码长码率变化的QC-LDPC码  

QC-LDPC Code with Variable Length and Rate

作　　者：薛辉 Xue Hui(Jiu Hua Communication Equipment Factory,Fujian Xiamen 361000)

机构地区：[1]厦门九华通信设备厂,福建厦门361000

出　　处：《电子质量》2022年第5期1-4,35,共5页Electronics Quality

摘　　要：提出了一种构造准循环低密度奇偶校验(QC-LDPC)码的方法,它利用一个环长(girth)较大的QC-LDPC码作为基准码,对其校验矩阵中的循环置换矩阵进行压缩和行合并,从而构造出不同码长码率的码字。分析和仿真结果表明,采用这种方法构造出的码字比采用传统的PEG(progressiveedge-growth)算法构造出的码字具有优越的误码率性能和较低的实现复杂度。A method for the construction of quasi-cyclic LDPC(QC-LDPC)codes was proposed,which used a QC-LDPC code with large girth as mother code.By compressing and row combining circulant permutation matrices of the mother code,Variable Length and rate QC-LDPC codes would be generated.Analysis and simulation results show that these LDPC codes have good performance and low complexity compared with the traditional PEG(progressive edge-growth)algorithm.

关 键 词：低密度奇偶校验码 循环置换矩阵 压缩 行合并 

分 类 号：TN911.22[电子电信—通信与信息系统]