Circuit Simulation of an Analog Secure Communication based on Synchronized Chaotic Chua’s System

Abstract

This paper presents an effective technique for both synchronization and secure communication. In particular, an adaptive sliding mode observer is developed and practically implemented. Only one component of the state vector of the transmitter, that satisfies the observability matching condition, is sent to the receiver via a public chan nel, which is a sliding mode observer. This observer is able to estimate the state vector of the transmitter and then, reconstruct the unkno wn information hidden in the transmitted with inclusion encryption. Finally, the chaotic secure communication system is simulated with matlab and then practically implemented by electrical circuits with Multisim software and Ultiboard software.