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

Author

Jun-Soo Jeon ; Lee, Jeong-Won ; Kim, Cheol-Sung

Author_Institution

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

Volume

1

fYear

2003

Firstpage

348

Abstract

In this paper, the performance of 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 DS-CDMA system with smart antenna, the vector channel having spatio-temporal correlation is modeled as a time-variant linear filter in time, and each multipath is assumed as 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 elected. DS-CDMA system with smart antenna using wider bandwidth presents better performance than that using narrow bandwidth. It is shown that smart antenna is more effective in urban area when using 2D-RAKE receiver.

Keywords

adaptive antenna arrays; bandwidth allocation; broadband networks; code division multiple access; multipath channels; radio receivers; spread spectrum communication; time-varying filters; 1.25 MHz; 2D-RAKE receiver; 5 MHz; DS-CDMA system; bandwidths; direct sequence - code division multiple access; smart antenna; spatio-temporal correlation; time-variant linear filter; urban area; vector channel; wideband multipath channel; Bandwidth; Broadband antennas; Directive antennas; Functional analysis; Multiaccess communication; Multipath channels; Nonlinear filters; Performance analysis; Reflector antennas; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual

ISSN

1090-3038

Print_ISBN

0-7803-7757-5

Type

conf

DOI

10.1109/VETECS.2003.1207560

Filename

1207560