认知无线电网络中基于合作的频谱检测研究  

Reseach on Cooperative Sensing in Cognitive Radio Networks

作　　者：王悦[1] 冯春燕[1] 曾志民[1] 郭彩丽[1] 

机构地区：[1]北京邮电大学通信网络综合技术研究所,北京100876

出　　处：《电信科学》2008年第7期54-57,共4页Telecommunications Science

基　　金：国家自然科学基金资助项目(No.60772110)

摘　　要：在认知无线电技术的实际应用场景中,针对单认知用户本地检测的局限性,以提高认知无线电网络的检测性能和缩短检测时间为目标,分别从分布式多用户和协作分集两种合作检测方式出发,对认知无线电网络中的合作检测算法和机制进行了分析及讨论,并在此基础上进一步提出了认知无线电合作检测的未来研究方向及难点问题。In the scenario of cognitive radio, to solve the limitations of local spectrum sensing performed by individual CR users, the cooperative operation is introduced into the spectrum sensing of cognitive radio networks, which can improve the sensing performance and reduce the sensing time. In this paper, some algorithms and schemes of cooperative sensing are studied under two cooperation modes： distributed multiuser manner and cooperative diversity manner. Furthermore, several future research directions of cooperative sensing and the relative challenges in CRN are also provided.

关 键 词：认知无线电 合作检测 分布式多用户 协作分集 检测性能 检测时间 

分 类 号：TN929.5[电子电信—通信与信息系统] TN914.42[电子电信—信息与通信工程]