FPGA realization of a chaotic communication system applied to image processing
| Autor: | V. H. Carbajal-Gómez, P. J. Obeso-Rodelo, Jose Cruz Nuñez-Perez, Esteban Tlelo-Cuautle, Jose de Jesus Rangel-Magdaleno |
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| Rok vydání: | 2015 |
| Předmět: |
Applied Mathematics
Mechanical Engineering Numerical analysis Chaotic Aerospace Engineering Ocean Engineering Image processing System of linear equations Communications system Nonlinear Sciences::Chaotic Dynamics symbols.namesake Control and Systems Engineering symbols Electronic engineering Chaotic oscillators Electrical and Electronic Engineering Hamiltonian (quantum mechanics) Field-programmable gate array Mathematics |
| Zdroj: | Nonlinear Dynamics. 82:1879-1892 |
| ISSN: | 1573-269X 0924-090X |
| DOI: | 10.1007/s11071-015-2284-x |
| Popis: | The hardware realization of a chaotic communication system from the description of continuous-time multi-scroll chaotic oscillators is introduced herein by using field-programmable gate arrays (FPGA). That way, two multi-scroll chaotic oscillators generating 2 and 6 scrolls are synchronized by applying Hamiltonian forms and observer approach. The synchronized master-slave topology is used to implement a secure communication system by adding chaos to an image at the transmission stage and by subtracting chaos at the recover stage. The FPGA realization begins by applying numerical methods to solve the system of equations describing the whole chaotic communication system. Further, the replacement of multipliers by single constant multiplication blocks reduces the use of hardware resources and accelerates the processing time as well. Using chaotic oscillators with 2 and 6 scrolls, three kinds of images are processed: one in black and white and two in gray tones. Finally, the experimental results confirm the appropriateness on realizing chaotic communication systems for image processing by using FPGAs. |
| Databáze: | OpenAIRE |
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