基于博弈论的宽带无线系统功率控制算法研究  

Research on the Power Control Based on Game Theory in Broadband Wireless Systems

作　　者：满成圆[1] 刘雁[1] 周文安[1] 宋俊德[1] 

机构地区：[1]北京邮电大学电子工程学院,北京100876

出　　处：《北京邮电大学学报》2005年第5期121-124,共4页Journal of Beijing University of Posts and Telecommunications

基　　金：国家"863计划"项目(2003AA12331004)

摘　　要：将博弈论理论应用于宽带无线系统中的多天线的功率控制,构建了分布式通用功率控制的框架.将功率控制描述为N用户的非合作博弈,用效用函数表示各天线的服务质量(QoS)等级,用代价函数表示达到该等级需要付出的代价,将功率控制描述为最大化净效用(效用函数与代价函数之差)的过程.同时提出了一个符合该框架的功率控制算法,并证明了该算法收敛于唯一的纳什均衡点,且具有适应不同的QoS等级的可调因子.A novel framework was proposed which introduced the Game Theory into the multi-antenna power control in broadband wireless systems. Firstly, the power control problem was described as an N-person non-cooperating Game. Secondly, antenna＇s quality of service（QoS）level was formulated by a utility function and the cost for reaching the level is formulated by a price function. Finally, the process of power control was expressed as the process of maximum net utility （utility function minus price function） for each antenna. For the application of the framework, a new algorithm was also proposed. By the results of theoretical deductions and simulations, the algorithm converges to a fixed Nash equilibrium point and it also has the tunable parameter to meet the needs of different QoS levels.

关 键 词：多输入多输出天线 分布式功率控制 博弈论 

分 类 号：TN915.07[电子电信—通信与信息系统]