Design of two-dimensional spatially coupled LDPC codes for combating burst erasures  

作　　者：刘洋 HE Jinglin WANG Bin ZHANG Yuzhi LIU Yang(College of Communication and Information Engineering,Xi’an University of Science and Technology,Xi’an 710054,P.R.China;Xi’an Key Laboratory of Network Convergence Communication,Xi’an University of Science and Technology,Xi’an 710054,P.R.China)

机构地区：[1]College of Communication and Information Engineering,Xi’an University of Science and Technology,Xi’an 710054,P.R.China [2]Xi’an Key Laboratory of Network Convergence Communication,Xi’an University of Science and Technology,Xi’an 710054,P.R.China

出　　处：《High Technology Letters》2023年第3期288-294,共7页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.U19B2015,62271386,61801371).

摘　　要：Spatially-coupled low-density parity-check(SC-LDPC)codes are prominent candidates for fu-ture communication standards due to their‘threshold saturation’properties.However,when facing burst erasures,the decoding process will stop and the decoding performances will dramatically de-grade.To improve the ability of burst erasure corrections,this paper proposes a two-dimensional SC-LDPC(2D-SC-LDPC)codes constructed by parallelly connecting two asymmetric SC-LDPC coupled chains for resistance to burst erasures.Density evolution algorithm is presented to evaluate the as-ymptotic performances against burst erasures,by which the maximum correctable burst erasure length can be computed.The analysis results show that the maximum correctable burst erasure lengths of the proposed 2D-SC-LDPC codes are much larger than the SC-LDPC codes and the asym-metric SC-LDPC codes.Finite-length performance simulation results of the 2D-SC-LDPC codes over the burst erasure channel confirm the excellent asymptotic performances.

关 键 词：burst erasure channel SC-LDPC code density evolution decoding performance 

分 类 号：TN911.22[电子电信—通信与信息系统]