https://doi.org/10.1140/epjb/e2002-00269-7
Stochastic multiresonance in a bistable sawtooth potential driven by correlated multiplicative and additive noise
1
State Key Laboratory of Laser Technology (Huazhong University of Science and Technology), Wuhan 430074, PR China
2
Department of Physics, Huazhong University of Science and Technology,
Wuhan 430074, PR China
3
CCAST (World Laboratory), PO Box 8730, Beijing 100080, PR China
Corresponding author: a dajinwu@public.wh.hb.cn
Received:
26
February
2002
Revised:
12
July
2002
Published online:
17
September
2002
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
(the additive noise intensity) curve and the
(the
multiplicative noise intensity) curve.
PACS: 05.40-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 02.50.-r – Probability theory, stochastic processes, and statistics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002