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  • Research Article
  • Open Access

Accurate Bit Error Rate Calculation for Asynchronous Chaos-Based DS-CDMA over Multipath Channel

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EURASIP Journal on Advances in Signal Processing20092009:571307

  • Received: 21 January 2009
  • Accepted: 23 July 2009
  • Published:


An accurate approach to compute the bit error rate expression for multiuser chaosbased DS-CDMA system is presented in this paper. For more realistic communication system a slow fading multipath channel is considered. A simple RAKE receiver structure is considered. Based on the bit energy distribution, this approach compared to others computation methods existing in literature gives accurate results with low computation charge. Perfect estimation of the channel coefficients with the associated delays and chaos synchronization is assumed. The bit error rate is derived in terms of the bit energy distribution, the number of paths, the noise variance, and the number of users. Results are illustrated by theoretical calculations and numerical simulations which point out the accuracy of our approach.


  • Error Rate
  • Energy Distribution
  • Noise Variance
  • Rate Calculation
  • Receiver Structure

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Authors’ Affiliations

IRIT Laboratory, University of Toulouse, 2 rue Charles Camichel, 31071 Toulouse cedex, France
LATTIS Laboratory, University of Toulouse, 135 avenue de Rangueil, 31077, Toulouse, cedex 4, France
LAETITIA Laboratory, CNAM Paris, 292 rue Saint-Martin, 75003 Paris, France


© Georges Kaddoum et al. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.