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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Shi Lei,Ye Zhun,Zhang Zhong Zhao.Cooperative detection algorithm of spectrum holes in cognitive radio[J].Journal of Harbin Institute Of Technology(New Series),2009,16(1):27-30.DOI:10.11916/j.issn.1005-9113.2009.01.006.
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Cooperative detection algorithm of spectrum holes in cognitive radio
Author NameAffiliation
Shi Lei Communication Research Center, Harbin Institute of Technology, Harbin 150080, China 
Ye Zhun Communication Research Center, Harbin Institute of Technology, Harbin 150080, China 
Zhang Zhong Zhao Communication Research Center, Harbin Institute of Technology, Harbin 150080, China 
Abstract:
To improve the detection performance of sensing users for primary users in the cognitive radio, an optimal cooperative detection algorithm for many sensing users is proposed. In this paper, optimal decision thresholds of each sensing user are discussed. Theoretical analysis and simulation results indicate that the detection probability of optimal decision threshold rules is better than that of determined threshold rules when the false alarm of the fusion center is constant. The proposed optimal cooperative detection algorithm improves the detection performance of primary users as the attendees grow. The 2 dB gain of detection probability can be obtained when a new sensing user joins in, and there is a 17 dB improvement when the accumulation number increases from 1 to 50.
Key words:  cognitive radio  spectrum detection  optimal cooperative algorithm
DOI：10.11916/j.issn.1005-9113.2009.01.006
Clc Number:TN92
Fund:

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