The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Probability Models of W-CDMA Signals in Realistic Wideband Multipath Channels

광대역 다중경로 실측채널에서 W-CDMA 수신 신호의 화률 모델

  • 오동진 (전남대학교 정보통신공학부) ;
  • 이주석 (순천제일대학교 전자정보통신학부) ;
  • 이귀상 (전남대학교 전산학과, 정보통신연구소) ;
  • 김철성 (전남대학교 전자컴퓨터정보통신공학부)
  • Published : 2002.04.01
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Abstract

This paper proposes new probability models for wideband code division multiple access (W-CDMA) signals. The performance of a W-CDMA system is evaluated by calculating the average bit error rate(BER) which is derived from the probability distribution of the W-CDMA receiver output. If a probability model of the receiver output is available, the performance evaluation becomes much simpler and it enables diverse analyses of the system for channel coding and other purposes. In this paper, probability distributions of W-CDMA signals, more specifically those of the receiver output, are represented as Rayleigh and noncentral chi distribution, considering various bandwidths and channel environments. The adequacy of a probability model is verified by chi-square test of 1% significance level. The BER of the system obtained from the simulation results is compared to that obtained from the probability model to demonstrate the usefulness of the proposed models.

Keywords

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