Information Computing and Applications

In order to solve the severe waste of spectrum resources due to the way of fixed spectrum allocation and the situation that the scarcity of spectrum restricts the development of wireless communication system, this paper proposed an efficient cognitive users spectrum allocation plan based on the evolutionary game, which depicts the dynamic behaviors choosing to purchase spectrum of primary users among a group of cognitive users in a group a , which focuses on the case has two primary users and thirty cognitive users in cognitive radio networks. Detailed simulation results show that the proposed scheme can improve the spectrum utilization and maximize the utility of the cognitive users and primary users.