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		Shulan KONG;Huanshui ZHANG;Zhaosheng ZHANG;Hongxia WANG.[en_title][J].Control Theory and Technology,2007,5(2):194~198.[Copy]

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ShulanKONG;HuanshuiZHANG;ZhaoshengZHANG;HongxiaWANG
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Received:December 05, 2005Revised:October 31, 2006

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Design of power controller in CDMA system with power and SIR errorminimization

Shulan KONG;Huanshui ZHANG;Zhaosheng ZHANG;Hongxia WANG

(School of Mathematics Science, Qufu Normal University, Qufu Shandong 273165, China; School of Control Science and Engineering, Shandong University, Jinnan Shandong 250061, China; Shenzhen Graduate School of Harbin Institute of Technology, Shenzhen Guangdong 518055, China)

Abstract:

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.

Key words: Power control Kalman filter Code division multiple access