Synchronization in Secure Communication by Identification of Chaotic Piezoelectric Resonator

Variety of synchronization based chaos has been introduced to secure the content of transmitted data during the last decade. The chaos is a particular unpredictable state of nonlinear system exhibiting irregular signals and very sensitive to initial conditions with broadband characteristic. Since the discovery of Pecora and Carroll, that two chaotic systems can synchronize, significant interest has been given to the use of these systems to secure transmissions. The simplified model of nonlinear piezoelectric resonator is assumed in order to give the analysis of chaotic behavior of Duffing function, with a significant increase of external energy. Chaotic systems could be used to create keys for encrypt and secure communication. We have presented in this paper enhanced chaotic bandwidth synchronization using an effective estimation algorithm to identify parameters of both chaotic systems in transmitter and in receiver. This can be achieved by control identification of unpredictability parameters of piezoelectric resonator using ant search optimization algorithm.