Browsing by Author "Feki, Moez"

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    A communication scheme by using synchronized chaotic systems
    (IEEE, 1996) Morgül, Ömer; Feki, Moez
    A method to synchronize systems with chaotic behavior, in a master-slave configuration adapted to communication systems, is discussed. This work is motivated by the need for secure communication. In this method, the synchronization and message transmission phases are separated, and while the synchronization is achieved in the synchronization phases, the message is only sent in the message transmission phases.
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    Synchronization of chaotic systems by using occasional coupling
    (1997) Feki, Moez
    Nonlinear and chaotic systems are difficult to control due to their unstable and unpredictable nature. Although, much work has been done in this area, synchronization of chaotic systems still remains a worthwhile endeavor. In this thesis, a method to synchronize systems, inherently operating in a chaotic mode, by using occasional coupling is presented. We assume that a masterslave synchronizing scheme is available. This approach consists of coupling and uncoupling the drive and response systems during some alternated intervals. It is then shown how this synchronization method can be used to transmit information on a chaotic carrier. The applicability of this method will be illustrated using Lorenz system as the chaotic oscillator.