公开(公告)号：US20140093255A1

公开(公告)日：2014-04-03

申请号：US13845575

申请日：2013-03-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Liu ,  Liangchuan Li

IPC: H04B10/61

CPC classification number: H04B10/6163 ,  H04B10/25133 ,  H04B10/2543 ,  H04B10/6161

Abstract: Embodiments of the present invention disclose an optical signal compensation device, where, a nonlinear compensation module in the optical signal compensation device adopts a new nonlinear compensation algorithm to perform nonlinear compensation on an optical signal, and during the process of performing the nonlinear compensation, it is no longer required to look up a table. Technical solutions provided in the embodiments of the present invention can effectively increase the processing speed of the nonlinear compensation, thereby reducing the overall processing delay of an optical signal compensation system.

Abstract translation: 本发明的实施例公开了一种光信号补偿装置，其中，光信号补偿装置中的非线性补偿模块采用新的非线性补偿算法对光信号执行非线性补偿，并且在执行非线性补偿的过程中 不再需要查找一张桌子。 在本发明的实施例中提供的技术方案可以有效地提高非线性补偿的处理速度，从而减少光信号补偿系统的整体处理延迟。

公开(公告)号：US20130058649A1

公开(公告)日：2013-03-07

申请号：US13664134

申请日：2012-10-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liangchuan Li ,  Ling Liu

IPC: H04J14/00

CPC classification number: H04B10/2572

Abstract: A method for processing optical signals includes performing frequency mixing, photoelectric detection, analog/digital conversion, and dispersion compensation on received input optical signals. First-path polarization multiplexing optical signals and second-path polarization multiplexing optical signals. An initialization update process is performed on filter coefficients. Polarization compensation is performed on the first-path polarization multiplexing optical signals and the second-path polarization multiplexing optical signals by using the filter coefficients on which the initialization update is performed to obtain initialized x-path optical signals and initialized y-path optical signals. Preset x-path training sequences and y-path training sequences are synchronized by using the initialized x-path optical signals and the initialized y-path optical signals. If a synchronization result indicates that polarization cross occurs, the polarization cross is rectified.

Abstract translation: 一种处理光信号的方法包括对接收到的输入光信号执行频率混合，光电检测，模/数转换和色散补偿。 第一路径偏振复用光信号和第二路径偏振复用光信号。 对滤波器系数执行初始化更新处理。 通过使用执行初始化更新的滤波器系数来获得初始化的x路光信号和初始化的y路光信号，对第一路径偏振多路复用光信号和第二路径偏振复用光信号进行极化补偿。 通过使用初始化的x路径光信号和初始化的y路径光信号来同步预置x路径训练序列和y路径训练序列。 如果同步结果表明发生极化交叉，则会纠正极化交叉。

公开(公告)号：US12119933B2

公开(公告)日：2024-10-15

申请号：US17556756

申请日：2021-12-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ling Liu ,  Bin Li ,  Jiaqi Gu ,  Hui Shen

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/13

CPC classification number: H04L1/0057 ,  H03M13/13 ,  H04L1/0041 ,  H04L1/0045

Abstract: Embodiments of the present disclosure disclose obtaining to-be-encoded first information that includes first and second information bit sets. The bits included in the first information bit set are obtained through decoding by a plurality of terminal devices. The bits included in the second information bit set are able to be obtained through decoding by some of the plurality of terminal devices. Polar encoding is first performed on the first information bit set to obtain first encoded information. Polar encoding is then performed on the second information bit set based on the first encoded information to obtain second encoded information.

公开(公告)号：US11558068B2

公开(公告)日：2023-01-17

申请号：US17322451

申请日：2021-05-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hui Shen ,  Bin Li ,  Ling Liu ,  Jiaqi Gu

IPC: H03M13/00 ,  H03M13/29 ,  H03M13/09 ,  H03M13/13

Abstract: A method and an apparatus for encoding a polar code concatenated with a cyclic redundancy check (CRC), where M bits are selected from K bits in the sequence to perform CRC encoding. The M bits are determined based on reliability of K polarized subchannels on which the K bits are placed and/or row weights of K rows, in a first matrix, corresponding to the K polarized subchannels on which the K bits are placed. The first matrix is an encoding matrix of polar encoding. Polar encoding is performed on the K bits and obtained CRC check bits. An encoded codeword is output.

公开(公告)号：US11342940B2

公开(公告)日：2022-05-24

申请号：US17009920

申请日：2020-09-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiyu Xiao ,  Ling Liu ,  Liangchuan Li

IPC: H03M13/39 ,  H03M13/25 ,  H04L1/00 ,  H04L25/03 ,  H03M13/41 ,  H03M13/17 ,  H03M13/27

Abstract: A data processing method includes performing first equalization processing on a data stream that comprises a plurality of sub-data stream segments, performing segment de-interleaving on the data stream, separately performing first forward error correction (FEC) decoding on each sub-data stream segment in a data stream, performing, according to an equalization termination state of each sub-data stream segment, second equalization processing on each sub-data stream segment, performing second FEC decoding on the data stream, and outputting the data stream obtained according to the second FEC decoding in response to a preset iteration termination condition being met, or performing, in response to the preset iteration termination condition not being met, according to the equalization termination state of each sub-data stream segment obtained according to the first equalization, the second equalization processing on each sub-data stream segment obtained according to the second FEC decoding.

公开(公告)号：US10193713B2

公开(公告)日：2019-01-29

申请号：US15270286

申请日：2016-09-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liangchuan Li ,  Ling Liu

IPC: H04B7/06 ,  H04L25/03

Abstract: A method for sending and receiving a signal is disclosed, and a corresponding device and system. The method includes performing constellation mapping on a data stream to obtain a mapped signal, and performing pre-filtering on the mapped signal to convert the mapped signal into a narrowband signal filtered signal. The pre-filtering is finite impulse response filtering. A bandwidth of the narrowband signal filtered signal is less than bandwidth of the mapped signal, and the narrowband signal filtered signal is a baud rate signal. The method also includes performing waveform forming according to the narrowband signal filtered signal to obtain a shaped signal, and performing digital-to-analog conversion on the shaped signal to convert a shaped second signal into an analog signal, and sending the analog signal.