Title :
Power allocation for multi-rate multiuser detection in wideband CDMA systems
Author :
Chung, Meng-Hsuan ; Chen, Kwang-Cheng
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
The capacity of a CDMA system supporting multimedia services with linear multiuser detectors (MUD) is analyzed. By adopting the generalized effective user data model for multi-rate CDMA and extending the capacity analysis for CDMA systems supporting single class of services with linear MUDs in earlier works, we investigate the capacity of a multimedia CDMA system in a cellular environment. The methodology of resource assignment or power allocation is also developed, and is demonstrated to control the multi-dimensional capacity distribution and to affect the efficiency of the multimedia systems
Keywords :
broadband networks; cellular radio; channel capacity; code division multiple access; multimedia communication; multiuser channels; signal detection; capacity analysis; cellular environment; generalized effective user data model; linear multiuser detectors; multi-dimensional capacity distribution; multi-rate CDMA; multi-rate multiuser detection; multimedia services; power allocation; resource assignment; system capacity; system efficiency; wideband CDMA systems; Bit error rate; Capacity planning; Data models; Detectors; Multiaccess communication; Multimedia systems; Multiuser detection; Resource management; Speech analysis; Wideband;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.797206
