光通信研究Issue(3)：24-26,3.DOI:10.13756/j.gtxyj.2014.03.008
光通信系统中基于等差矩阵的QC-LDPC码
A novel method for constructing equideviate matrix-based QC-LDPC codes in optical communication systems
摘要
Abstract
On the basis of the property and features of equideviate matrixes,a novel method for constructing Quasi-Cyclic Low-Density Parity-Check (QC-LDPC)codes is presented in this paper.The LDPC codes constructed in this method are easy for ef-fective encoding and decoding,have good girth properties and can avoid the girth-4 effectively,which prevents the generated codes from short cycle interference.Furthermore,it can save the storage space in terms of hardware implementation.The sim-ulation results show that when the bit error rate reaches 10-7 ,the net coding gain of the high code-rate QC-LDPC (3780, 3542)constructed this way is improved by about 2.1 dB as compared with that of the RS (255,239)code in ITU-T G.975, proving that the code has a better error correcting performance,and by 0.35 dB as compared with that of regular QC-LDPC (4221,3956)code.关键词
等差矩阵/准循环低密度奇偶校验码/净编码增益Key words
equideviate matrix/QC-LDPC codes/net coding gain分类
信息技术与安全科学引用本文复制引用
黄胜,田方方,袁建国,田凯..光通信系统中基于等差矩阵的QC-LDPC码[J].光通信研究,2014,(3):24-26,3.基金项目
国家自然科学基金资助项目(61371096,61071117,61171158,61275077) （61371096,61071117,61171158,61275077）
重庆市自然科学基金资助项目(cstc2013jcyjA40052, cstc2012jjA40060) （cstc2013jcyjA40052, cstc2012jjA40060）
重庆市教委资助项目(KJ110519,KJ110527) （KJ110519,KJ110527）
