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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

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Мониторинг СМИ

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

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Применить Всего найдено 41. Отображено 41.
06-06-2023 дата публикации

Method for optimizing routing decision and wavelength allocation on sub-domain satellite

Номер: CN116232425A
Автор: ZHANG QI, LI YUANFENG, CHEN DONG, YAO HAIPENG, QIAN JINXI, LIU LIANG, TAO YING, TIAN FENG, TIAN QINGHUA, WANG FU, CHAI FURONG, SUN MENG, TAO YUHANG
Принадлежит:

The invention provides a sub-domain on-satellite routing decision and wavelength allocation optimization method in the technical field of satellite communication. In the technical field of satellite communication routing and wavelength allocation, although a general centralized routing and wavelength allocation method in the prior art can find a routing optimal solution theoretically, the routing blocking rate is effectively reduced, and the network throughput is greatly improved, the optimal solution can be found in the centralized routing and wavelength allocation method. But actually, along with the gradual expansion of the scale of the satellite network, the acquisition of global information of the satellite network also becomes a difficult problem, and the algorithms cannot be practically applied to the large-scale satellite network. According to the method, a domain-divided on-satellite routing decision and wavelength allocation optimization method is innovatively provided, distributed ...

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Номер записи: 1
16-05-2023 дата публикации

Linear light sampling method for software synchronous processing based on single-step interpolation

Номер: CN116131936A
Автор: XIN XIANGJUN, TIAN QINGHUA, SU RIRONG, YAO HAIPENG, GAO RAN, ZHANG QI, TIAN FENG, WANG YONGJUN, YANG LEIJING, ZHU LEI, CHEN CONGKE
Принадлежит:

The invention relates to the technical field of linear light sampling, in particular to a linear light sampling method for software synchronization processing based on single-step interpolation, and the method comprises the following steps: obtaining a plurality of discrete sampling data signals xk for software synchronization processing; performing fast Fourier transform on the discrete sampling data signal to obtain frequency spectrum information of the to-be-measured signal; obtaining a coarse period value n0 of the sampling point data through the frequency spectrum information; and a compensation error value delta is obtained through single-step interpolation calculation at a given position of the coarse period value, and an accurate period n1 is obtained after the coarse period value is compensated and used for eye pattern reconstruction. According to the method, accurate eye pattern monitoring and constellation diagram analysis of the to-be-detected signal at the receiving end can ...

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Номер записи: 2
18-04-2023 дата публикации

Method for reducing minimum CSPR required by KK receiver and communication system

Номер: CN115987402A
Автор: YU CHAO, XIN XIANGJUN, YAO HAIPENG, GAO RAN, ZHANG QI, ZHOU ZHICHENG, TIAN BO, CHEN CONGKE
Принадлежит:

The invention belongs to the technical field of optical communication, and particularly relates to a method for reducing the minimum CSPR required by a KK receiver and a communication system. The method for reducing the minimum CSPR required by the KK receiver comprises the steps that an optical signal is divided into two paths, the first path of signal is not additionally processed, and the second path of signal filters out superposed carriers through a wavelength blocker; performing time delay compensation on the first and second paths of signals; subtracting the estimated non-linear signal self-beat frequency interference from the first path of received signal, namely eliminating an interference term; a direct-current signal which is large enough is superposed, and the minimum phase condition of the signal is met; phase information of the signals is recovered through a KK algorithm; and thus, the signal under the low CSPR can still meet the minimum phase condition.

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Номер записи: 3
25-04-2023 дата публикации

Signal receiving method and system for receiving end of optical fiber transmission system

Номер: CN116015476A
Автор: ZHANG QI, XIN XIANGJUN, MA HAO, YAO HAIPENG, GAO RAN, LIU BINGCHUN, TIAN FENG, TIAN QINGHUA, WANG YONGJUN, WANG FU, YANG LEIJING, LI ZHIPEI, CHANG HUAN, ZHANG WENQUAN, WU RUIDE, HUANG XIN
Принадлежит:

The invention discloses a signal receiving method and system for a receiving end of an optical fiber transmission system, and relates to the field of signal processing, and the method comprises the steps: obtaining constellation point data of the receiving end of the optical fiber transmission system; filtering the constellation point data to obtain a pre-filtering signal; dividing the pre-filtering signal into a training signal and a test signal; determining a judgment threshold value according to the training signal; if the test signal is within the threshold interval of the judgment threshold, performing first judgment output on the test signal by adopting a direct hard judgment mode; if the test signal is not in the threshold interval of the judgment threshold, filtering the test signal by adopting a post-filter, and performing second judgment output by adopting an MLSE judgment mode; and combining the first judgment output and the second judgment output to serve as a judgment receiving ...

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Номер записи: 4
01-08-2023 дата публикации

Method and device for recovering carrier phase of optical fiber communication system

Номер: CN116527466A
Автор: ZHANG QI, LI ZHIPEI, XIN, XIANGJUN, GAO YUAN, JIANG JINKUN, YAO HAIPENG, YU JIANJUN, GAO RAN, TIAN QINGHUA, TIAN FENG, WANG YONGJUN, YANG LEIJING, WANG FU, WANG XISHUO, CHANG HUAN
Принадлежит:

The invention provides a carrier phase recovery method and device for an optical fiber communication system. The method comprises the following steps: predicting received signal carrier phase noise at a receiving end of an optical fiber communication system by utilizing linear time domain data filtering; pre-rotating the received signal according to the predicted carrier phase noise, and pre-compensating the carrier phase noise; estimating a residual error of the received signal after pre-rotation through a power iteration method, wherein the residual error is used for extracting an error between predicted carrier phase noise and actual phase noise; and updating the next state quantity of linear time domain data filtering according to the extracted error between the predicted phase noise and the actual phase noise to realize carrier phase recovery. The method can effectively solve the problem of carrier phase recovery in an optical fiber communication system, and is good in algorithm robustness ...

