Performance Analysis of Cooperative Spectrum Sensing over Generalized Fading Channels

Dian-Wu Yue; Francis C.M. Lau; Qian Wang

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Performance Analysis of Cooperative Spectrum Sensing over Generalized Fading Channels

Dian-Wu Yue 1 * #,Francis C.M. Lau 2,Qian Wang 3

1.College of Information Science and Technology, Dalian Maritime University

2.Department of Electronic & Information Engineering, Hong Kong Polytechnic University

3.Department of Electrical & Computer Systems Engineering, Monash University

*Correspondence author

#Submitted by

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Funding: Research Fund for the Doctoral Program of Higher Education（No.No.20132125110006）

Opened online: 5 June 2014

Accepted by: none

Citation: Dian-Wu Yue,Francis C.M. Lau,Qian Wang.Performance Analysis of Cooperative Spectrum Sensing over Generalized Fading Channels[OL]. [ 5 June 2014] http://en.paper.edu.cn/en_releasepaper/content/4599149

This paper analyzes the spectrum-sensing performance of a cooperative cognitive radio (CR) network consisting of a number of CR nodes and a fusion center (FC). A novel notation of "log-average-SNR ratio" is introduced in order to relate the average SNR of the CR-node-FC link and that of the primary-user-CR-node link. The sensing gain and the coding gain can be used to characterize the CR network performance at the high SNR region. Exact expressions for these two parameters are derived. Based on these expressions, ways to optimize the performance of the CR network can be determined.

Keywords:Coding gain, cognitive radio, log-average-SNR ratio, missing-detection probability, sensing gain, spectrum sensing.

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