CDMA中一种改进的分布式功率控制算法  

A new distributed power control algorithm in CDMA communication system

作　　者：叶嘉鲁[1] 李福德[1] 肖伟[1] 

机构地区：[1]西安理工大学自动化与信息工程学院,陕西西安710048

出　　处：《计算机应用》2006年第11期2547-2549,2553,共4页journal of Computer Applications

摘　　要：在CDMA系统传统分布式功率控制算法的基础上,引入博弈论,设计合适的代价函数,基于此推导出一种改进的分布式功率控制算法,并证明了新算法有唯一的收敛点。仿真结果表明,该算法比传统算法收敛速度提高了大约一倍。在信干比轻微降低时,用户的发射功率大大降低。Based on traditional CDMA power control balancing algorithm, a non-cooperative game was introduced. An appropriate cost function was chosen and a new algorithm for distributed power control was proposed. Practical applications prove that the proposed algorithm converges at a unique fixed point. Simulation results demonstrate that the speed of the new algorithm is about two times that of the traditional one, What＇s more, the substantial power declines greatly while slightly reducing the achieved SIR.

关 键 词：CDMA 功率控制 非合作博弈 代价函数 

分 类 号：TN914.53[电子电信—通信与信息系统] TN915.07[电子电信—信息与通信工程]