Parameter-induced stochastic resonance in an over-damped linear system

Shiqi Jiang, Feng Guo, Yurong Zhou and Tianxiang Gu

Physica A: Statistical Mechanics and its Applications, 2007, vol. 375, issue 2, 483-491

Abstract: Stochastic resonance (SR) in an over-damped linear system subjected to an excitation of bias signal modulated noise with multiplicative and additive noises is investigated. We obtain the exact expressions of the first two moments and the signal-to-noise ratio (SNR) of the output by using linear-response theory. The SNR depends non-monotonically on the intensity and the correlation time of multiplicative noise, the correlation time of additive noise, the intensity of the cross noise between multiplicative and additive noise, as well as the external field frequency. The conventional SR, the SR in a broad sense and the bona fide SR are found in the system. The influences of the asymmetries of multiplicative and additive noise, the correlation rate of the cross noise, the intensity of additive noise, the amplitude of signal and the bias on the SNR are analyzed. Moreover, we pointed out that SR can be realized by tuning the system parameter with fixed noise, i.e., parameter-induced stochastic resonance (PSR) exists.

Keywords: Parameter-induced stochastic resonance; Signal-to-noise ratio; Bias signal modulated noise; Over-damped linear system (search for similar items in EconPapers)
Date: 2007
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:375:y:2007:i:2:p:483-491

DOI: 10.1016/j.physa.2006.10.040

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