重庆邮电大学学报（自然科学版）2017，Vol.29Issue(3)：341-345,5.DOI:10.3979/j.issn.1673-825X.2017.03.009
基于Hoey序列的QC-LDPC码构造方法
Novel construction method of QC-LDPC codes based on Hoey sequences
摘要
Abstract
A novel construction method of quasi-cyclic low-density parity-check(QC-LDPC) codes with girth of at least eight and the column weight of the constructed QC-LDPC code is 3 based on Hoey sequence is proposed.The novel construction method can avoid short-girth and has better error-correction performance.Moreover,the code length and the code rate can be adjusted by selecting different parameters.Firstly,the girth of at least eight in the proposed novel construction method is proved,and then the simulation model of communication system is established by Matlab program.And based on the model,the QC-LDPC (900,452) code constructed by the proposed construction method is emulated and analyzed.The simulation environments are addictive white Gaussian noise(AWGN) channel,binary phase shift keying(BPSK) modulation method and the decoding algorithm of the sum product algorithm(SPA).The simulation results show when the bit error rate (BER) is the same,the net coding gain(NCG) of the QC-LDPC(900,452) code is more than those of the QC-LDPC (896,452) code constructed by the construction method based on the arithmetic progression sequence(APS) and the QCLDPC(900,453) code constructed by the construction method based on the greatest common divisor(GCD).Furthermore,all the codes have the same code rate of 50％.关键词
准循环低密度奇偶校验(QC-LDPC)码/Hoey序列/误码率(BER)/净编码增益(NCG)Key words
quasi-cyclic low-density parity-check (QC-LDPC) code/Hoey sequence/bit error rate (BER)/net coding gain (NCG)分类
信息技术与安全科学引用本文复制引用
朱继华,梁梦琪,胡潇月,郭乔,袁建国..基于Hoey序列的QC-LDPC码构造方法[J].重庆邮电大学学报（自然科学版）,2017,29(3):341-345,5.基金项目
国家自然科学基金(61472464) （61472464）
重庆市基础与前沿研究计划项目(cste2015jcyjA0554) （cste2015jcyjA0554）
2016年重庆邮电大学大学生科研训练计划项目(A2016-61)The National Natural Science Foundation of China (61472464) （A2016-61）
The Natural Science Foundation of Chongqing Science and Technology Commission (cstc2015jcyjA0554) （cstc2015jcyjA0554）
The Undergraduate Science Research Training Project for Chongqing University of Posts and Telecommunications in 2016(A2016-61). （A2016-61）
