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This paper investigates the control and suppression of chaos in nonautonomous oscillators with uncertain and/or unknown parameters. A nonlinear second order Duffing oscillator that has a single harmonic excitation and two uncertain parameters is used to exemplify the suggested techniques. Only one signal is assumed available for processing, which corresponds to the output of the Duffing oscillator...
In this paper, an improved technique for constructing chaotic shift keying for transmitting digital signals is introduced. The key idea is allowing the chaotic transmitted signal to alternate between four different chaotic attractors, in contrast to the classical methods where only two chaotic attractors, representing logic 0 and logic 1 are used. This has the effect of effectively hiding the secret...
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