Potential Game for Dynamic Spectrum Management in Cognitive Radio Networks

Dynamic spectrum management is one of the key technologies in cognitive radio networks, and more and more researchers have been paying much attention to algorithms and models for Spectrum sharing. In this paper, we present a dynamic spectrum management application model based on potential game. Firstly, the mapping relationship is constructed for sections in cognitive radio network and game theory model. Game participants include primary network users and cognitive network users. Game process is defined as participants want to gain personal best interests and use different strategies in game. Secondly, we present a model for dynamic spectrum management in cognitive radio networks. In accordance with the definition and existence theorem of Nash equilibrium, we describe the users’ behaviors in cognitive radio networks. In accordance with the definition and existence theorem of Nash equilibrium, we describe the users’ behaviors in cognitive radio networks. Lastly, we simulate the realistic scenarios with the presented model and the results show that it can solve the problem for dynamic spectrum management with lower efficiency and non-flexibility.