电讯技术2025，Vol.65Issue(5)：793-799,7.DOI:10.20079/j.issn.1001-893x.240302001
一种基于Hoey序列的8环QC-LDPC码构造方法
A Construction Method of Girth-8 QC-LDPC Codes Based on Hoey Sequence
摘要
Abstract
In order to solve the problems of short-loop and poor error correction performance of quasi-cyclic low-density parity-check(QC-LDPC)codes,a novel QC-LDPC code construction method based on Hoey sequence(HS)is proposed.In this method,some elements are selected from the Hoey sequence to form a set with an increasing trend,the exponential matrix is constructed by simple four-rule operations,the parity matrix with a circumference length of at least 8 is expanded,and the code rate and code length can be flexibly changed by changing the number of selected elements in the Hoey sequence.The simulation results show that under the same conditions,when the bit error rate(BER)is 10-6,the net coding gain of the HS-QC-LDPC(1 200,600)code constructed by the proposed method with a code rate of 0.5 is at least 0.12 dB higher than that of the compared code types,and when the BER is 10-7,the net coding gain of the HS-QC-LDPC(3 600,2 400)code constructed by the proposed method with a code rate of 0.67 is at least 0.06 dB higher than that of the compared code forms.In addition,the complexity of the constructed verification matrix is linearly related to the product of the number of rows and columns of the exponential matrix,which has a lower complexity than other comparative literatures.关键词
准循环低密度奇偶校验(QC-LDPC)码/构造方法/Hoey序列/低复杂度Key words
quasi-cyclic low-density parity check(QC-LDPC)code/construction method/Hoey sequence/low complexity分类
信息技术与安全科学引用本文复制引用
袁建国,宋万闯..一种基于Hoey序列的8环QC-LDPC码构造方法[J].电讯技术,2025,65(5):793-799,7.基金项目
国家自然科学基金资助项目(U21A20447,61971079) （U21A20447,61971079）
