Detection efficiency of cooperative spectrum sensing in cognitive radio network  

作　　者：CHEN Xing BIE Zhi-song WU Wei-ling 

机构地区：[1]Key Laboratory of Information Processing and Intelligent Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2008年第3期1-7,共7页中国邮电高校学报（英文版）

摘　　要：Sensing the spectrum in a reliable and efficient manner is crucial to cognitive radio. To combat the channel fading suffered by the single radio, cooperative spectrum sensing is employed, to associate the detection of multiple radios. In this article, the optimization problem of detection efficiency under the constraint of detection probability is investigated, and an algorithm to evaluate the required radio number and sensing time for maximal detection efficiency is presented. To show the effect of cooperation on the detection efficiency, the proposed algorithm is applied to cooperative sensing using the spectral correlation detector under the Rayleigh flat fading channel.

关 键 词：cognitive radio spectrum sensing cooperative sensing CYCLOSTATIONARITY 

分 类 号：TN925.93[电子电信—通信与信息系统]