中文摘要：

为了实现认知无线网络中的功率控制，以多载波码分多址（MC-CDMA）网络为认知无线电平台，根据香农信息论，基于非合作博弈模型，设计了一种新的效用函数，并对该效用函数的纳什均衡做了证明。在此基础上，提出了一种基于信干噪比（SINR）的非合作博弈功率控制算法。新的效用函数参考信道容量与SINR之间的关系使得纳什均衡结果尽可能接近帕累托最优。仿真结果表明该算法与SINR平衡算法、Koskie-Gajic算法相比，在保证认知用户服务质量（QoS）基础上，提高了网络性能。

英文摘要：

In order to realize the power control in cognitive wireless networks, a new utility function based on non-cooper- ative game was designed on the cognitive radio platform supported by the multi-carrier code division multiple access （MC-CDMA） networks, according to the Shannon information theory, and its Nash equilibrium was proved. Then, a non-cooperative power control algorithm based on the signal to interference plus noise ratio （SINR） was pro- posed. The relationship between the new utility function＇ s reference channel capacity and the SINR makes the Nash equilibrium point most close to the Pareto optimum. The simulation shows that compared with the SINR balan- cing algorithm and the Koskie-Gajic algorithm, the proposed algorithm can ensure the basic QoS for cognitive radio users and improve the performance of cognitive wireless networks.