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Номер записи: 5
18-08-2023 дата публикации

Hybrid coding and decoding method and device based on sub-constellation space

Номер: CN116614202A
Автор: XIN, XIANGJUN, TIAN FENG, GUO QIANHUI, WU TIANZE, ZHANG QI, YAO HAIPENG, GAO RAN, TIAN QINGHUA, WANG YONGJUN, WANG FU, HUANG XIN, ZHANG WENQUAN, WU RUIDE, LI ZHIPEI, GUO DONG
Принадлежит:

The invention provides a hybrid coding and decoding method and device based on a sub-constellation space, and the method comprises the steps: generating bit information, and separating the bit information into two paths of signals; lDPC and Polar coding are carried out on the two paths of signals respectively, and polarization multiplexing processing is carried out to obtain X polarization and Y polarization; determining whether to perform amplitude translation on the Y polarization based on the constellation segmentation results of the X polarization and the Y polarization, and outputting a signal; the laser is loaded to the laser for transmission; during receiving, the signal is separated into a 4D signal generated by X polarization, a 4D signal generated by Y polarization and a four-phase phase shift keying signal; calculating the log-likelihood ratio of each bit in each symbol; determining bit data of each symbol based on a log-likelihood ratio to obtain X polarization and Y polarization ...

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Номер записи: 6
30-05-2023 дата публикации

Clustering-based probabilistic shaping signal judgment method

Номер: CN116192593A
Автор: XIN XIANGJUN, YAO HAIPENG, ZHANG QI, WU DI, GAO RAN, LIU XINYU
Принадлежит:

The invention relates to the field of optical fiber communication, in particular to a clustering-based probabilistic shaping signal judgment method, which comprises the following steps of: acquiring a probabilistic shaping M-QAM signal data set to be judged; searching and determining a k-nearest neighbor probability shaping M-QAM signal data point of each probability shaping M-QAM signal data point, and calculating an angle variance formed by each probability shaping M-QAM signal data point and the corresponding k-nearest neighbor probability shaping M-QAM signal data point; dividing each probabilistic shaping M-QAM signal data point into an internal point or a boundary point by comparing the angle variance of each probabilistic shaping M-QAM signal data point with a preset angle variance threshold; setting an internal point division rule and a boundary point affiliation rule to divide the probabilistic shaping M-QAM signal data set into M clusters; according to a clustering result that ...

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Номер записи: 7
27-06-2023 дата публикации

Raw material mixing device for suspending agent production

Номер: CN116328596A
Автор: ZHANG GANGQIANG, CAO HENGYE, JIANG WENXING, XIE ZHIGANG, YAO HAIPENG
Принадлежит:

The invention discloses a raw material mixing device for suspending agent production, and relates to the field of pesticide production. The reaction kettle is used for solving the problem that a conventional reaction kettle is not provided with an adjusting mechanism and can only realize stirring and mixing of raw materials, so that the raw material mixing effect is common. Comprising an adjusting mechanism; when the eccentric wheel rotates to the highest point, the eccentric wheel drives the transmission wheel to move upwards through the transmission belt, so that the transmission wheel drives the hinged plate to rotate upwards, and the right side of the bottom of the stirring barrel is inclined upwards at the moment; when an eccentric wheel rotates to the lowest point, the eccentric wheel drives a transmission wheel to move downwards through a transmission belt, at the moment, the right side of the bottom of the stirring barrel inclines downwards, inclination of the angle of the stirring ...

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Номер записи: 8
18-08-2023 дата публикации

Dynamic configuration method and device for cluster service function chain of unmanned aerial vehicle

Номер: CN116614377A
Автор: YAO HAIPENG, LI QUN, MAI TIANLE, XIN, XIANGJUN, ZHANG NI, GE HONGWU, YUAN WANMAI, WU WEI
Принадлежит:

The invention provides a dynamic configuration method and device for an unmanned aerial vehicle cluster service function chain, and relates to the technical field of unmanned aerial vehicle communication. A target neural network model used in the invention adopts an on-demand cooperative communication mode to carry out service function chain dynamic deployment, and different teammate models are established for different teammates; compared with an existing broadcast communication algorithm or point-to-point communication mode, different excitation information is transmitted among the unmanned aerial vehicles in an on-demand communication mode, and the Q value of each unmanned aerial vehicle needs to be added into the excitation information sent by other unmanned aerial vehicles, that is, each unmanned aerial vehicle is influenced by the excitation information of other unmanned aerial vehicles during action selection, so that the excitation information of the other unmanned aerial vehicles ...

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Номер записи: 9
07-07-2023 дата публикации

Coherent optical communication system optical domain pre-compensation method based on reinforcement learning

Номер: CN116405124A
Автор: LI ZHIPEI, XIN XIANGJUN, ZHANG QI, YAO HAIPENG, WANG CHENCHEN, GAO RAN, WANG YONGJUN, TIAN QINGHUA, TIAN FENG, CHEN CONGKE
Принадлежит:

The invention belongs to the technical field of optical fiber communication transmitter damage pre-compensation, and particularly relates to a coherent optical communication system optical domain pre-compensation method based on reinforcement learning. The method comprises the following steps: S1, acquiring code elements and clock synchronization signals at transmitting and receiving ends; s2, constructing a transmitting end neural network predistorter; s3, defining a reinforcement learning optimization target; s4, optimizing a transmitting end neural network predistorter for the receiving and transmitting end signals obtained in the step S1 by using a reinforcement learning optimization target; s5, repeating the steps S1 and S4 until the reinforcement learning optimization objective function is converged; s6, obtaining a predistortion frequency response curve through the converged predistorter; and S7, constructing a required optical domain filtering curve shape by using a programmable ...

