Pulse modulation techniques for nonlinear dynamical systems and a CMOS chaos circuit with arbitrary 1-D maps : New system paradigms for integrated electronics
In: IEICE transactions on electronics, Jg. 87 (2004), Heft 11, S. 1856-1862
academicJournal
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Zugriff:
This paper presents circuit techniques using pulse-width and pulse-phase modulation (PWM/PPM) approaches for VLSI implementation of nonlinear dynamical systems. The proposed circuits implement discrete-time continuous-state dynamics by means of analog processing in a time domain, and also approximately implement continuous-time dynamics. Arbitrary nonlinear transformation functions are generated by the process in which a PPM signal samples a voltage or current source whose waveform in the time domain has the same shape as the desired transformation function. Because a shared arbitrary nonlinear voltage or current waveform generator can be constructed by digital circuits and D/A converters, high flexibility and real-time controllability are achieved. By using one of these new techniques, we have designed and fabricated a CMOS chaos circuit with arbitrary 1-D maps using a 0.6μm CMOS process, and demonstrate from the experimental results that the new chaos circuit successfully generated various chaos with 7.5-7.8 bit precision by using logistic, tent and chaotic-neuron maps.
Titel: |
Pulse modulation techniques for nonlinear dynamical systems and a CMOS chaos circuit with arbitrary 1-D maps : New system paradigms for integrated electronics
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Autor/in / Beteiligte Person: | MORIE, Takashi ; MURAKOSHI, Kenichi ; NAGATA, Makoto ; IWATA, Atsushi |
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Zeitschrift: | IEICE transactions on electronics, Jg. 87 (2004), Heft 11, S. 1856-1862 |
Veröffentlichung: | Oxford: Oxford University Press, 2004 |
Medientyp: | academicJournal |
Umfang: | print, 21 ref |
ISSN: | 0916-8524 (print) |
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