Theoretical Model, Simulation Results and Performances of a Secure Chaos-based Multi-user Communication System

Single user chaotic communication system is well known and documented in recent years as a system that enhance the security in signal transmission. In this paper, we propose a multiuser chaos-based communication system. We will present the results of the investigation of this proposed system, called Chaotic Phase Shift Keying, obtained by simulation, operating in white Gaussian noise channel. The theoretical expression for the probability of error is derived and compared to the bit error rate (BER) characteristics of the system obtained by simulation. The results reveal that the simulated system achieves excellent BER performance, matching that of theoretical CPSK.