Title :
A combined rate and power control scheme and its impact on the capacity of multimedia DS-CDMA systems
Author :
Liu, Jiabin ; Zhu, Shihua ; Li, Wenyuan
Author_Institution :
Dept. of Inf. & Commun. Eng., Xi´´an Jiaotong Univ., China
Abstract :
A combined rate and power control scheme based on the convergence criterion for multimedia direct-sequence code-division multiple-access (DS-CDMA) systems which offer services with different transmission rates (VBR or CBR) and quality of service (QoS) requirements is proposed. Optimization criterion and the solution are formulated for the given multimedia system. Analytical and numerical results show that the proposed scheme gives better performance in terms of system capacity compared with the conventional power control algorithm, while still maintaining the same average rates and required QoS
Keywords :
cellular radio; channel capacity; code division multiple access; convergence of numerical methods; multiuser channels; optimisation; power control; quality of service; radiofrequency interference; spread spectrum communication; telecommunication control; CBR; QoS; VBR; average rates; combined rate/power control; constant bit rate; convergence criterion; direct-sequence code-division multiple-access; multi-cell system; multimedia DS-CDMA systems capacity; optimization criterion; power control algorithm; quality of service; radio channel; radio network; signal-to-interference ratio; transmission rates; variable bit rate; Algorithm design and analysis; Base stations; Bit rate; Communication system control; Convergence; Multiaccess communication; Multimedia systems; Power control; Power engineering and energy; Quality of service;
Conference_Titel :
Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on
Conference_Location :
Beijing
Print_ISBN :
0-7803-7010-4
DOI :
10.1109/ICII.2001.983570