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Номер записи: 10
13-06-2023 дата публикации

PCB surface defect detection method based on improved YOLOv5 algorithm

Номер: CN116258707A
Автор: GAO WEI, NIU JIE, YAO HAIPENG, XIN GANG
Принадлежит:

The invention relates to the technical field of PCB surface defect detection, in particular to a PCB surface defect detection method based on an improved YOLOv5 algorithm, and the method comprises the steps: obtaining a PCB image data set containing surface defects, and carrying out the image preprocessing, thereby obtaining a PCB surface defect sample data set; an improved YOLOv5 network architecture is constructed, and an improved YOLOv5 algorithm model is obtained; training the improved YOLOv5 algorithm model by using the PCB surface defect sample data set to obtain a trained improved YOLOv5 algorithm model, namely a PCB surface defect detection model; and preprocessing a to-be-detected PCB image, inputting the to-be-detected PCB image into the PCB surface defect detection model, and outputting a defect position and a corresponding defect category in the PCB image. According to the PCB surface defect detection method based on the improved YOLOv5 algorithm, the detection performance of ...

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Номер записи: 11
06-06-2023 дата публикации

High-capacity multiband optical transmission system and method

Номер: CN116232531A
Автор: TIAN FENG, XIN XIANGJUN, YUE XIRU, WU DI, YAO HAIPENG, ZHANG QI, GAO RAN, WU TIANZE
Принадлежит:

The invention relates to the technical field of optical communication, in particular to a high-capacity multiband optical transmission system and method.The high-capacity multiband optical transmission system comprises a transmitting module used for generating high-order QAM (Quadrature Amplitude Modulation) modulation optical signals of six bands of O, E, S, C, L and U. The transmission link is connected with the transmitting module through a wavelength division multiplexer, so that the high-order QAM modulation optical signals of six wavebands are multiplexed by the wavelength division multiplexer and then are subjected to optical fiber transmission; the receiving module is connected with the transmission link through a wavelength division demultiplexer so as to receive the amplified signals which are demultiplexed to the corresponding wave bands through the wavelength division demultiplexer after optical fiber transmission, and off-line digital signal processing is carried out on the ...

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Номер записи: 12
07-04-2023 дата публикации

Switching node structure between reconfigurable optical add drop multiplexers and wavelength switching method thereof

Номер: CN115941111A
Автор: WANG FU, XIN XIANGJUN, YAO HAIPENG, ZHANG QI, GAO RAN, TANG HUAIZHAO, LI SHANGYI, LI ZHIPEI, TIAN QINGHUA, TIAN FENG, WANG YONGJUN, DONG ZE, LI XINYING, CHEN CONGKE
Принадлежит:

The invention belongs to the technical field of optical fiber communication, and particularly relates to a reconfigurable switching node structure between optical add drop multiplexers and a wavelength switching method thereof. The reconfigurable optical add-drop multiplexer comprises a wavelength selection switch which is provided with an input port, a plurality of output ports and a Pass output port; the input end circulator is connected with the input port of the wavelength selection switch; the plurality of output end circulators are respectively connected with the output ports of the wavelength selection switch in a one-to-one correspondence manner; according to the reconfigurable optical add-drop multiplexer, only one wavelength selection switch is adopted, through the reflector of the Pass output port of the wavelength selection switch, a straight-through wavelength signal in a wavelength division multiplexing optical signal is reflected back to the wavelength selection switch for ...

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Номер записи: 13
13-06-2023 дата публикации

Ultra-high-order QAM modulation transmission system and method based on pre-equalization

Номер: CN116260693A
Автор: TIAN FENG, XIN XIANGJUN, WANG NAN, WU TIANZE, ZHANG QI, YAO HAIPENG, WANG RUICHUN, GAO RAN, TIAN QINGHUA, WANG YONGJUN, WANG FU, HUANG XIN, LI ZHIPEI, ZHANG WENQUAN, WU RUIDE, CHANG HUAN
Принадлежит:

The invention provides an ultra-high-order QAM modulation transmission system and method based on pre-equalization, and the system comprises a transmitting end algorithm module which comprises a pre-equalization processing layer, the pre-equalization processing layer processes a to-be-transmitted data matrix based on a weight matrix, and the weight matrix transmits the to-be-transmitted data matrix to the transmitting end algorithm module after the to-be-transmitted data matrix is processed each time; updating the weight matrix based on the number of 0 taps in the weight matrix; the data transmitting module comprises an arbitrary wave generator and an IQ modulator, and the data transmitting module outputs data through the arbitrary wave generator and the IQ modulator; the data receiving module comprises a coherent receiver and an oscilloscope, the coherent receiver is connected with the IQ modulator through a transmission optical fiber, and the transmitted data are sequentially processed ...

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Номер записи: 14
11-07-2023 дата публикации

Joint coding modulation method suitable for short-distance high-speed optical fiber communication system

Номер: CN116418458A
Автор: TIAN QINGHUA, XIN XIANGJUN, ZHANG YUQING, LIU ZIQI, YAO HAIPENG, GAO RAN, DONG ZE, ZHU LEI, WANG FU, TIAN FENG, ZHANG QI, WANG YONGJUN
Принадлежит:

The invention provides a coding modulation method suitable for a short-distance high-speed optical fiber communication system, which comprises the following steps of: 1, grouping input information bits into a first information sequence ua which is not subjected to any operation and has the length of kabit and a second information sequence us which is to be shaped and has the length of ksbit; 2, converting the uniformly distributed binary information into a symbol sequence with target distribution by adopting a distribution matcher based on an enumeration ball mapping method, and weighing the symbol sequence subjected to binary tagging as shaping information uc; and step 3, uc is used as input information of a forward error correction coding module and is coded twice, and coding is carried out by a hard decision-based ladder code and then a soft decision-based Hamming code. According to the scheme, the probability shaping technology based on enumeration ball mapping and the forward error ...

