Article
Stochastic resonance with weak monochromatic driving: Gains above unity induced by high-frequency signals
Author/s | Casado Pascual, Jesús
Cubero Gómez, David Baltanás, José P. |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla. Departamento de Física Aplicada I Universidad de Sevilla. Departamento de Física Aplicada II |
Publication Date | 2007 |
Deposit Date | 2015-06-16 |
Published in |
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Abstract | We study the effects of a high-frequency (HF) signal on the response of a noisy bistable system to a low-frequency subthreshold sinusoidal signal. We show that, by conveniently choosing the ratio of the amplitude of the ... We study the effects of a high-frequency (HF) signal on the response of a noisy bistable system to a low-frequency subthreshold sinusoidal signal. We show that, by conveniently choosing the ratio of the amplitude of the HF signal to its frequency, stochastic resonance gains greater than unity can be measured at the low-frequency value. Thus, the addition of the HF signal can entail an improvement in the detection of weak monochromatic signals. The results are explained in terms of an effective model and illustrated by means of numerical simulations. |
Funding agencies | Ministerio de Educación y Ciencia (MEC). España Junta de Andalucía |
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EPL_Cubero_2007_stochastic.pdf | 184.7Kb | [PDF] | View/ | |