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针对认知无线电中博弈功率控制算法的特点,对代价函数进行改进,提出了一种基于信干比的非线性代价函数博弈功率控制算法(NPGP-NL),证明了NPGP-NL算法纳什均衡的存在性和唯一性,并用Matlab软件对NPGP-NL算法做了仿真,结果表明:NPGP-NL算法使认知用户的发射功率降低,效用提高,且在一定程度上兼顾了系统的公平性。
Aiming at the characteristics of game power control algorithm in cognitive radio, the cost function is improved. A non-linear cost function game power control algorithm based on signal to interference ratio (NPGP-NL) is proposed. The NPGP-NL algorithm is proved to be Nash equilibrium NPGP-NL algorithm is simulated with Matlab software. The results show that the NPGP-NL algorithm can reduce the transmitting power of cognitive users and improve the utility, and to a certain extent, take into account the fairness of the system.