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Номер записи: 15
21-07-2023 дата публикации

Adaptive receiving method for partial response codes of optical fiber communication system

Номер: CN116470964A
Автор: ZHANG QI, XIN XIANGJUN, YAO HAIPENG, HAO YUFAN, JIANG JINKUN, GAO RAN, TIAN QINGHUA, TIAN FENG, WANG YONGJUN, YANG LEIJING, LI ZHIPEI, WANG FU, WANG XISHUO, CHANG HUAN, GUO DONG
Принадлежит:

The invention provides a self-adaptive receiving method for partial response codes of an optical fiber communication system, and relates to the field of optical fiber communication systems. The method comprises the following steps of: performing mixed feed filtering processing on a signal by utilizing a self-adaptive partial response mixed feed structure; the filter tap coefficient is updated with a large step length according to an adaptive algorithm, and the filter tap coefficient corresponding to the partial response coding coefficient is calculated; the calculated tap coefficient is updated with a small step length, and a self-adaptive partial response removal algorithm is carried out on the received signal; and directly decoding the signal of which the partial response code is removed to obtain original information. When the method provided by the embodiment of the invention is used for receiving the partial response coding signal, the influence of noise and intersymbol interference ...

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Номер записи: 16
15-08-2023 дата публикации

Delay redundancy time sensitive flow scheduling method for end-to-end cooperative synchronization

Номер: CN116599910A
Автор: WANG FU, XIN XIANGJUN, YAO HAIPENG, GAO RAN, DONG ZE, ZHANG QI, WANG YONGJUN, TIAN QINGHUA, SUN DANDAN, TIAN FENG, ZHANG WENQUAN, WU RUIDE, HUANG XIN, WANG YONG, LI SHANGYI, HU SHANTING, LI ZHIPEI, GUO DONG, CHANG HUAN, YU CHAO, ZHOU SITONG, LIU XINYU
Принадлежит:

The invention discloses an end-to-end cooperative time delay redundancy time sensitive flow scheduling method, and belongs to the field of optical networks and industrial internet. On the basis of a ring queue and a forwarding model, two queues used for transmitting time trigger streams in the forwarding model are expanded into three queues, one of the queues is an alternative queue, and the time trigger streams rushing into the alternative queue are transmitted in the next time slot; the flow queue priority timed conversion is triggered through the buffer area time of the switch to ensure that the node data packet of the switch is transmitted within two periods; in an optical network scene, time delay redundancy time sensitive flow scheduling of end-to-end cooperation is realized based on a time sensitive network, a special alternative queue is set for a time trigger flow by improving a traditional ring queuing and forwarding model, a protected transmission window is provided for the time ...

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Номер записи: 17
23-05-2023 дата публикации

Geometry-probability shaping optical signal generation method based on automatic encoder

Номер: CN116155393A
Автор: CHANG HUAN, XIN XIANGJUN, LI YUZHE, GAO RAN, ZHANG QI, YAO HAIPENG, ZHANG WENQUAN, WU RUIDE, HUANG XIN, YAN JINGHAO, DONG ZE, GUO DONG, PAN XIAOLONG, HU SHANTING, LI ZHIPEI, WANG FU, TIAN QINGHUA, TIAN FENG
Принадлежит:

The invention discloses a geometric-probability shaping optical signal generation method based on an automatic encoder, and belongs to the field of optical communication. An optical signal is generated through an automatic encoder, the generated signal is continuously updated through the iterative training process of the automatic encoder, an optical signal modulation method suitable for a transmission channel is obtained after training of the automatic encoder is completed, and low-dimensional information of the automatic encoder is reconstructed back to a high-dimensional expression through a decoder; the automatic encoder predicts an input regression task and is responsible for automatically constructing a transmitting constellation, enabling transmitting bits to correspond to constellation generation points, adding damage to a transmitting signal through an optical fiber channel, and restoring a receiving signal into a bit sequence through a decoder. According to the method, the influence ...

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Номер записи: 18
30-05-2023 дата публикации

Residual neural network-based damage compensation method for high-capacity optical communication system

Номер: CN116192255A
Автор: XIN XIANGJUN, YAO HAIPENG, ZHANG QI, WU DI, GAO RAN, CHANG HUAN, MA YIQIAN
Принадлежит:

The invention relates to the field of optical communication, in particular to a damage compensation method of a high-capacity optical communication system based on a residual neural network, which comprises the following steps of: 1, acquiring the intensity distribution of a distorted OAM light beam to be compensated; 2, constructing a residual neural network model, inputting the intensity distribution of the distorted OAM light beam to be compensated into the trained residual neural network model, and predicting an atmospheric turbulence phase screen; 3, the predicted atmospheric turbulence phase screen is used for compensating an OAM light beam; according to the method, the mapping relation between the focal plane light intensity of the OAM probe light beam of the focal plane and the corresponding atmospheric turbulence phase screen is learned based on the residual neural network, so that the corresponding atmospheric turbulence phase screen is directly predicted according to the distorted ...

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Номер записи: 19
27-06-2023 дата публикации

Optical communication system channel construction method based on deep learning

Номер: CN116346217A
Автор: CHANG HUAN, XIN XIANGJUN, GAO RAN, YAO HAIPENG, YUAN MENGZHU, MA MING, GE HONGWU, HUANG XIN, WU WEI, ZHANG QI, DONG ZE, GUO DONG, PAN XIAOLONG, LI ZHIPEI, ZHOU SITONG, LIU XINYU, ZHU LEI, LI XINYING, WANG FU, ZHANG WENQUAN, WU RUIDE, YAN JINGHAO
Принадлежит:

The invention discloses an optical communication system channel construction method based on deep learning, and belongs to the field of optical communication. The implementation method comprises the steps that a conditional generative adversarial network is adopted to construct an optical communication system channel, a joint loss function containing optimization of multiple sets of loss functions is constructed, and the multiple sets of loss functions comprise mean square error loss, adversarial loss and mean absolute error loss. The conditional generative adversarial network comprises a generator and a discriminator, data distribution at the receiving end and the transmitting end of the optical communication system is captured through the generator, and receiving end new data with the same distribution is generated and used for confusing the discriminator; the discriminator discriminates generated false data and real receiving end data, and when the discriminator reaches Nash equilibrium ...

