Title :
Performance of multi-user chaos-based DS-CDMA system over multipath channel
Author :
Kaddoum, Georges ; Roviras, Daniel ; Charge, P. ; Fournier-Prunaret, Danièle
Author_Institution :
Signal & Commun. Team, Univ. of Toulouse, Toulouse, France
Abstract :
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.
Keywords :
channel estimation; chaotic communication; code division multiple access; error statistics; multipath channels; radio receivers; spread spectrum communication; RAKE receiver; bit error rate expression; channel estimation; chaos synchronization; multipath channel; multiuser chaos-based DS-CDMA system; Bit error rate; Chaos; Chaotic communication; Correlators; Delay estimation; Fading; Multiaccess communication; Multipath channels; RAKE receivers; Signal generators;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118343
