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：US20250168542A1

公开(公告)日：2025-05-22

申请号：US19027554

申请日：2025-01-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Liangchuan Li ,  Gengchen Liu ,  Yuanda Huang

IPC: H04Q11/00

Abstract: Embodiments of this application disclose a data processing method and a related apparatus. An optical line terminal OLT receives a data frame from a first optical network unit ONU, where the data frame carries service data. The OLT determines a traffic type corresponding to the service data, where the traffic type includes east-west traffic or north-south traffic. The OLT performs a corresponding operation on the data frame in a processing manner corresponding to the traffic type, where a processing manner corresponding to the east-west traffic is different from a processing manner corresponding to the north-south traffic.

公开(公告)号：US11082135B2

公开(公告)日：2021-08-03

申请号：US16230891

申请日：2018-12-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Michael Zarubinsky ,  Doron Cohen ,  Qingsong Xue ,  Dori Gidron ,  Ling Liu ,  Changsong Xie ,  Liangchuan Li ,  Ming Chen

IPC: H04B10/69 ,  H04L25/03 ,  H04B7/0413 ,  H04L27/26

Abstract: The present disclosure relates to an apparatus and method of processing a digital signal, wherein an input signal is transformed into the frequency domain by applying a fast Fourier transformation (FFT) processing to obtain a transformed input signal. Positive and negative frequency components of the transformed input signal are separated and respective ones of the separated positive and negative frequency components are separately processed by respective digital filtering to obtain filtered frequency components. The filtered frequency components are combined in the frequency domain using a down-sampling operation for down-sampling the filtered frequency components from an input number of samples per symbol to a different output number of samples per symbol, and the combined output components are converted into the time domain by applying an IFFT processing.

公开(公告)号：US11012267B2

公开(公告)日：2021-05-18

申请号：US16393885

申请日：2019-04-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuanda Huang ,  Xie Wang ,  Liangchuan Li

IPC: H04L27/01 ,  H04L25/03 ,  H04B7/06 ,  H04B7/08 ,  H04B7/0413 ,  H04B1/7103 ,  H04W56/00 ,  H04B10/25 ,  H04J11/00

Abstract: A receiver in the present disclosure includes: a first input end, N first output ends, N baseband signal recovery modules, and a multiple-input multiple-output equalization module. Each baseband signal recovery module includes two second output ends; one second output end of each baseband signal recovery module is configured to output a baseband signal; and the other second output end is configured to output data enabling control information. The multiple-input multiple-output equalization module is configured to: control, based on N pieces of data enabling control information, a time sequence of N baseband signals entering the multiple-input multiple-output equalization module for equalization filtering processing, and perform equalization filtering processing on the N baseband signals by using N transmitters as references to obtain recovered data of the N transmitters. According to the embodiments of the present disclosure, asynchronous multi-transmitter data is received.

公开(公告)号：US10805032B2

公开(公告)日：2020-10-13

申请号：US16435548

申请日：2019-06-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xie Wang ,  Yuanda Huang ,  Liangchuan Li

IPC: H04J14/00 ,  H04B10/2507 ,  H04B10/00

Abstract: Embodiments of this application provide a data transmission method, a terminal device, and a network side device. Encoding, by a terminal device, a first identifier by using a first code word which is selected from at least one code word by the terminal device; sending, by the terminal device, the encoded first identifier to a network side device; receiving, by the terminal device, a second identifier sent by the network side device; decoding, by the terminal device, the second identifier by using the first code word; when the decoded second identifier is the same as the first identifier, encoding, by the terminal device, subsequent data by using the first code word; and sending, by the terminal device, the encoded subsequent data to the network side device.

公开(公告)号：US10374722B2

公开(公告)日：2019-08-06

申请号：US15982930

申请日：2018-05-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuanda Huang ,  Liangchuan Li

IPC: H04B10/516 ,  H04B7/216 ,  H04B10/69 ,  H04B10/50 ,  H04L27/34 ,  H04B1/7087 ,  H04B10/2507 ,  H04L27/36 ,  H04B10/54 ,  H04J14/00 ,  H04B10/2569

Abstract: According to a signal transmitting method, a signal receiving method, and a related device and system, a generated single-wavelength optical carrier may be split into N subcarriers with a same wavelength by using a splitting device, corresponding data modulation and corresponding amplitude spread spectrum modulation are performed on the N subcarriers by using N spreading codes and N low-speed data signals obtained by deserializing a received high-speed data signal, to obtain N spread spectrum modulation signals, and the N spread spectrum modulation signals are combined and output. A multicarrier generation apparatus or the like having a relatively complex structure does not need to be used for optical carrier splitting, and spectrum spreading does not need to be performed in a phase modulation manner in which a plurality of delay units or controllable phase units are required.