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Номер записи: 20
15-08-2023 дата публикации

Nonlinear damage equalization method for modular division multiplexing communication system

Номер: CN116599598A
Автор: GAO RAN, XIN XIANGJUN, WANG FEI, YAO HAIPENG, HUANG XIN, GUO DONG, CHANG HUAN, DONG ZE, PAN XIAOLONG, LI ZHIPEI, ZHOU SITONG, ZHU LEI, ZHANG QI, WANG FU, WU RUIDE, YAN JINGHAO
Принадлежит:

The invention discloses a nonlinear damage equalization method for a mode division multiplexing communication system, and belongs to the field of optical fiber communication. The implementation method comprises the following steps that: an OAM-MDM optical fiber communication system sends and receives a pulse amplitude modulation (PAM) signal sequence, and constructs a data feature vector by using a received PAM data symbol; training the equalizer by using the training data set; and inputting the test data set into the AffityNet equalizer to obtain a predicted value of the signal, thereby realizing high-accuracy data recovery. The AffityNet establishes an accurate nonlinear model by using a'small sample ', and has relatively high generalization ability to predict the random feature nonlinearity of the OAM-MDM. And the AffityNet nonlinear equalizer can effectively compensate the random nonlinearity in the OAM-MDM system through a nonlinear model learned by a small sample. According to the ...

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Номер записи: 21
05-05-2023 дата публикации

Optical signal generation method for bit reconstruction

Номер: CN116073910A
Автор: ZHANG QI, XIN XIANGJUN, YAO HAIPENG, XIE RONGZHEN, GAO RAN, TIAN QINGHUA, TIAN FENG, WANG YONGJUN, YANG LEIJING, LI ZHIPEI, WANG FU, JIANG JINKUN, PANG PANDI, CHANG HUAN, GUO DONG, ZHANG WENQUAN, WU RUIDE, HUANG XIN
Принадлежит:

The invention provides a bit reconstruction optical signal generation method, and relates to the field of optical fiber communication systems. The method comprises the following steps: processing a transmitting end signal by using an enhanced correlation coding circuit to obtain a signal with strong correlation; performing constellation mapping according to a partition mapping unit rule to obtain binary information bits after bit reconstruction; and modulating the signal by using optical modulation to obtain a bit-reconstructed optical signal. The optical system signal generated by the method provided by the embodiment of the invention can still realize lower error codes at a receiving end through transmission of an optical fiber channel, so that the transmission reliability of the system is effectively improved, and the purpose of reducing the sending power of the system is achieved.

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Номер записи: 22
18-04-2023 дата публикации

Photon radio frequency signal generation method based on pre-coding and probabilistic shaping joint optimization

Номер: CN115987404A
Автор: GUO DONG, LI XINYING, GAO RAN, XIN XIANGJUN, YAN HENGXIN, BI JIAHAO, PAN XIAOLONG, YU CHAO, ZHANG QI, YAO HAIPENG, DONG ZE, ZHANG WENQUAN, WU RUIDE, HUANG XIN, YAN JINGHAO
Принадлежит:

The invention discloses a method for generating a photon radio frequency signal based on precoding and probability shaping joint optimization, and belongs to the field of communication. The implementation method comprises the following steps of: splitting a binary information sequence into a basic layer sequence and a processing layer sequence; a processing layer sequence is input into a distribution matcher to generate a non-uniform symbol sequence with expected probability distribution, a quadrant bit and an information bit are combined to realize probability shaping, and the information sequence is converted into a PS-QAM signal through QAM modulation; pre-processing the amplitude and phase of the signal by using a pre-coding technology; after the modulation signal and the radio frequency sine wave signal are mixed, a Mach-Zehnder modulator is driven to realize optical carrier suppression modulation on continuous optical waves generated by a distributed feedback laser; optical millimeter ...

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Номер записи: 23
07-04-2023 дата публикации

Cross-group amplifier based on carbon nanotube and optical receiver

Номер: CN115940853A
Автор: YANG LEIJING, XIN XIANGJUN, YAO HAIPENG, ZHANG QI, WANG YONGJUN, TIAN QINGHUA, TIAN FENG, WANG FU, CHEN CONGKE
Принадлежит:

The invention belongs to the technical field of photoelectric devices, and particularly relates to a transimpedance amplifier based on a carbon nanotube and an optical receiver, the transimpedance amplifier comprises a first differential amplification circuit, the inverting input end of the first differential amplification circuit serves as the inverting input end of the transimpedance amplifier and is connected to the output end of a photoelectric detector, the in-phase input end of the first differential amplification circuit is connected with bias voltage Vin1 +, and the in-phase input end of the first differential amplification circuit is connected with the output end of the photoelectric detector; the output end of the second differential amplification circuit inputs amplified voltage signals to the second differential amplification circuit; the inverted input end of the second differential amplification circuit is connected to the output end of the first differential amplification ...

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Номер записи: 24
18-06-2014 дата публикации

Internet of Things preset resource processing method and device

Номер: CN103874051A
Автор: CHEN HAO, ZHANG NI, ZHANG YUNYONG, GONG XUE, YAO HAIPENG
Принадлежит:

The invention provides an Internet of Things preset resource processing method and a device. The method comprises the following steps: when a recovery command sent by an issuing operator server is received, the recovery command is sent to the Internet of Things terminal according to smart card identity in the recovery command, and the recovery command comprises preset data identity; when a recoverable response message back from the Internet of Things terminal is received, a delete command is sent to the Internet of Things terminal, the Internet of Things terminal is indicated to delete the preset data corresponding to the preset data identity from a smart card corresponding to the smart card identity; and when a successful delete response message back from the Internet of Things terminal is received, a card-side successful delete message is sent to the issuing operator server, so as to enable the issuing operator server to delete the preset resources allocated for the preset data stored ...

