Coding Scheme Based on Chaos Synchronization from Noninvertible Maps

Abstract

This paper deals with a new coding scheme in digital implementation for secure communications. It is based on specific dynamic features generated by noninvertible maps. The main results are a global chaos synchronization, an exact synchronization without a residual error generated by the classical methods, a robustness with respect to channel disturbances. Chaos synchronization is obtained by introducting an observer model and the classical results of the control theory. Besides, this coding scheme introduces several "keys" required for decoding the initial information, which improves the security of communications.