电讯技术2016，Vol.56Issue(12)：1376-1380,5.DOI:10.3969/j.issn.1001-893x.2016.12.013
基本陷阱集优化的IRA-LDPC码设计
Construction of IRA-LDPC Codes with Elementary Trapping Sets Optimized
摘要
Abstract
Irregular repeat accumulate low-density-parity-check( IRA-LDPC) codes have low encoding-complexity and good performance in correcting errors. Trapping sets are key factors to the performance of the codes,especially the elementary trapping sets. In order to improve the error-correcting capacity,ac-cording to the characteristic of the structure for parity matrix,the distribution of elementary trapping sets is analyzed,and a construction method of IRA-LDPC codes is proposed. This method based on the construc-tion of the codes can search and eliminate the elementary trapping sets,which lowers the error-floor. As can be seen from the simulation,the bit error rate(BER) reaches 10-7at 2. 2 dB with optimized IRA-LDPC codes with 1 024 code-length and 0. 5 code-rate in additive white Gaussian noise(AWGN) channel.关键词
低密度奇偶校验码/非规则重复积累/基本陷阱集/校验矩阵Key words
LDPC codes/irregular repeat accumulate/elementary trapping sets/parity-check matrix分类
信息技术与安全科学引用本文复制引用
孙康宁,马林华,胡星..基本陷阱集优化的IRA-LDPC码设计[J].电讯技术,2016,56(12):1376-1380,5.基金项目
综合业务网理论及关键技术国家重点实验室(西安电子科技大学)开放研究课题(INS-15-13) （西安电子科技大学）
