Channel Adaptive Power Control in the Uplink of CDMA Systems

Authors:
Seung-Ok Choi;Kwan-Ho You
Affiliations:
Department of Electrical Engineering, School of Information & Communication Engineering, Sungkyunkwan University, Suwon, Korea 440-746;Department of Electrical Engineering, School of Information & Communication Engineering, Sungkyunkwan University, Suwon, Korea 440-746
Venue:
Wireless Personal Communications: An International Journal
Year:
2008

Citing 2
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Abstract

In this paper, we propose an adaptive power control algorithm using optimal control theory for CDMA cellular systems. With linear quadratic control, each mobile transmits to achieve a desired SIR under the fast varying environment of practical CDMA cellular systems. We apply Kalman filter theory to estimate a channel variation which is vulnerable to nonconstant link gain, mutual interference and uncertain noise. Through simulation comparison with DCPC algorithm, the suggested power control algorithm shows an increased uplink channel capacity.