Title: Energy control game model for dynamic spectrum scanning

Authors: G.V.K. Sasirekha; George Mathew Tharakan; Jyotsna Bapat

Addresses: IIIT-Bangalore, 26/C, Electronics City, Hosur Road, Bangalore 560100, India ' IIIT-Bangalore, 26/C, Electronics City, Hosur Road, Bangalore 560100, India ' IIIT-Bangalore, 26/C, Electronics City, Hosur Road, Bangalore 560100, India

Abstract: Cognitive networks comprise of intelligent radios that are aware of their surroundings. Spectral awareness is achieved by sensing the spectrum and identifying the unoccupied portions of the spectrum. This paper presents a distributed spectrum sensing model for cognitive radio networks, based on noncooperative game theory. A group of cognitive radios operating in the same spectral band constitute the players in this game; where the group goal is overall energy efficiency and effective use of the available spectrum. Each player acquires spectral occupancy information by scanning the spectrum and from the information shared by other players in the group. To accomplish the group objective of gaining accurate spectral information at minimal energy consumption, it is imperative that the number of scanning radios be minimised. Each radio in the group should partially contribute to the spectrum sensing effort and share its information to all others in the network.

Keywords: energy control; game modelling; dynamic spectrum scanning; cognitive radios; spectral sensing; game theory; energy detection; noncooperative game theory; prisoner's dilemma; forwarder's dilemma; cognitive radio networks.

DOI: 10.1504/IJAACS.2012.046280

International Journal of Autonomous and Adaptive Communications Systems, 2012 Vol.5 No.2, pp.106 - 124

Published online: 05 Dec 2014 *

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