Mechanism of signal-to-noise ratio gain in a monostable threshold stochastic resonator

Tamas Fulei; Zoltan Gingl; Peter Makra

doi:10.1117/12.496956

7 May 2003 Mechanism of signal-to-noise ratio gain in a monostable threshold stochastic resonators

Tamas Fulei, Zoltan Gingl, Peter Makra

Proceedings Volume 5114, Noise in Complex Systems and Stochastic Dynamics; (2003) https://doi.org/10.1117/12.496956
Event: SPIE's First International Symposium on Fluctuations and Noise, 2003, Santa Fe, New Mexico, United States

Abstract

In the last few years, several papers have been published that reported high signal-to-noise ratio (SNR) gains in systems showing stochastic resonance. In the present work, we consider a level-crossing detector driven by a periodic pulse train plus Gaussian band-limited white noise, and provide analytical formulae for the dependence of the SNR gain on the relevant parameters of the input (the amplitude and the cut-off frequency of noise, the duty cycle of the deterministic signal and the distance between the threshold and the amplitude of the signal). Our results are valid in the input parameter range wherein high gains are expected, that is, wherein the probabilities of missing and, especially, extra output peaks are very low. We also include numerical simulation results that support the theory, along with illustrations of cases which are outside the validity of our theory.

Citation Download Citation

Tamas Fulei, Zoltan Gingl, and Peter Makra "Mechanism of signal-to-noise ratio gain in a monostable threshold stochastic resonators", Proc. SPIE 5114, Noise in Complex Systems and Stochastic Dynamics, (7 May 2003); https://doi.org/10.1117/12.496956

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