Analysis of DS-CDMA system with smart antenna for different bandwidths in the wideband multipath channel

Author

Bae, Hyoung-Oh ; Jeon, Jun-soo ; Cheol-Sung Kim

Author_Institution

Dept. of Comput. Eng., Chonnam Nat. Univ., Kwangju, South Korea

fYear

2001

fDate

2001

Firstpage

235

Lastpage

239

Abstract

In this paper, the performance of a DS-CDMA system with smart antenna is analyzed for different bandwidths (1.25 MHz, 5 MHz) and different channel environments (rural, urban). For the analysis of the smart antenna system, the vector channel having spatio-temporal correlation is modeled as a time-variant linear filter in time, and each multipath is assumed to be a reflective wave from only one direction (only one cluster) in space. Several multipaths within one chip are distinguished into each one and the strongest signal is selected. The DS-CDMA system with smart antenna using wider bandwidth presents better performance than that using narrow bandwidth. It is shown that the smart antenna is more effective in an urban area when using a 2D-RAKE receiver

Keywords

adaptive antenna arrays; cellular radio; code division multiple access; multipath channels; radio receivers; signal detection; spread spectrum communication; 1.25 MHz; 2D-RAKE receiver; 5 MHz; DS-CDMA system; bandwidths; reflective wave; rural channel environment; signal selection; smart antenna; spatio-temporal correlation; time-variant linear filter; urban channel environment; vector channel; wideband multipath channel; Bandwidth; Directive antennas; Functional analysis; Multiaccess communication; Nonlinear filters; Performance analysis; Receiving antennas; Reflector antennas; Urban areas; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

ATM (ICATM 2001) and High Speed Intelligent Internet Symposium, 2001. Joint 4th IEEE International Conference on

Conference_Location

Seoul

Print_ISBN

0-7803-7093-7

Type

conf

DOI

10.1109/ICATM.2001.932093

Filename

932093