An Improved Secure Communication Scheme Using Adaptive Parameter Synchronization

An improved secure communication scheme based on adaptive parameter synchronization of the Rossler systems is proposed. Some additive parameters are introduced, which are used for chaos shift keying. It is shown that the synchronization time scale can be made much smaller than the chaotic oscillation time scale of the transmitting oscillator. The advantages of a communication scheme based on this rapid synchronization are analytic simplicity, rapid parameter convergence leading to greater speed of communication, avoidance of chaotic fluctuations in the parameters before convergence, and enhanced security. These advantages are demonstrated by comparison with a similar communication scheme having synchronization time greater than the chaotic oscillation time scale.

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