MIMO-CDMA系统中一种基于博弈方式的分布式功率控制  

Distributed Game-Theoretic Power Control for Wireless Data over MIMO-CDMA System

作　　者：钟卫[1] 徐友云[1] 蔡跃明 

机构地区：[1]解放军理工大学通信工程学院,南京210007

出　　处：《电子与信息学报》2007年第8期1929-1933,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60372080);江苏省自然科学基金(BK2004014)资助课题

摘　　要：针对MIMO-CDMA系统中的无线数据业务,本文研究了分布式非合作功率控制博弈。对MIMO-CDMA系统中的无线数据业务建立了收益函数,该收益函数对功率效率和频谱效率都进行了考虑,并能够反映系统中无线数据用户对服务质量(QoS)的满意程度。以收益函数为基础,建立了两种非合作功率控制博弈模型,并对模型纳什均衡的存在性和唯一性进行了推导。另外,还研究了两种代价函数机制。最后,给出了一种获得纳什均衡的算法,数值仿真结果表明该算法具有良好的性能,有效地控制了各用户的发射功率。Distributed noncooperative power control game for wireless data is considered in multiple-input multiple-output （MIMO） CDMA system. Utility functions are established for wireless data over the MIMO CDMA system. The spectral efficiency and power efficiency are both referred to as utility which reflects the level of satisfaction a data user gets. According to the utility functions, two noncooperative power control games are developed, and establish the existence, uniqueness of the Nash equilibria of them. The pricing mechanism is studied for the power control games. We also present power control algorithms to get the Nash equilibria and analyze the performance of the proposed power control games.

关 键 词：多输入多输出 CDMA 功率控制 博弈论 非合作博弈 收益函数 

分 类 号：TN92[电子电信—通信与信息系统]