基于电压图方法研究QC-LDPC码的围长问题  

Study on the girth problem of QC-LDPC codes based on voltage graph method

作　　者：王成东 游龙 WANG Chengdong;YOU Long(College of Mathematics and Statistics,Chongqing Jiaotong University,Chongqing,400074 China)

机构地区：[1]重庆交通大学数学与统计学院,重庆400074

出　　处：《通信与信息技术》2024年第1期60-62,66,共4页Communication & Information Technology

摘　　要：针对围长影响准循环低密度奇偶校验码译码性能的问题,提出了基于电压图方法研究QC-LDPC码围长。该法简化研究围长的计算,并通过电压图的生成树边和非生成树边不同赋值,证明出提升图围长[g]范围的影响。In order to solve the problem that girth affects the decoding performance of quasi-cyclic low-density parity-check codes,a voltage diagram method is proposed to study the girth of QC-LDPC codes.This method simplifies the calculation of the girth of the study,and proves the influence of increasing the girth range of the voltage graph by different assignment of the generating and non generating edges of the voltage graph.

关 键 词：QC-LDPC码 电压图 生成树 围长 

分 类 号：TN911.22[电子电信—通信与信息系统]