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Secure Transmission of Analog Information using Chaos
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Author(s): A.S. Dmitriev (Kotelnikov Institute of Radio Engineering and Electronics of RAS, Russia), E.V. Efremova (Kotelnikov Institute of Radio Engineering and Electronics of RAS, Russia), L.V. Kuzmin (Kotelnikov Institute of Radio Engineering and Electronics of RAS, Russia), A.N. Miliou (Aristotle University of Thessaloniki, Greece), A.I. Panas (Kotelnikov Institute of Radio Engineering and Electronics of RAS, Russia)and S.O. Starkov (Kotelnikov Institute of Radio Engineering and Electronics of RAS, Russia)
Copyright: 2011
Pages: 24
Source title:
Chaos Synchronization and Cryptography for Secure Communications: Applications for Encryption
Source Author(s)/Editor(s): Santo Banerjee (Politecnico di Torino, Italy)
DOI: 10.4018/978-1-61520-737-4.ch015
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Abstract
In this work the authors present a thorough experimental study of a practical realization of a complex analog signal transmission system using dynamic chaos. It is demonstrated that the chaotic synchronous response could be used as a basis for the design of secure communication channels. The results presented in this work confirm the possibility of secure wireless communications in RF band, while they allow the authors to analyze in detail the restrictions and problems connected with the quality of synchronization of the transmitter and the receiver of the wireless communication systems. The effect of the perturbing factors on the transmission quality is investigated theoretically. It is shown that the main reason of the transmission’s quality degradation is the chaotic response desynchronization associated with the phenomenon of “on-off” intermittency. It is found that under the effect of the perturbing factors, the level of information signal fed to the transmitter must be increased in order to obtain qualitative information transmission. However, in order to provide secure communication, one must decrease the information signal level. A compromise on these contradictory requirements provides an improvement of the quality of the synchronous chaotic response in the receiver.
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