通信学报2018，Vol.39Issue(4)：76-83,8.DOI:10.11959/j.issn.1000-436x.2018062
LT码度分布改进及在认知无线电链路保持中的应用
Degree distribution optimization for LT codes and its application in link maintenance of cognitive radio
摘要
Abstract
The degree distribution has a great influence on the performance of Luby transform (LT) codes. Based on the link maintain model of cognitive radio system,the novel degree distribution of LT codes was obtained by using the THOA (two-layer hierarchical optimization algorithm) to combine the IPD (improved poisson distribution) which achieved high decoding success rate with low overhead and the robust soliton distribution (RSD) which achieved high decoding success rate with high overhead. Simulation results show that the proposed method with application to link maintenance in cognitive radio system can improve the reliability and efficiency of secondary communication.关键词
LT码/认知无线电/THOA/可译集/有效吞吐量Key words
LT codes/cognitive radio/THOA/ripple size/goodput分类
信息技术与安全科学引用本文复制引用
易本顺,姚渭箐..LT码度分布改进及在认知无线电链路保持中的应用[J].通信学报,2018,39(4):76-83,8.基金项目
国家自然科学基金资助项目(No.61371125) （No.61371125）
深圳市基础研究基金资助项目(No.JCYJ20150630153917254)The National Natural Science Foundation of China(No.61371125),Basic Research Project of Shenzhen(No.JCYJ20150630153917254) （No.JCYJ20150630153917254）
