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Stochastic resonance in a stochastic bistable system with additive noises and square-wave signal |
Guo Feng(郭锋)a)†, Luo Xiang-Dong(罗向东)a), Li Shao-Fu(李少甫)a), and Zhou Yu-Rong(周玉荣) b) |
a School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China; b School of Information and Electric Engineering, Panzhihua University, Panzhihua 617000, China |
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Abstract This paper considers the stochastic resonance in a stochastic bistable system driven by a periodic square-wave signal and a static force as well as by additive white noise and dichotomous noise from the viewpoint of signal-to-noise ratio. It finds that the signal-to-noise ratio appears as stochastic resonance behaviour when it is plotted as a function of the noise strength of the white noise and dichotomous noise, as a function of the system parameters, or as a function of the static force. Moreover, the influence of the strength of the stochastic potential force and the correlation rate of the dichotomous noise on the signal-to-noise ratio is investigated.
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Received: 24 December 2008
Revised: 21 December 2009
Accepted manuscript online:
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PACS:
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05.40.Ca
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(Noise)
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02.50.Ey
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(Stochastic processes)
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84.30.Sk
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(Pulse and digital circuits)
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Fund: Project supported by the Doctorial Foundation of Southwest University of Science and Technology of China (Grant No. 08zx7108). |
Cite this article:
Guo Feng(郭锋), Luo Xiang-Dong(罗向东), Li Shao-Fu(李少甫), and Zhou Yu-Rong(周玉荣) Stochastic resonance in a stochastic bistable system with additive noises and square-wave signal 2010 Chin. Phys. B 19 080502
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