Ponencia
Experimental verification of chaotic encryption of audio using monolithic chaotic modulators
Autor/es | Delgado Restituto, Manuel
Rodríguez Vázquez, Ángel Benito Liñán Reyes, Matías |
Departamento | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo |
Fecha de publicación | 1995 |
Fecha de depósito | 2020-04-29 |
Publicado en |
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ISBN/ISSN | 0277-786X 1996-756X |
Resumen | This paper reports the first experimental verification of chaotic encryption of audio signals using integrated circuits. It is based on a g m-C modulator/demodulator analog CMOS IC that implements a 3rd-order nonlinear ... This paper reports the first experimental verification of chaotic encryption of audio signals using integrated circuits. It is based on a g m-C modulator/demodulator analog CMOS IC that implements a 3rd-order nonlinear differential equation. This has been fabricated in 2.4 micrometer double-poly technology and includes on-chip tuning circuitry based on amplitude detection. It is capable of generating controllable continuous-time chaotic signals. Also, measurements demonstrate how to exploit the synchronization between two of them for encrypted transmission. In these experiments, the worst-case signal to noise ratio of the recovered signal is greater than +40 dB (at the low corner of the audio spectrum) with less than -0.2 dB loss of the input signal power. At higher frequencies, the signal-to-noise ratio rises up to +60 dB, while retaining similar losses at the receiver. |
Identificador del proyecto | ESPRIT IV 8795 |
Cita | Delgado Restituto, M., Rodríguez Vázquez, Á.B. y Liñán Reyes, M. (1995). Experimental verification of chaotic encryption of audio using monolithic chaotic modulators. En Chaotic Circuits for Communication (98-102), Philadelphia, USA: SPIE- The International Society for Optical Engineering. |
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