Title :
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
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;
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
DOI :
10.1109/ICATM.2001.932093
