер: CN0101783972A
Автор: FANG JIE, LI SHUWEN, MA JIANXIN, SANG XINZHU, WANG KUIRU, WANG YONGJUN, XIN XIANGJUN, YU ZHONGXIU, ZHANG QI, ZHAO TONGGANG, JIE FANG, SHUWEN LI, JIANXIN MA, XINZHU SANG, KUIRU WANG, YONGJUN WANG, XIANGJUN XIN, ZHONGXIU YU, QI ZHANG, TONGGANG ZHAO
Принадлежит:

The invention discloses an optical-packet full switch method, a system and a device. The method comprises the following steps: A, a source edge router converts data at the IP layer into net load, OCDM coding is carried out on optical signals carrying the net load to form an optical packet with an OCDM tab code, and the optical packet is transmitted; B, a core router receiving the optical packet decodes the OCDM tab code, if decoding is successful, the net load in the optical packet is recovered, the next hop router is utilized to newly perform OCDM coding on the recovered net load to form an optical packet with a new OCDM tab code, and then the optical packet is transmitted; C, if the router which receives the optical packet is still a core router, the operation executed by the core router in step B is executed continuously until a destination edge router receives the optical packets. By adopting the invention, optical signals do not need to be buffered by an optical buffer, thus avoiding ...

Подробнее
Номер записи: 15