Implementation of chaotic secure communication systems based on OPA circuits |
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| Institution: | 1. Department of Electrical Engineering, National Yunlin University of Science and Technology, Touliu, Yunlin 640, Taiwan;2. Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology, Touliu, Yunlin 640, Taiwan;3. Department of Electrical Engineering, Chien-Kuo Institute of Technology, Chang-Hua 500, Taiwan;1. INFN-LNF, via Enrico Fermi 40, 00044 Frascati (Rome), Italy;2. Department of Physics, “Sapienza” University of Rome, Piazzale A. Moro 2, I-00185 Rome, Italy;3. ENEA, via Enrico Fermi 40, 00044 Frascati (Rome), Italy;4. Physics Department of the University and INFN, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy;1. Istituto Nazionale di Fisica Nucleare, INFN - Sezione di Catania, Catania, Italy;2. Istituto Nazionale di Fisica Nucleare, INFN - Sezione di Firenze, Firenze, Italy;3. Dipartimento di Fisica e Astronomia, Università di Firenze, Firenze, Italy;4. Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy;5. Istituto Nazionale di Fisica Nucleare, INFN - Sezione di Ferrara, Ferrara, Italy;6. Dipartimento di Fisica e Scienze della Terra, Università di Ferrara, Ferrara, Italy;7. Istituto Nazionale di Fisica Nucleare, INFN - Sezione di Roma, Roma, Italy;8. Dipartimento di Scienze di Base e Applicate all''Ingegneria, Università di Roma La Sapienza, Roma, Italy;9. Istituto Nazionale di Fisica Nucleare, INFN - Laboratori Nazionali di Frascati, Frascati, Italy;10. Dipartimento di Scienze Pure e Applicate, Università di Urbino, Urbino, Italy;1. Department of Physics, Technical University of Denmark, Building 307, Kgs. Lyngby DK-2800, Denmark;2. European Synchrotron Radiation Facility, Grenoble 38000, France;3. DTU Danchip, Technical University of Denmark, Building 347, Kgs. Lyngby DK-2800, Denmark;4. DTU Nanotech, Technical University of Denmark, Building 345E, Kgs. Lyngby DK-2800, Denmark;5. CINF, Technical University of Denmark, Building 345E, Kgs. Lyngby DK-2800, Denmark;1. Image Processing Systems Institute of the RAS (IPSI RAS), Laser Measurements Laboratory, Molodogvardeyskaya St., 151, Samara 443001, Russia;2. Samara State Aerospace University (SSAU), Molodogvardeyskaya St., 151, Samara 443001, Russia |
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| Abstract: | In this paper, we proposed a novel three-order autonomous circuit to construct a chaotic circuit with double scroll characteristic. The design idea is to use RLC elements and a nonlinear resistor. The one of salient features of the chaotic circuit is that the circuit with two flexible breakpoints of nonlinear element, and the advantage of the flexible breakpoint is that it increased complexity of the dynamical performance. Here, if we take a large and suitable breakpoint value, then the chaotic state can masking a large input signal in the circuit. Furthermore, we proposed a secure communication hyperchaotic system based on the proposed chaotic circuits, where the chaotic communication system is constituted by a chaotic transmitter and a chaotic receiver. To achieve the synchronization between the transmitter and the receiver, we are using a suitable Lyapunov function and Lyapunov theorem to design the feedback control gain. Thus, the transmitting message masked by chaotic state in the transmitter can be guaranteed to perfectly recover in the receiver. To achieve the systems performance, some basic components containing OPA, resistor and capacitor elements are used to implement the proposed communication scheme. From the viewpoints of circuit implementation, this proposed chaotic circuit is superior to the Chua chaotic circuits. Finally, the test results containing simulation and the circuit measurement are shown to demonstrate that the proposed method is correct and feasible. |
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