Capacity analysis of uplink and downlink in multimedia DS-CDMA Systems based on constraint models

Author

Duan, Xiang ; Niu, Zhisheng ; Zheng, Junli

Author_Institution

Dept. of Electron. Eng., Tsinghua Univ., Beijing, China

Volume

1

fYear

2003

fDate

11-15 May 2003

Firstpage

402

Abstract

Capacity analysis in wireless communication systems is essential for system design, call admission control and radio resource allocation. Since CDMA is a kind of power-constrained or interference-limited system, its system capacity is not so "hard" as in bandwidth-limited systems, such as TDMA-based systems. In this paper, we analyze the uplink and downlink capacity of multimedia DS-CDMA systems based on constraint models. System capacity is given by feasible condition, which is the sufficient and necessary condition of the existence of feasible solutions to the constraint model. As a byproduct, we also deduct the optimum solution to uplink and downlink transmit power minimization problem, which can be used as references for power control and radio resource allocation multimedia DS-CDMA systems.

Keywords

channel capacity; code division multiple access; multimedia communication; quality of service; radio links; spread spectrum communication; call admission control; capacity analysis; constraint model; downlink capacity; multimedia DS-CDMA system; radio resource allocation; system design; uplink capacity; wireless communication system; Call admission control; Downlink; Interference constraints; Multiaccess communication; Multimedia systems; Power control; Power system modeling; Resource management; System analysis and design; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2003. ICC '03. IEEE International Conference on

Print_ISBN

0-7803-7802-4

Type

conf

DOI

10.1109/ICC.2003.1204208

Filename

1204208