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Differential Chaos Shift Keying (DCSK) employs noncoherent demodulation technology and it's unnecessary for the receiver to generate synchronous chaotic signals at the receiving end. The structure of DCSK is simple and has good anti-noise performance. However, the security performance of DCSK is not enough, and it is easier to be cracked. For the above problems, a novel QAM-DCSK system was proposed...
A chaotic secure communication system has been studied deeply. The synchronization method was based on nonlinear control by Logistic map. With this method, the system can always be possible to be synchronized very quickly within just a single iteration. Thus this method can be implemented into Chaotic Parameter Modulation based communication system. The deductions and simulation results was demonstrated...
Chaotic secure communication is mainly realized by chaotic mask, namely, the information signal is masked by chaotic signal with wide spectrum. Some key issues in chaotic mask have been studied in-depth. As an example, the typical master-slave chaotic synchronization system based on the modified Chua's circuit was introduced. The additive and multiplicative methods used in chaotic mask were deeply...
In this paper, a global chaos synchronization scheme of three identical systems is investigated. By choosing proper coupling parameters, the states of all the three systems can be synchronized. Then this method was applied to secure communication through chaotic masking, used three coupled identical systems, propose a novel method of chaos encryption, after encrypting in the previous two transmitters,...
The complex dynamics behaviors of the Rossler reaction systems are studied in the paper. By applying bifurcation diagram and phase diagram are presented to analyze periodic oscillation state and chaos motions. Periodic and chaotic motions of the system can be distinguished by Lyapunov exponent method. The chaotic motion of the system is controlled using neural network controller. We obtain the steady...
This paper further investigates the full-state hybrid projective synchronization (FSHPS) of chaotic and hyper-chaotic systems. The study first proposed the synchronization that response system also has the constant diagonal matrix . In this paper, we used the term ??IFSHPS?? (an acronym for improved full-state hybrid projective synchronization.) distinguish the ??FSHPS??. Based on the active control...
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