A Mixed Game Theoretic Framework of Distributed Frequency Allocation and Power Control in Cognitive Radio Networks

This paper considers multi-cell with multi-user (MCMU) frequency allocation and power control problem in Cognitive Radio (CR) network using a mixed game theoretic framework. Although a lot of attention has been paid to joint frequency allocation and power control with game framework, the mixed game framework which combines high performance of cooperative game with fast convergence of non-cooperative game has not been studied before. In this paper, we propose a mixed game framework for distributed frequency allocation and power control. And then corresponding algorithms for finding frequency and power strategy are presented separately. Furthermore we detailedly prove the existence of NE of proposed game model. Extensive simulations illustrate the proposed mixed game and corresponding algorithms can achieve high performance and adapt to dynamic environment well.