无线电工程Issue(3)：4-6,18,4.DOI:10.3969/j.issn.1003-3106.2015.03.02
一种改进型LLR BP算法的LDPC译码研究
A New Modified LLR BP Algorithm Research for LDPC Decoders
摘要
Abstract
Classical LLR BP algorithm to decode LDPC involves high complexitybecause of iterations and calculation complexity of horizontal directions in every iteration process. This paper proposes a new modified LLR BP algorithm to monitor whether decoding output is stable or not to decrease iteration times in low signal noise rate.At the same time,Taylor function approximation is adopted to reduce calculation complexity at check codes. Simulations reveal that this proposed method can reduce decode complexity widely for LDPC in the condition of a small decoding performance loss.关键词
LDPC码/LLR BP算法/改进算法/检验因子/复杂度Key words
LDPC/LLR BP algorithm/modified algorithm/check factor/complexity分类
信息技术与安全科学引用本文复制引用
孙斌,王钢,杨文超,王少博..一种改进型LLR BP算法的LDPC译码研究[J].无线电工程,2015,(3):4-6,18,4.基金项目
总装“十二五”预先研究基金资助项目。 （）
