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Dynamic Rate Assignment and Power Control in Uplink UMTSW-CDMA Systems

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2 Author(s)
Gang Luo ; Department of Electrical and Computer Engineering, Ryerson University, Toronto, ON, Canada, M5B 2K3. e-mail: g2luo@ryerson.ca ; Lian Zhao

Power control and rate assignment are important tools to maximize system resource utilization while satisfying quality of service (QoS) in a code division multiple access (CDMA) system. In this paper, we propose an algorithm of simultaneously adapting transmission power and data rate to maximize system throughput and minimize the power consumption in a wideband CDMA (W-CDMA) network. The greedy rate packing (GRP) allocation scheme, where high date rates are assigned to users with favorite channel conditions and lower interference, is employed for the rate adaptation. Compared with the results using Zhao et al. (2005) (algorithm 2), close-loop power control (CLPC) alone, and rate adaptation alone approaches, our proposed power and rate transmission scheme (algorithm 1) significantly improves transmission efficiency

Published in:

2006 Canadian Conference on Electrical and Computer Engineering

Date of Conference:

May 2006