Design of power controller in CDMA system with power and SIR error minimization  

作　　者：Shulan KONG Huanshui ZHANG Zhaosheng ZHANG Hongxia WANG 

机构地区：[1]School of Mathematics Science, Qufu Normal University, Qufu Shandong 273165, China [2]School of Control Science and Engineering, Shandong University, Jirman Shandong 250061, China [3]Shenzhen Graduate School of Harbin Institute of Technology, Shenzhen Guangdong 518055, China

出　　处：《控制理论与应用（英文版）》2007年第2期194-198,共5页

基　　金：the National Natural Science Foundation of China(No.60574016).

摘　　要：In this paper, an uplink power control problem is considered for code division multiple access （CDMA） systems. A distributed algorithm is proposed based on linear quadratic optimal control theory. The proposed scheme minimizes the sum of the power and the error of signal-to-interference ratio （SIR）. A power controller is designed by constructing an optimization problem of a stochastic linear quadratic type in Krein space and solving a Kalman filter problem.In this paper, an uplink power control problem is considered for code division multiple access （CDMA） systems. A distributed algorithm is proposed based on linear quadratic optimal control theory. The proposed scheme minimizes the sum of the power and the error of signal-to-interference ratio （SIR）. A power controller is designed by constructing an optimization problem of a stochastic linear quadratic type in Krein space and solving a Kalman filter problem.

关 键 词：Power control Kalman filter Code division multiple access （CDMA） 

分 类 号：TN929.533[电子电信—通信与信息系统]