Huawei Technologies Co., Limited

Zte Corporation

Jinshan Wang

Liming Fang

Yanbin Sun

Jianfei Liu

Yanbo Zhao

Chao Wang

Yumeng Yang

An echo cancellation method and a transceiver to reduce dependence of a system on an enob of a DAC, and improve performance of echo cancellation. The transceiver includes an echo cancellation apparatus, a transmit link, a receive link, and a hybrid circuit. The transmit link and the receive link are coupled to a transmission line by using the hybrid circuit. The echo cancellation apparatus includes a first signal converter, a slicer, a first subtractor, a second digital-to-analog converter, a second subtractor, and a third subtractor.

Echo cancellation method and transceiver

This application provides a narrowband interference isolation method and a communication apparatus. An example method includes: determining a parameter of a narrowband interference signal; determining a coefficient of a first filter based on the parameter of the narrowband interference signal, wherein the first filter is located at a receive end of a master communication device, and the coefficient of the first filter is for filtering out the narrowband interference signal; and sending the parameter of the narrowband interference signal or the coefficient of the first filter to M slave communication devices using an Ethernet operation, administration, and maintenance (OAM) frame, wherein the master communication device is connected to the M slave communication devices, M≥1, and M is an integer.

Narrowband interference isolation method and communication apparatus

A decoding method for LDPC codes based on BP algorithm, includes initializing LLR (q) with the received LDPC bit stream; updating the check node LLR (r) and variable node LLR (q): after updating the LLR (r) corresponding to nonzero elements in each row in check matrix H in each iteration; immediately updating the LLR (q) corresponding to all the nonzero elements in the column which has a nonzero element in the row, and repeating the updating row by row; updating LLR (q) on the basis of LLR (r); terminating decoding process if maximum number of allowed iterations is reached or the correct result obtained and outputting the final decoding result x; The method of the present invention may accelerate the decoding convergence, and reduce the number of iterations to increase the throughput, further reduce the power consumption and silicon area of decoding apparatus possible if LLR (q) is properly approximated.

Decoding method for LDPC code based on BP arithmetic

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Shenzhen, China

Jinshan Wang