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Distributed spectrum sensing for cognitive radio networks with heterogeneous traffic

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5 Author(s)
Maharjan, S. ; Simula Res. Lab., Lysaker, Norway ; Chau Yuen ; Yong Huat Chew ; Yan Zhang
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Cooperative spectrum sensing improves reliability and the detection performance of sensing. However, the fully cooperative scenario may not be realistic to assume in many cases. We consider a cognitive radio network with heavy traffic users and light traffic users and analyze their behavior towards sensing using the concept of mixed strategy Nash equilibrium. Further, we design a distributed game using evolutionary game theory such that as long as light traffic users are present, they share the sensing responsibility while heavy traffic users get a free ride. Finally, the evolution dynamics is shown to converge to the evolutionarily stable strategy for the case of multiple users.

Published in:

Applied Sciences in Biomedical and Communication Technologies (ISABEL), 2010 3rd International Symposium on

Date of Conference:

7-10 Nov. 2010