A modified Chua chaotic oscillator and its application to secure communications
In this paper, a new modified Chua oscillator is introduced. The original Chua oscillator is well known for its simple implementation and mathemati- cal modeling. A modification of the oscillator is proposed in order to facilitate the synchronization and the encryption and decryption scheme. The mod...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/24318 |
| Acceso en línea: | https://hdl.handle.net/2117/24318 https://dx.doi.org/10.1016/j.amc.2014.09.031 |
| Access Level: | acceso abierto |
| Palabra clave: | Chua oscillator chaos secure communication synchronization Lyapunov methods Sistemes de control Control theory Àrees temàtiques de la UPC::Matemàtiques i estadística |
| Sumario: | In this paper, a new modified Chua oscillator is introduced. The original Chua oscillator is well known for its simple implementation and mathemati- cal modeling. A modification of the oscillator is proposed in order to facilitate the synchronization and the encryption and decryption scheme. The modifi- cation consists in changing the nonlinear term of the original oscillator to a smooth and bounded nonlinear function. A bifurcation diagram, a Poincar ´e map and the Lyapunov exponents are presented as proofs of chaoticity of the newly modified oscillator. An application to secure communications is pro- posed in which two channels are used. Numerical simulations are performed in order to analyze the communication system. |
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