Title :
Power control for multirate CDMA systems with interference cancellation
Author :
Shum, Siu Man ; Cheng, Roger S.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., China
Abstract :
We consider a wireless multirate CDMA system with perfect successive interference cancellation (IC). Different services have different rates, quality of service (QoS) requirements. We formulate the problem as a constrained optimization problem with the objective of minimizing the total transmission power. An optimal power control strategy is derived. We find that ranking users in descending order of channel gain can minimize the total transmission power of the users, regardless of the users´ data rate and QoS requirements
Keywords :
cellular radio; code division multiple access; interference suppression; multiuser channels; optimisation; personal communication networks; power control; quality of service; radio links; radiofrequency interference; telecommunication control; QoS requirements; cellular radio; channel gain; constrained optimization problem; data rate; interference cancellation; multirate CDMA systems; optimal power control; personal communication services; quality of service; successive interference cancellation; third generation communication systems; total transmission power minimisation; uplink; Bit error rate; Constraint optimization; Integrated circuit modeling; Interference cancellation; Interference constraints; Multiaccess communication; Power control; Power engineering and energy; Power system modeling; Quality of service;
Conference_Titel :
Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-6451-1
DOI :
10.1109/GLOCOM.2000.891268
