FPGA-Based Implementation and Synchronization Design of a New Five-Dimensional Hyperchaotic System |
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Authors: | Ya Wang Xinyu Li Xiaodong Li Yerui Guang Yanan Wu Qun Ding |
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Affiliation: | 1.Electronic Engineering College, Heilongjiang University, Harbin 150080, China;2.Beijing Aerospace Institute of Automatic Control, Beijing 100854, China |
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Abstract: | Considering the security of a communication system, designing a high-dimensional complex chaotic system suitable for chaotic synchronization has become a key problem in chaotic secure communication. In this paper, a new 5-D hyperchaotic system with high order nonlinear terms was constructed and proved to be hyperchaotic by dynamical characterization characteristics, the maximum Lyapunov exponent was close to 2, and there was a better permutation entropy index, while a valid chaotic sequence could be generated in three cycles in the FPGA (Field Programmable Gate Array)-based implementation. A multivariable nonlinear feedback synchronous controller based on FPGA was proposed to design and implement synchronization of high order complex hyperchaotic systems. The results show that the error signal converged to 0 rapidly under the effect of the nonlinear feedback synchronous controller. This lays the foundation for the synchronization of high order complex chaotic systems. |
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Keywords: | complex chaotic system nonlinear feedback control chaotic synchronization FPGA secure communication |
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