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Номер записи: 25
04-07-2023 дата публикации

Channel construction method of modular division multiplexing communication system

Номер: CN116389287A
Автор: GAO RAN, XIN XIANGJUN, YAO HAIPENG, XU QI, GE HONGWU, HUANG XIN, WU WEI, GUO DONG, CHANG HUAN, DONG ZE, PAN XIAOLONG, LI ZHIPEI, ZHOU SITONG, LIU XINYU, ZHU LEI, LI XINYING, ZHANG QI, WANG FU, ZHANG WENQUAN, WU RUIDE, YAN JINGHAO
Принадлежит:

The invention discloses a channel construction method of a mode division multiplexing communication system, and belongs to the field of optical fiber communication. The implementation method comprises the following steps: constructing a condition vector based on a sent M-PAM signal sequence, constructing real data based on the M-PAM signal sequence subjected to synchronous processing, and constructing a training data set based on the condition vector and the real data; an AWCGAN network model used for modular division multiplexing system channel construction is constructed, the condition vector is used as an input feature sequence of a generator network model in the network model, and the real data is used as an input feature sequence of a discriminator network model in the network model; training a network model; and inputting the condition vectors in the test set into the trained generator network, outputting to obtain a prediction signal of each signal, and calculating a normalized mean ...

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Номер записи: 26
25-03-2015 дата публикации

Multi-controller load balancing method and system based on distributed-centralized type architecture model in software defined networking

Номер: CN104468390A
Автор: XU FANGMIN, QIU CHAO, ZHAO CHENGLIN, YAO HAIPENG, LI BIN
Принадлежит:

At present, two multi-controller architecture models mainly exist in software defined networking, namely, a distributed multi-controller architecture model and a centralized multi-controller architecture model. The two architecture models have advantages and defects. Even though the distributed multi-controller architecture model can effectively solve the problem of a single controller in performance and reliability, time delay of message transmission among a plurality of distributed controllers is long. Even though the centralized multi-controller architecture model can effectively reduce time delay of message transmission among the controllers, the defects of centralized control still exist. Therefore, the invention provides a distributed-centralized type multi-controller architecture model to avoid the defects of the previous architecture models. On this basis, a multi-controller load balancing method based on the distributed-centralized type architecture model is provided. Therefore ...

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Номер записи: 27
25-07-2023 дата публикации

Computing task unloading method and device in space-air-ground network and electronic equipment

Номер: CN116489683A
Автор: YAO HAIPENG, MIYANAGA YASUSHI, ZHANG QI, HE CI, DONG TAO, TAO YING, SONG GUANGLEI, ZHU XUETIAN
Принадлежит:

The invention provides a computing task unloading method and device in an air-space-ground network and electronic equipment, and relates to the technical field of communication. Firstly, a multi-time-slot optimization problem model of a computing task in the air-space-ground network is converted into a single-time-slot optimization problem model; then, the target neural network model is used for sequentially solving the initial calculation task unloading strategy of each time slot according to the time sequence, and meanwhile, the target neural network model is continuously updated according to the initial calculation task unloading strategy of the current time slot and the single-time-slot optimization problem model; and under the condition of determining that the network parameters of the updated target neural network model pass block chain authentication, taking the initial calculation task unloading strategy as the target calculation task unloading strategy of the current time slot.

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Номер записи: 28
18-08-2023 дата публикации

Passive optical network dynamic slicing method and device based on flow prediction and ONU migration, and storage medium

Номер: CN116614734A
Автор: TIAN QINGHUA, XIN, XIANGJUN, CHEN JUNJIE, YAO HAIPENG, WANG FU, GAO RAN, SUN DANDAN, ZHU LEI, ZHANG QI, TIAN FENG, WANG YONGJUN
Принадлежит:

The invention provides a passive optical network dynamic slicing method and device based on flow prediction and ONU migration and a storage medium, and the method comprises the steps: obtaining the historical flow data of each ONU in a slice, constructing input data based on the historical flow data, inputting the input data into a preset prediction model, and carrying out the prediction of the prediction model. Outputting corresponding output data of each ONU in the prediction period, and determining predicted flow data of the slice in the prediction period based on the output data of each ONU; calculating whether the total bandwidth of the current slice meets the predicted traffic data or not; and if not, calculating the residual bandwidth of other slices in the prediction period, modifying the affiliation relationship between the ONU and the slices, and migrating the ONU corresponding to the overflow flow to the slice with the maximum residual bandwidth. According to the scheme, the ...

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Номер записи: 29
18-04-2023 дата публикации

Coding modulation implementation method for low-complexity probabilistic shaping

Номер: CN115987398A
Автор: ZHANG QI, XIN XIANGJUN, JIANG JINKUN, YAO HAIPENG, GAO RAN, YU JIANJUN, TIAN FENG, TIAN QINGHUA, YANG LEIJING, WANG YONGJUN, WANG FU, LI ZHIPEI, CHANG HUAN
Принадлежит:

The invention provides a low-complexity probability shaping coded modulation implementation method, and relates to the field of optical fiber communication systems. According to the method, implementation of probability shaping is combined in a modulation process, mapping of uniform bits to expected symbol distribution is realized through three steps of probability subset division, subset weight calculation and shaping frame construction, and meanwhile, the problems of low parallelization degree, serious error code propagation and poor forward error correction code compatibility in a traditional shaping technology are avoided.

