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Anti-Jamming Games in Multi-Channel Cognitive Radio Networks

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4 Author(s)
Yongle Wu ; Qualcomm Inc., San Diego, CA, USA ; Beibei Wang ; Liu, K.J.R. ; Clancy, T.C.

Crucial to the successful deployment of cognitive radio networks, security issues have begun to receive research interests recently. In this paper, we focus on defending against the jamming attack, one of the major threats to cognitive radio networks. Secondary users can exploit the flexible access to multiple channels as the means of anti-jamming defense. We first investigate the situation where a secondary user can access only one channel at a time and hop among different channels, and model it as an anti-jamming game. Analyzing the interaction between the secondary user and attackers, we derive a channel hopping defense strategy using the Markov decision process approach with the assumption of perfect knowledge, and then propose two learning schemes for secondary users to gain knowledge of adversaries to handle cases without perfect knowledge. In addition, we extend to the scenario where secondary users can access all available channels simultaneously, and redefine the anti-jamming game with randomized power allocation as the defense strategy. We derive the Nash equilibrium for this Colonel Blotto game which minimizes the worst-case damage. Finally, simulation results are presented to verify the performance.

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:30 ,  Issue: 1 )

Date of Publication:

January 2012

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