A design of multi-cycle detector for cognitive radios  

作　　者：Jun WANG Guangguo BI 

机构地区：[1]National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China

出　　处：《Frontiers of Electrical and Electronic Engineering in China》2011年第4期501-506,共6页中国电气与电子工程前沿（英文版）

基　　金：supported in part by the National Basic Research Program of China(Grant No.2007CB310603);in part by the Research Fund of National Mobile Communications Research Laboratory,Southeast University(No.2010A05).

摘　　要：Cognitive radio(CR)is a promising technology.The most fundamental problem of CR is spectrum sensing.Energy detector is often considered for spectrum sensing in CR,and if the noise power is exactly known,energy detector has admirable performance.However,in practice,noise power is always inexactly known.To solve this problem,Dandawate[Dandawate et al.IEEE Transactions on Signal Processing,1994,42(9):2355-2369]has proposed a nonparametric single-cycle detector based on cyclostationarity,which is robust to noise uncertainty.In this paper,based on Dandawate’s single-cycle detector,a joint multi-cycle detector is further proposed,which is also nonparametric and immune from noise uncertainty.Simulation results have shown the validity and superiority over single-cycle detector of the proposed detector.

关 键 词：cognitive radio(CR) CYCLOSTATIONARITY noise uncertainty spectrum sensing 

分 类 号：O57[理学—粒子物理与原子核物理]