Performance analysis of antipodal CSK communication system in a noisy multiuser environment

To provide a quantitative description for noisy multiuser performance of digital communications with chaos, this paper presents an effective approach to analyzing the noisy multiuser performance of an antipodal chaos-shift-keying system with a coherent correlator. Using a Logistic map as the discrete chaos generator, the BER is derived in terms of the signal-to-noise ratios, the number of users and the length of chaotic sequence. The BER and its upon bound for single-user systems are the special cases of the multiuser system. The calculated BERs are consistent with those found from simulations.