Power Control Algorithm for Wireless Cellular System  

作　　者：蔡敏 张焕水 王伟 

机构地区：[1]Research Center of Information and Control, Dalian University of Technology, Dalian 116023

出　　处：《自动化学报》2005年第2期239-247,共9页Acta Automatica Sinica

基　　金：Supported by National Natural Science Foundation of P. R. China (60174017)

摘　　要：A novel distributed power control algorithm based on interference estimation is presented for wireless cellular system. A classical result of stochastic approximation is applied in this scheme.The power control algorithm is converted to seeking for the zero point problem of a certain function.In this distributed power algorithm, each user iteratively updates its power level by estimating the interference. It does not require any knowledge of the channel gains or state information of other users. Hence, the proposed algorithm is robust. It is proved that the algorithm converges to the optimal solution by stochastic approximation approach.A novel distributed power control algorithm based on interference estimation is presented for wireless cellular system. A classical result of stochastic approximation is applied in this scheme. The power control algorithm is converted to seeking for the zero point problem of a certain function. In this distributed power algorithm, each user iteratively updates its power level by estimating the interference. It does not require any knowledge of the channel gains or state information of other users. Hence, the proposed algorithm is robust. It is proved that the algorithm converges to the optimal solution by stochastic approximation approach.

关 键 词：无线蜂窝系统 功率控制算法 分布法则 随机近似 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] TN929.53[自动化与计算机技术—计算机科学与技术]