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Номер записи: 30
30-06-2023 дата публикации

Unmanned cluster adaptive networking method and device

Номер: CN116367178A
Автор: YAO HAIPENG, ZHUGE PENG, MAI TIANLE, GE HONGWU, XIN XIANGJUN, YUAN WANMAI, WU WEI, ZHANG NI
Принадлежит:

The invention provides an unmanned cluster self-adaptive networking method and device, and relates to the technical field of communication.The method comprises the steps that firstly, a graph structure corresponding to an unmanned cluster under a current time slot is constructed according to the signal-to-noise ratio between unmanned nodes and a link effective value, and then spectral clustering processing is conducted on the graph structure through a fission spectral clustering algorithm; the fission spectral clustering algorithm comprises the following clustering conditions that the number of unmanned nodes in each sub-graph is smaller than or equal to a preset threshold value, and at least one target unmanned node exists in each sub-graph, and the signal-to-noise ratio between the target unmanned node and other unmanned nodes is smaller than a preset signal-to-noise ratio limit value. The clustering condition of the fission spectral clustering algorithm can ensure that a high-performance ...

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Номер записи: 31
04-07-2023 дата публикации

Multiband signal light gain regulation and control device

Номер: CN116388876A
Автор: XIN XIANGJUN, TIAN FENG, YAN CHUANJI, ZHANG QI, YAO HAIPENG, GAO RAN, TIAN QINGHUA, WANG YONGJUN, WANG FU, HUANG XIN, LI ZHIPEI, ZHANG WENQUAN, WU RUIDE
Принадлежит:

The invention provides a multiband signal light gain regulation and control device, and the device comprises a wavelength division multiplexer which is used for receiving multiple paths of signal light; the filter is connected with the wavelength division multiplexer through a single-mode optical fiber; the rare earth ion-doped amplifier assembly comprises a bismuth-doped optical fiber amplifier, a thulium-doped optical fiber amplifier and an erbium-doped optical fiber amplifier; the Raman optical fiber amplifier is connected with the rare earth ion doped amplifier assembly through a single-mode optical fiber; and the wavelength division demultiplexer is connected with the Raman optical fiber amplifier through a single-mode optical fiber. According to the invention, the gain spectrum of the signal light of each frequency band is flatter, so that the error rate of the system when the signal light is used for transmitting information is reduced.

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Номер записи: 32
08-08-2023 дата публикации

Three-dimensional constellation rotation method and device for optical fiber communication system

Номер: CN116566787A
Автор: TIAN FENG, XIN XIANGJUN, GU YU, ZHANG QI, YAO HAIPENG, WANG RUICHUN, GAO RAN, TIAN QINGHUA, WANG FU, HUANG XIN, LI ZHIPEI, ZHANG WENQUAN, WU RUIDE
Принадлежит:

The invention provides a three-dimensional constellation rotation method and device for an optical fiber communication system, and the method comprises the steps: carrying out the three-dimensional constellation mapping of a to-be-transmitted optical fiber communication signal in the optical fiber communication system, and obtaining a constellation point sequence of a three-dimensional space; sequentially performing constellation rotation and constellation interleaving processing on the constellation point sequence to obtain a corresponding target constellation point sequence; and performing up-sampling processing on the target constellation point sequence to generate a modulation signal corresponding to the optical fiber communication signal, so that the modulation signal is transmitted in the optical fiber channel. According to the invention, three-dimensional constellation rotation for the optical fiber communication system can be realized, and the probability of simultaneous information ...

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Номер записи: 33
25-04-2023 дата публикации

Nonlinear equalization method based on deep convolutional neural network

Номер: CN116015474A
Автор: ZHOU SITONG, XIN XIANGJUN, ZHANG QI, GAO RAN, YAO HAIPENG, CHANG HUAN, LIU XINYU, TIAN QINGHUA, TIAN FENG, WANG YONGJUN, LI ZHIPEI, GUO DONG, WANG FU, YU CHAO, CHEN CONGKE
Принадлежит:

The invention belongs to the technical field of optical fiber communication, and particularly relates to a nonlinear equalization method based on a deep convolutional neural network. According to the convolutional neural network designed by the nonlinear equalization method based on the deep convolutional neural network, the dimension reduction effect of the convolutional network on input data is utilized to process a received signal, and a multi-layer full connection layer is introduced to improve the nonlinear fitting capability of the network so as to realize further compensation of system damage; in the network, a cross entropy is calculated as a loss function, the difference between a network prediction result and an actual sending signal is analyzed, an adam optimizer is used for carrying out optimization training on network parameters, and after output convergence of the loss function, a network model is used for carrying out nonlinear compensation and judgment on a transmitted signal ...

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Номер записи: 34
23-05-2023 дата публикации

Intelligent intra-network load balancing method and device based on programmable data plane

Номер: CN116155819A
Автор: YAO HAIPENG, OUYANG TIANHAO, HE WENJI, GE HONGWU, ZHU XUETIAN, HAN BAOLEI, DONG TAO, ZHANG NI, XIN XIANGJUN, WANG FU
Принадлежит:

The invention provides an intelligent intra-network load balancing method and device based on a programmable data plane, and relates to the technical field of communication, the method is applied to a control plane, and global congestion sensing is realized by obtaining the queue depth of each switch in a network system, so that the network congestion sensing efficiency is improved. And determining the port forwarding probability of the target switch by using a reinforcement learning algorithm so as to assist in deciding a data packet forwarding path of the target switch. The reward function value of the reinforcement learning algorithm is inversely proportional to the queue depth difference value and the average queue depth of the switch in the network system, so that the purpose that the worse the load balancing effect in the network is, the less the reward is can be achieved, and the action output by the intelligent agent develops towards the directions of reducing congestion and enhancing ...

