Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (5): 22-26.doi: 10.3969/j.issn.1000-565X.2010.05.005

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Game-Based Spectrum Allocation in Cognitive Radio Networks

Tan Xue-zhi  Liu Yu-tao  Wei Shou-ming   

  1. Communication Research Center,Harbin Institute of Technology,Harbin 150080,Heilongjiang,China
  • Received:2009-05-20 Revised:2009-08-15 Online:2010-05-25 Published:2010-05-25
  • Contact: 谭学治（1957-），男，教授，博士生导师，主要从事专用移动通信系统、认知无线电、宽带无线应急通信研究． E-mail:tanxz1957@hotmail．com.
  • About author:谭学治（1957-），男，教授，博士生导师，主要从事专用移动通信系统、认知无线电、宽带无线应急通信研究．
  • Supported by:

    国家“863”计划项目（2008AA12Z305）

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Abstract:

Based on the utility function of cognitive users,the game of licensed users in spectrum allocation is solved with the help of the oligopoly market game model.Then,based on the utility function of cognitive users and the theories of Bertrand and Cournot equilibrium,a dynamic Bertrand game algorithm is proposed for the channel pricing of licensed users.Theoretical analysis and simulation results show that the stability of Nash equilibrium solution is related to the regulative rate,that stable channel price can be obtained in a short time when the regulative rate is less than 0.020,that the Nash equilibrium point is related to the marginal cost,and that higher channel price can be obtained with a higher marginal cost.

Key words: cognitive radio, spectrum allocation, differentiated oligopoly market, Cournot equilibrium, Bertrand equilibrium