Title :
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
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;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207560
