Channel Allocation in Cognitive Radio Networks: A Game-Theoretic Approach

In the recent years, the number of wireless users has increased exponentially, leading to the need of an efficient utilization of spectrum in cognitive radio networks (CRNs). In this regard, the concept of cognitive radio came around, for which the idea of enabling the secondary users to utilize the frequency bands in the absence of the primary users, has been promoted. In this paper, a game theoretical based model for efficient spectrum sharing among the secondary users is introduced, which is designed using the Nash Equilibrium. In the proposed scheme, the signal to noise plus interference ratio (SINR), delay, and fairness of the network are considered as design parameters. Through simulations, it is demonstrated that in the proposed scheme, the utilization of the channels with the secondary users is up to 17.5%.