协同频谱感知在非理想报告信道中的性能  

Performance of Cooperative Spectrum Sensing in the Presence of Non-ideal Reporting Channel

作　　者：曾昆[1] 唐友喜[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,四川成都611731

出　　处：《现代电子技术》2011年第7期37-40,共4页Modern Electronics Technique

基　　金：国家自然科学基金(60832007;60902027;60572090);国家重大科技专项(2009ZX03003-008-01)资助项目

摘　　要：针对非理想报告信道环境中的认知无线电多用户协同频谱感知问题,建立了协同感知三层模型;以单用户为例,分析了报告信道传输错误对单用户感知性能的影响;同时,基于Newman-Pearson准则推导了统计值传输和判决值传输条件下的最优协同频谱感知方法,并给出了平坦瑞利衰落环境下感知性能的上限。Considering the effect of non-ideal reporting channel on cooperative spectrum sensing in cognitive radio net works, a general 3-layer cooperative sensing model is formulated. The effect of reporting channel error to local sensing （sum mary statistics or decisions based） reliability is investigated. Optimal cooperative spectrum sensing schemes （in Newman-Pear son sense） that take non-ideal reporting channel into account are derived, which provide performance upper bound on coopera tive sensing with reporting error. The results show that the impact of wireless reporting channel on cooperative sensing is sig nificant.

关 键 词：认知无线电 频谱感知 协同 非理想报告信道 

分 类 号：TN92-34[电子电信—通信与信息系统]