高码率下的规则准循环LDPC码构造方法  

Construction of the High—rate Regular Quasi—cyclic LDPC Codes

作　　者：孟奇 赵加祥[1] 徐微[2] 李亮[3] Meng Qi;Zhao Jjiaxiang;Xu Wei;Li Liang(College of Electronic Information and Optical Engineering,Nankai Universily,Tianjin 300350,China;School of Electronics and Information Engineering,Tianjin Polytechnic University,Tianjin 300387,China;IP Technology Research Department,Huarwei Technologies Co Ltd,Shenzhen 518116,China)

机构地区：[1]南开大学电子信息与光学工程学院,天津300350 [2]天津工业大学电子与信息工程学院,天津300387 [3]华为技术有限公司IP技术研究部门,广东深圳518116

出　　处：《南开大学学报（自然科学版）》2021年第1期73-79,共7页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(61501324)。

摘　　要：介绍了一种基于有限几何LDPC码构造高码率规则准循环LDPC码的方法.首先,将一个欧式几何LDPC码分解成由其子矩阵构成的矩阵.其中每个子矩阵具有循环结构从而使其具有准循环结构.然后,利用这种结构构造了一个辅助矩阵来去除其中的6环结构.按照这种方法构造了3种码长适中,码率分别为0.875、0.91和0.92的规则准循环LDPC码.仿真结果中,这些码的误码性能表明此方法有较好的效果.A scheme to generate the high-rate regular quasi-cyclic low-density parity-check(QC-LD-PC)codes is developed on the finite geometry LDPC codes.First,an Euclidean geometric LDPC code is decomposed into a matrix composed of its sub-matrices.Each of these sub-matrices has a cyclic structure so that it has a quasi-cyclic structure.Then,using this structure,an auxiliary matrix is constructed to re-move the 6-cyclic.Three regular QC-LDPC codes with code rates being 0.875,0.91 and 0.92 with mod-erate code lengths are constructed with this scheme.The performances of these codes dermonstrate the ef-fectiveness of the proposed scheme.

关 键 词：高码率 规则 准循环 低密度奇偶校验码 

分 类 号：TN911[电子电信—通信与信息系统]