Detection efficiency of cooperative spectrum sensing in cognitive radio network

被引：5
|
作者：
CHEN Xing
机构：
来源：
The Journal of China Universities of Posts and Telecommunications | 2008年 / 03期
关键词：
cognitive radio; spectrum sensing; cooperative sensing; cyclostationarity;
D O I：
暂无
中图分类号：
TN925 [无线电中继通信、微波通信];
学科分类号：
080402 ; 080904 ; 0810 ; 081001 ;
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.
引用
收藏
页码：1 / 7
页数：7
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