摘要
研究了低密度奇偶校验 (LDPC)码的位翻转硬判决迭代解码算法 ,引入接收信号作为可靠性评估 ,从而推导出LDPC码位翻转软判决解码算法 .在软判决算法的实施过程中 ,提出“分类投票排队”方法 ,使LDPC码位翻转解码算法在复杂度略有增加但仍低于置信传播算法的情况下 ,性能得到改善 .
This paper studied the algorithm of the flipping-bit hard-decision iterative decoding for low-density parity-check (LDPC) codes. Its computing complexity was lower than that of the BP iterative decoding algorithm, but the performance was inferior to that of BP algorithm. In order to improve its performance, the received signal was used as reliability measurement, and an algorithm of flipping-bit soft-decision iterative decoding was recommended. During the implement of the soft-decision decoding, the “vote” algorithm was developed and a new algorithm of “classified vote and queer” is proposed. The performance of flipping-bit decoder was improved, though slightly more complex and lower than BP algorithm.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第5期14-15,18,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 ( 60 3 72 0 67)
关键词
LDPC码
硬判决解码
软判决解码
LDPC code
hard-decision decoding
soft-decision decoding
