Abstract:
The use of some chaotic sequences is a new approach for spread-spectrum systems, ofering better BER (Bit Error Rate) performances and system capacity than conventional sequences. This paper presents some optimal sets of chaotic sequences for the A-DS-CDMA (Asynchronous Direct-Sequence Code-Division Multiple Access) system under the SGA (Standard Gaussian Approximation) condition. The A-DS-CDMA communication over frequency-nonselective Rician fading channel with AWGN (Additive White Gaussian Noise) is considered.