Abstract

The phenomenon known as Stochastic Resonance (SR) [1] has been the subject of intensive investigations during the past ten years. The term describes a particular behaviour of the response of a bistable system, when a weak coherent signal is superimposed to stochastic fluctuations in input. One commonly expects that an increase of the noise level leads to a deterioration of the performance. In such systems however the noise can induce synchronized jumps between the two stable states. Hence, the response of the bistable system shows a resonance-like behavior versus the input noise-level, which is the main signature of SR.

© 2000 IEEE