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为解决CDMA系统中各用户与基站间距离的远近公平问题,提出了一种基于公平性考虑的非合作博弈功率控制算法。该算法综合考虑用户路径增益与发射功率等,设计了一种新的且存在唯一纳什均衡的代价函数,进而能够改善系统中的远近公平问题。仿真结果表明,与传统的功率控制算法相比,提出的功率控制算法具有用户发射功率降低,而且用户获得的SIR是远近公平的,并且用户获得的收益也是远近公平的优势。系统的远近公平问题得到了很好的改善。
In order to solve the problem of fairness of distance between users and base stations in CDMA system, a non-cooperative game power control algorithm based on fairness is proposed. Considering the user path gain and transmit power, the algorithm designs a new cost function which has only Nash equilibrium, which can improve the near and far fairness in the system. The simulation results show that compared with the traditional power control algorithm, the proposed power control algorithm can reduce the transmit power of the user, and the SIR obtained by the user is far and near fair, and the benefits obtained by the user are also the advantage of fairness. The issue of the fairness of the system has been greatly improved.