重庆邮电大学学报（自然科学版）2017，Vol.29Issue(4)：474-479,6.DOI:10.3979/j.issn.1673-825X.2017.04.008
基于QC-LDPC码的联合信源信道编码研究
Research on joint source and channel coding based on QC-LDPC code
摘要
Abstract
In this paper, quasi cyclic low density parity check (QC-LDPC) codes based on Euclidean geometry are applied into the JSCC system.Since there are special links between the source code and the channel code in the JSCC system, it is difficult to construct two QC-LDPC codes which can be applied into the JSCC system.However, at least we can use a QC-LDPC code as the channel code in the JSCC system.Simulation results show that the performance of the JSCC system based on double QC-LDPC codes is significantly improved compared to that of the JSCC system based on the double random LDPC code, and the decoding iteration number of the former is obviously less than that of the latter, and thus improves the decoding effectively.The JSCC system just only using QC-LDPC code as the channel code performs better than that based on double random LDPC codes, and it also requires less iteration.关键词
联合信源信道编码/低密度奇偶校验码/准循环低密度奇偶校验码Key words
joint source and channel coding/low density parity check code/QC-LDPC code分类
信息技术与安全科学引用本文复制引用
王海丽,黎勇..基于QC-LDPC码的联合信源信道编码研究[J].重庆邮电大学学报（自然科学版）,2017,29(4):474-479,6.基金项目
国家自然科学基金(61401050) （61401050）
重庆市教委科技项目(KJ1400425)The National Natural Science Foundation of China (61401050) （KJ1400425）
The Science and Technology Project of Chongqing Municipal Education Commission of China (KJ1400425) （KJ1400425）
