Cooperative resource allocation for primary and secondary users with adjustable priorities in cognitive radio networks

Abstract

The ability of cognitive radio to sense the spectrum and adapt its parameters in response to the dynamic environment makes it an ideal candidate for resource allocation of spectrum in wireless networks, especially co-existing and emergency networks. In the two latter networks, the secondary users should sense the spectrum and adapt their parameters such that they can use these resources without causing a degradation or interference to the performance of the primary/licensed users. Therefore, in this paper, a decentralized game theoretic approach for resource allocation of the primary and secondary users in a cognitive radio networks is proposed. In this work, the priorities of the networks are incorporated in the utility and potential functions which are in turn used for resource allocation. It is demonstrated analytically by using the potential and utility functions and through simulation studies that a unique NE exists for the combined game with primary users (PU) and secondary users (SU), and the combined game converges to the NE. © 2011 Springer-Verlag.