工矿自动化2013，Vol.39Issue(8)：42-46,5.DOI:10.7526/j.issn.1671-251X.2013.08.012
基于改进D-S证据理论的认知无线电频谱感知算法研究
Research of spectrum sensing algorithm of cognitive radio based on improved D-S evidence theory
摘要
Abstract
In view of problem that spectrum sensing algorithm of cognitive radio based on D-S evidence theory will due to an inconsistent result when sensing information of cognitive nodes has serious conflict,the paper proposed a spectrum sensing algorithm of cognitive radio based on improved D-S evidence theory.The improved algorithm uses a new weighted average method to average each evidence to further reduce influence of abnormal evidences compared with arithmetic average method.Meanwhile,the improved algorithm calculates weight of evidence through calculating distance from evidence to average evidence,which can solve complexity problem of weight calculation.The experiment result shows that the improved algorithm can effectively improve sensing performance of spectrum sensing system of cognitive radio when sensing information of cognitive nodes has serious conflict.关键词
认知无线电/频谱感知/D-S证据理论/证据冲突/授权用户/认知用户Key words
cognitive radio/ spectrum sensing/ D-S evidence theory/ evidence conflict/ authorized user/ cognitive user分类
矿业与冶金引用本文复制引用
肖淑艳,崔洁..基于改进D-S证据理论的认知无线电频谱感知算法研究[J].工矿自动化,2013,39(8):42-46,5.基金项目
江苏省产学研联合创新基金项目(BY2009114) （BY2009114）
徐州市科技计划项目(XX10A001). （XX10A001）
