数据采集与处理2019，Vol.34Issue(2)：234-241,8.DOI:10.16337/j.1004-9037.2019.02.005
无线信道下基于可译集的喷泉码增量译码算法
Delta Decoding Algorithm of Fountain Codes Based on Ripple Set on Wireless Channels
摘要
Abstract
To improve the performance of BP decoding algorithm of digital fountain codes on wireless channels, a delta decoding algorithm based on the ripple set is proposed. The algorithm analyzes the likelihood ratio threshold of the variable nodes. When the likelihood ratio of the variable node is greater than the threshold, it can be successfully decoded in advance. On the other hand, when the overhead is increased, we can delete those variable nodes that have been decoded, and decode the nodes that have not achieved the decoding threshold, to further reduce the amount of calculation. The simulation shows that the performance of the new algorithm is as good as the traditional BP decoding algorithm, but the decoding efficiency is greatly improved.关键词
数字喷泉码/无线信道/BP算法/可译集/增量译码Key words
digital fountain/wireless channel/BP algorithm/ripple set/delta decoding分类
信息技术与安全科学引用本文复制引用
张瑞丹,徐大专,邓大椿..无线信道下基于可译集的喷泉码增量译码算法[J].数据采集与处理,2019,34(2):234-241,8.基金项目
国家自然科学基金(61471192,61371169)资助项目 （61471192,61371169）
江苏高校优势学科建设工程资助项目 （）
南京航空航天大学研究生创新基地(实验室)开放基金(kfjj20160414)资助项目 （实验室）
中央高校基本科研业务费专项资金资助项目 （）
