An Efficiency Optimization Scheme for the Two-Stage Spectrum Sensing in Cognitive Radio Network

Ying-pei LIN  Chen HE  Ling-ge JIANG  Di HE 

Publication
IEICE TRANSACTIONS on Communications  Vol.E95-B  No.7  pp.2489-2493
Publication Date: 2012/07/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
Keyword: 
cognitive radio,  efficiency optimization,  two-stage spectrum sensing,  sensing time, 

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Summary: 
A sensing efficiency optimization scheme based on two-stage spectrum sensing that maximizes the achievable throughput of the secondary network and minimizes the average sensing time is proposed in this paper. A selection method for the threshold is proposed and proved to ensure optimal sensing performance. An effective iterative algorithm is presented to solve the constructed efficiency optimization problem.