Open Access

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

  • Georges Kaddoum1, 2Email author,
  • Daniel Roviras3,
  • Pascal Chargé2 and
  • Daniele Fournier-Prunaret2
EURASIP Journal on Advances in Signal Processing20092009:571307

Received: 21 January 2009

Accepted: 23 July 2009

Published: 15 September 2009


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.

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Authors’ Affiliations

IRIT Laboratory, University of Toulouse
LATTIS Laboratory, University of Toulouse
LAETITIA Laboratory, CNAM Paris


© 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.