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Номер записи: 35
18-07-2023 дата публикации

Time synchronization method and system for low earth orbit satellites oriented to satellite-ground fusion networking

Номер: CN116455455A
Автор: XU YUE, YIN JIE, DONG TAO, LIU ZHIHUI, YAO HAIPENG, WANG FU
Принадлежит:

The invention relates to a time synchronization method and system for a low earth orbit satellite for satellite-ground fusion networking. The method sequentially comprises a clock initialization mode and a search switching mode. The clock initialization mode comprises the following steps: starting time synchronization equipment by a current low-orbit satellite, sequentially judging from a plurality of clock sources according to a preset threshold value and a preset priority, selecting an available clock with the highest priority to perform time synchronization on the time synchronization equipment in all satellites, and finishing starting of the current low-orbit satellite; the searching switching mode comprises the steps that the current low-orbit satellite continuously judges the available clock with the highest priority in the multiple clock sources according to a preset threshold value and switches the available clock with the highest priority to the available clock with the highest ...

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Номер записи: 36
25-07-2023 дата публикации

Balancing method for high-speed optical communication system

Номер: CN116488970A
Автор: ZHANG QI, XIN XIANGJUN, YAO HAIPENG, YANG RUI, JIANG JINKUN, GAO RAN, TIAN QINGHUA, TIAN FENG, WANG YONGJUN, YANG LEIJING, LI ZHIPEI, WANG FU, WANG XISHUO, CHANG HUAN, GUO DONG
Принадлежит:

The invention provides a high-speed optical communication system equalization method, which comprises the following steps of: constructing a neural network equalizer based on Volterra series, enhancing a combined neural network by adopting cross-correlation learning, and combining linear compensation and nonlinear compensation, so that the network does not need an additional linear compensation module any more, and the overall compensation capability of the network is enhanced; through an additional enhanced cross-correlation learning layer, the neural network can better learn second-order and third-order cross-correlation items of an input signal, and the compensation capability of the neural network to system nonlinearity is enhanced. Learning a high-order cross-correlation term of the input signal from the low-order self-correlation input signal through a high-order full-connection layer; and meanwhile, a clustering algorithm is used at the dense weight part in the network, so that the ...

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Номер записи: 37
13-06-2023 дата публикации

Controller load balancing method based on evolutionary game

Номер: CN116261177A
Автор: GUO DONG, XIN XIANGJUN, ZHANG QI, YAO HAIPENG, GAO RAN, JI SHUFANG, MAI TIANLE, WANG ZUNLIANG, CHEN CONGKE
Принадлежит:

The invention relates to the technical field of wireless short-distance communication of the Internet of Vehicles, in particular to a controller load balancing method based on evolutionary game, which comprises the following steps: step 1, vehicles in a multi-selection area M randomly select unmanned aerial vehicles U1 and U2 respectively, and determine an initial network state; step 2, calculating the income of each vehicle according to the unmanned aerial vehicle selected by each vehicle in the multi-selection area M; 3, calculating the average income of all vehicles in the multi-selection area M according to the income of each vehicle and the corresponding network state; 4, whether the income increment of each vehicle is larger than the switching cost or not is judged, if yes, the vehicle is switched to another unmanned aerial vehicle according to the switching probability, and if not, switching is not conducted; and step 5, judging whether the network state after the switching of the ...

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Номер записи: 38
11-08-2023 дата публикации

Error correction coding and probability shaping method applied to short-distance optical fiber communication

Номер: CN116582221A
Автор: XIN XIANGJUN, TIAN QINGHUA, LIU ZIQI, ZHANG YUQING, YAO HAIPENG, GAO RAN, WANG FU, LI ZHIPEI, TIAN FENG, DONG ZE, ZHU LEI, ZHANG QI
Принадлежит:

The invention relates to an error correction coding and probability shaping method applied to short-distance optical fiber communication, which comprises the following steps of: carrying out first coding on information source information based on a step code of hard decision, and carrying out second coding on the information source information subjected to the first coding based on a Hamming code of soft decision; and dividing the information source information after the second coding, and performing probability shaping on the divided information source information based on enumeration ball mapping or applying the divided information source information to high-order modulation. The method has the beneficial effects that the probability shaping technology can be adopted in the technical scheme, the probability of symbol occurrence is adjusted, and the average power of the signal is reduced. The maximum capacity of a communication channel can be realized by optimizing probability distribution ...

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Номер записи: 39
23-04-2014 дата публикации

Method and system for migrating user information among internet of things equipment

Номер: CN103747104A
Автор: CHEN HAO, ZHANG NI, ZHANG YUNYONG, GONG XUE, YAO HAIPENG
Принадлежит:

The invention provides a method and a system for migrating user information among internet of things equipment. The method comprises the steps of deleting first user information in an embedded universal integrated circuit card eUICC of first equipment after a remote management platform receives trigger information of migrating the first user information from the first equipment to second equipment; after the first user information is successfully deleted, encrypting the first user information again by the remote management platform, and downloading the first user information which is re-encrypted to an eUICC of the second equipment; updating the eUICC corresponding to the first user information into the eUICC of the second equipment by the remote management platform. According to the system and the method, the interoperability of the user information in the eUICCs of different internet of things equipment is realized.

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Номер записи: 40
16-06-2010 дата публикации

Signal modulating method and device as well as signal modulating system

Номер: CN0101741805A
Автор: FENG SHULAN, LI ZHUO, LIANG BING, LIU JINNAN, YAO HAIPENG, ZHANG LUYONG, ZHOU RAN, SHULAN FENG, ZHUO LI, BING LIANG, JINNAN LIU, HAIPENG YAO, LUYONG ZHANG, RAN ZHOU
Принадлежит:

The embodiment of the invention relates to signal modulating method and device as well as a signal modulating system. The method comprises the following steps of: obtaining initial phases which respectively correspond to all subcarriers according to the distance between a transmitter and a receiver and respective frequency of all the subcarriers; modulating all the subcarriers by the initial phases which respectively correspond to all the subcarriers and generating transmitting signals. The signal modulating method and device as well as the signal modulating system obtain the initial phases of a plurality of subcarriers according to the distance between the transmitter and the receiver so that the phases of all the subcarriers, which reach the receiving end, are same, thereby reducing signal distortion and amplitude fading caused by the inconsistency of the phases of all the subcarriers.

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Номер записи: 41