Performance analysis of a non-coherent differential chaos-shift keying technique

In this paper, a time-delay-based multiple access noncoherent differential chaos-shift keying technique has been analyzed under an additive white Gaussian noise environment. Different chaotic maps - cubic map, logistic map, skew tent map - have been used for analyzing the performance of the proposed scheme. The performance of DCSK in the presence of sinusoidal jamming signal including AWGN has also been observed. In a non-coherent DCSK system, data security is significantly improved as chaotic signals are non-periodic, random-like derived from non-linear dynamical systems. As the chaotic signal has a broadband spectrum, the presence of information doesn´t essentially alter the properties of transmitted signal.