认知无线电系统的动态双门限协作能量检测算法  

A dynamic double-threshold cooperative energy detection algorithm for cognitive radio systems

作　　者：吴进波[1] 罗涛[1] 林霏[2] 乐光新[1] 

机构地区：[1]北京邮电大学信息与通信工程学院,北京100876 [2]山东轻工业学院电子信息与控制学院,济南250353

出　　处：《高技术通讯》2010年第6期558-564,共7页Chinese High Technology Letters

基　　金：863计划(2007AA10Z235);国家自然科学基金(60872049;60871042);教育部留学归国人员教学;科研建设项目资助

摘　　要：认知无线电系统中,认知用户间协作检测有利于提高频谱检测的准确性。基于OR(或)协作方式和多门限能量检测算法,提出了一种动态双门限协作能量检测算法,并根据认知用户接收到的主用户信噪比确定检测门限。理论分析和仿真结果表明,该算法可以有效提高频谱检测概率,降低系统漏检概率。As is well-known, cooperative detection among cognitive users can improve the accuracy of spectrum detection. And then it proposes, a dynamic double-threshold cooperative energy detection algorithm based on the OR rule and the multithreshold energy detection algorithm, and the detection thresholds are determined according to the SNR （Signal-Noise-Ratio）, which is received from the primary user. The theoretical analysis and simulation results indicate that this strategy can improve the probability of spectrum detection, and can simultaneously depress the probability of missing detection.

关 键 词：认知无线电 协作检测 动态双门限检测 

分 类 号：TN925[电子电信—通信与信息系统]