中文

Journal of Applied Sciences ›› 2011, Vol. 29 ›› Issue (1): 1-8.doi: 10.3969/j.issn.0255-8297.2011.01.001

• Communication Engineering •     Next Articles

Cooperative Spectrum Sharing Game in Cognitive Radio Systems

MA Liang1;2, ZHU Qi1;2;3   

  1. 1. Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Telecommunications,
    Nanjing 210003, China
    2. Key Laboratory on Wideband Wireless Communications and Sensor Network Technology, Ministry of
    Education, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
    3. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
  • Received:2010-07-10 Revised:2010-12-29 Online:2011-01-26 Published:2011-01-29

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Abstract:

 Spectrum allocation in cognitive radio systems is investigated in this paper. Based on the Nash bargaining in cooperative game, an improved utility function is proposed to maximize the profit product of all secondary users. The cooperative game algorithm for spectrum allocation in cognitive radio is used, and the priority of secondary users introduced. We show existence and uniqueness of Nash bargaining solution (NBS) for the new utility in cooperative game. Simulation results indicate that the new algorithm can reflect the secondary users’ priority of spectrum allocation by setting the parameters and make the spectrum allocation more effective and fair.

Key words: cognitive radio, spectrum allocation, cooperative game, priority, fairness

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