Wang Y, Li X, Li X, Guang Y, Wu Y, Ding Q. FPGA-Based Implementation and Synchronization Design of a New Five-Dimensional Hyperchaotic System.
ENTROPY (BASEL, SWITZERLAND) 2022;
24:1179. [PMID:
36141065 PMCID:
PMC9497514 DOI:
10.3390/e24091179]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/10/2022] [Accepted: 08/20/2022] [Indexed: 06/16/2023]
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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