Performance of multi-user chaos-based DS-CDMA system over multipath channel

Georges Kaddoum (1) , Daniel Roviras (2) , Pascal Chargé (3) , Danièle Fournier-Prunaret (3)

1 ENSEEIHT - Ecole Nationale Supérieure d'Electrotechnique, d'Electronique, d'Informatique, d'Hydraulique et de Télécommunications
2 CEDRIC - Centre d'études et de recherche en informatique et communications
3 INSA Toulouse - Institut National des Sciences Appliquées - Toulouse

In this paper, we propose a new approach to compute the exact bit error rate expression for asynchronous chaos-based DS-CDMA system over multipath channel. Perfect estimation of the channel coefficients with the associated delays and chaos synchronization are assumed. A simple RAKE receiver structure is considered. A stationary multipath channel with constant gain is assumed. An asynchronous multi-user chaos-based DS-CDMA system is then defined and the BER is derived in terms of the energy distribution, the number of paths, the noise variances, and the number of users.

Domaines: Informatique [cs]; Traitement du signal et de l'image [eess.SP]

Georges Kaddoum, Daniel Roviras, Pascal Chargé, Danièle Fournier-Prunaret. Performance of multi-user chaos-based DS-CDMA system over multipath channel. ISCAS 2009. IEEE International Symposium on Circuits and Systems, May 2009, Taipei, Taiwan. pp.2637 - 2640. ⟨hal-01125996⟩