An Adaptive Power Control Algorithm in CDMA Systems

doi:10.13190/jbupt.200703.96.zhaol

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (3): 96-99.doi: 10.13190/jbupt.200703.96.zhaol

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An Adaptive Power Control Algorithm in CDMA Systems

ZHAO Lin, LIU Jian-fei, YU Xiao-ran , WANG Xian-bin

School of Information Engineering, Hebei University of Technology, Tianjin 300401, China

Received:2006-06-27 Revised:2006-10-10 Online:2007-06-30 Published:2007-06-30
Contact: ZHAO Lin

Abstract

Abstract:

An improved adaptive power control algorithm in CDMA systems is presented in this paper. The proposed algorithm is based on SIR-measurement method. The step-size of variable power is decided according to both channel fading characteristics estimated by a Kalman filter and the previous power control instructions recorded by a memory unit. The simulation results demonstrate that the proposed algorithm will be able to overcome the fast and deep fading and improve the performance of CDMA systems.

Key words: TD-SCDMA, power control, kalman filtering, memory unit

CLC Number:

TN929.5

ZHAO Lin, LIU Jian-fei, YU Xiao-ran , WANG Xian-bin. An Adaptive Power Control Algorithm in CDMA Systems[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2007, 30(3): 96-99.

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An Adaptive Power Control Algorithm in CDMA Systems

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