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.
出处
《自动化学报》
EI
CSCD
北大核心
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)
关键词
无线蜂窝系统
功率控制算法
分布法则
随机近似
Distributed database systems
Interference suppression
Parameter estimation
Power control
Stochastic control systems
