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CLC number: TN92

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Received: 2008-12-21

Revision Accepted: 2009-08-01

Crosschecked: 2009-10-18

Cited: 7

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Journal of Zhejiang University SCIENCE A 2009 Vol.10 No.12 P.1688~1695

http://doi.org/10.1631/jzus.A0820870


Reputation-based linear cooperation for spectrum sensing in cognitive radio networks


Author(s):  Hui-fang CHEN, Xu JIN, Lei XIE

Affiliation(s):  Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   chenhf@zju.edu.cn, xiel@zju.edu.cn

Key Words:  Cognitive radio networks, Cooperative, Reputation, Spectrum sensing


Hui-fang CHEN, Xu JIN, Lei XIE. Reputation-based linear cooperation for spectrum sensing in cognitive radio networks[J]. Journal of Zhejiang University Science A, 2009, 10(12): 1688~1695.

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author="Hui-fang CHEN, Xu JIN, Lei XIE",
journal="Journal of Zhejiang University Science A",
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doi="10.1631/jzus.A0820870"
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T1 - Reputation-based linear cooperation for spectrum sensing in cognitive radio networks
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DOI - 10.1631/jzus.A0820870


Abstract: 
We propose a reputation-based cooperative spectrum sensing scheme in cognitive radio (CR) networks to solve the uncertainty resulting from the multipath fading and shadowing effect. In the proposed scheme, each cooperative CR user has a reputation degree that is initialized and adjusted by the central controller, and used to weight the sensing result from the corresponding CR user in the linear fusion process at the central controller. A simple method for adjusting the reputation degree of CR users is also presented. We analyzed and evaluated the detection performance of the reputation-based cooperative spectrum sensing scheme. Simulation results showed that our proposed scheme alleviates the problem of corrupted detection resulting from destructive channel conditions between the primary transmitter and the CR user. The performance of our proposed scheme was improved compared to the average-based linear cooperation scheme, and was similar to that of the optimal linear cooperation scheme with feasible computational complexity. Moreover, our proposed scheme does not require knowledge of channel statistics.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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