Stochastic multiresonance in a bistable sawtooth potential driven by correlated multiplicative and additive noise |
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| Authors: | J Wang L Cao DJ Wu |
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| Institution: | (1) State Key Laboratory of Laser Technology (Huazhong University of Science and Technology), Wuhan 430074, PR China, CN;(2) CCAST (World Laboratory), PO Box 8730, Beijing 100080, PR China, CN;(3) Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, PR China, CN |
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| Abstract: | We present an analytic investigation of the signal-to-noise ratio (SNR) by studying the bistable sawtooth system driven by correlated Gaussian white noises. The analytic expression of SNR is obtained. Based on it, we detect the phenomenon of stochastic multiresonance, which arises from the dependence of SNR upon the noises correlation coefficient. Furthermore, there exists not only resonance, but also suppression in the SNR∼D (the additive noise intensity) curve and the SNR∼Q (the multiplicative noise intensity) curve.
Received 26 February 2002 / Received in final form 12 July 2002 Published online 17 September 2002 |
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| Keywords: | PACS 05 40-a Fluctuation phenomena random processes noise and Brownian motion – 02 50 -r Probability theory stochastic processes and statistics |
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