Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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DS-CDMA System with Smart Antenna for Different Bandwidths over Rayleigh Fading Channel

레일리 페이딩 채널에서 DS-CDMA 시스템의 대역폭에 따른 스마트 안테나의 영향

  • 배형오 (전남대학교 컴퓨터공학과) ;
  • 김용성 (전남대학교 컴퓨터공학과) ;
  • 류상진 (전남대학교 컴퓨터공학과) ;
  • 김철성 (전남대학교 컴퓨터공학과)
  • Published : 2000.06.01
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Abstract

In this paper, the performance of DS-CDMA system with smart antenna is analyzed for different bandwidths (1.25MHz, 5MHz) and different channel environments (rural, urban). For the analysis of smart antenna system, the vector channel model having the spatio-temporal correlation is needed. Hence, the channel 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. A simulation is carried out by dividing several multipaths within one chip into each one and searching the strongest signal. DS-CDMA system with smart antenna using wider bandwidth present better performance than that using narrow bandwidth. It is shown that the smart antenna is more effective in urban area when using 2D-RAKE receiver.

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