Title :
Dynamic Rate Assignment and Power Control in Uplink UMTSW-CDMA Systems
Author :
Luo, Gang ; Zhao, Lian
Author_Institution :
Dept. of Electr. & Comput. Eng., Ryerson Univ., Toronto, Ont.
Abstract :
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
Keywords :
3G mobile communication; broadband networks; code division multiple access; power control; quality of service; radio links; telecommunication control; telecommunication network management; GRP allocation scheme; QoS; code division multiple access system; dynamic rate assignment; greedy rate packing scheme; power consumption minimization; power control; quality of service; radio resource management; rate transmission scheme; system resource utilization maximization; uplink UMTS W-CDMA systems; wideband CDMA; Fading; Multiaccess communication; Power control; Power system modeling; Propagation losses; Quality of service; Rayleigh channels; Resource management; Shadow mapping; Throughput; Greedy Rate Packing; Power control; Rate adaptation; W-CDMA;
Conference_Titel :
Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on
Conference_Location :
Ottawa, Ont.
Print_ISBN :
1-4244-0038-4
Electronic_ISBN :
1-4244-0038-4
DOI :
10.1109/CCECE.2006.277642
