CDMA Power Control Using Channel Prediction in Mobile Fading Channels

Authors:
Sangho Choe
Affiliations:
School of Information, Communication & Electronic Engineering, The Catholic University of Korea, Gyeonggi-do, Korea
Venue:
WWIC '07 Proceedings of the 5th international conference on Wired/Wireless Internet Communications
Year:
2007

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Abstract

This paper presents a CDMA closed-loop power control (CLPC) using channel prediction in time-varying mobile fading channels. The proposed CLPC that relies on least square (LS) or least mean square (LMS) based autoregressive (AR) low-rate prediction provides a particularly robust performance for large loop delays, especially in the presence of channel estimation errors. As the mobility increases the proposed CLPC reduces mean-square error (MSE) further than conventional CLPCs. The Monte-Carlo simulation results demonstrate the superiority of the proposed CLPC over conventional nonpredictive and predictive CLPCs.