Title :
Downlink capacity of multi-rate CDMA with base station antenna array
Author :
Chin, Francois ; Lan, Bo ; Liang, Ying Chang ; Ko, Chi Chung
Author_Institution :
Centre for Wireless Commun., Singapore
Abstract :
In this paper, we study the downlink capacity of a multi-rate DS-CDMA (direct sequence code division multiple access) system with an antenna array at base station. We present the performance analysis for the mixture of data users and voice users defined by their bandwidth and fidelity requirements in a multi-cell CDMA cellular system, where there are three sectors per cell. And we adopt a multi-channel scheme as our multirate scheme. In this paper, the effect of path loss, Rayleigh fading, log-normal shadowing, together with multiple access interference and thermal noise are considered. Simulation results are also presented
Keywords :
Rayleigh channels; antenna arrays; cellular radio; channel capacity; code division multiple access; data communication; log normal distribution; radio links; spread spectrum communication; thermal noise; voice communication; DS-CDMA; Rayleigh fading; base station antenna array; data users; direct sequence code division multiple access; downlink capacity; log-normal shadowing; multi-cellular system; multi-channel scheme; multi-rate CDMA; multiple access interference; multirate scheme; path loss; performance analysis; simulation; thermal noise; voice users; Antenna arrays; Bandwidth; Base stations; Direct-sequence code-division multiple access; Downlink; Multiaccess communication; Multiple access interference; Performance analysis; Rayleigh channels; Shadow mapping;
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.1999.800262