公开(公告)号：US20190123834A1

公开(公告)日：2019-04-25

申请号：US16230891

申请日：2018-12-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Michael Zarubinsky ,  Doron Cohen ,  Qingsong Xue ,  Dori Gidron ,  Ling Liu ,  Changsong Xie ,  Liangchuan Li ,  Ming Chen

IPC: H04B10/69 ,  H04L25/03 ,  H04B7/0413 ,  H04L27/26

Abstract: The present disclosure relates to an apparatus and method of processing a digital signal, wherein an input signal is transformed into the frequency domain by applying a fast Fourier transformation (FFT) processing to obtain a transformed input signal. Positive and negative frequency components of the transformed input signal are separated and respective ones of the separated positive and negative frequency components are separately processed by respective digital filtering to obtain filtered frequency components. The filtered frequency components are combined in the frequency domain using a down-sampling operation for down-sampling the filtered frequency components from an input number of samples per symbol to a different output number of samples per symbol, and the combined output components are converted into the time domain by applying an IFFT processing.

公开(公告)号：US20180248565A1

公开(公告)日：2018-08-30

申请号：US15965250

申请日：2018-04-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhiyu Xiao ,  Ling Liu ,  Liangchuan Li

IPC: H03M13/17 ,  H03M13/27

CPC classification number: H03M13/17 ,  H03M13/27 ,  H03M13/2778 ,  H04L1/005 ,  H04L1/0071

Abstract: An embodiment method includes: performing balancing processing on a data stream that includes a plurality of sub-data stream segments, and performing segment de-interleaving on a data stream obtained after the balancing processing. The method further includes separately performing forward error correction (FEC) decoding on each sub-data stream segment in a data stream obtained after the segment de-interleaving. The method further includes performing, according to a balancing termination state of each sub-data stream segment obtained after previous balancing processing, balancing processing on each sub-data stream segment obtained after the FEC decoding, and performing FEC decoding on the data stream obtained after balancing processing is performed on each sub-data stream segment. When it is determined that a preset iteration termination condition is met, the method includes outputting the data stream obtained after the FEC decoding.

公开(公告)号：US09432226B2

公开(公告)日：2016-08-30

申请号：US14922861

申请日：2015-10-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuanyuan Fang ,  Liangchuan Li

IPC: H04L25/03 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04L25/0391 ,  H04L5/0048 ,  H04L25/0256 ,  H04L25/03006

Abstract: Embodiments of the present invention provide a channel equalization method and apparatus, and a receiver. The method includes: acquiring a channel transfer matrix according to a training sequence sent by a transmit end; acquiring an amplitude response matrix of the channel transfer matrix, and acquiring, according to the amplitude response matrix, a window length of a sliding window that is required for performing noise filtering on the channel transfer matrix; and performing noise filtering on the channel transfer matrix according to the window length of the sliding window, and performing, according to a channel transfer matrix that is obtained by means of noise filtering, channel equalization on a data payload sent by the transmit end. The channel equalization method and apparatus, and a receiver provided in the embodiments of the present invention may implement adaptive channel equalization.

Abstract translation: 本发明的实施例提供一种信道均衡方法和装置以及接收机。 该方法包括：根据由发送端发送的训练序列获取信道传送矩阵; 获取所述信道传输矩阵的幅度响应矩阵，并且根据所述幅度响应矩阵获取所述信道传输矩阵上执行噪声滤波所需的滑动窗口的窗口长度; 以及根据所述滑动窗口的窗口长度对所述信道传送矩阵执行噪声滤波，并且根据通过噪声滤波获得的信道传输矩阵对由所述发送端发送的数据有效载荷进行信道均衡。 在本发明的实施例中提供的信道均衡方法和装置以及接收机可以实现自适应信道均衡。