【摘 要】
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Stochastic resonance (SR) is based on the cooperative effect between the stochastic dynamical system and the exteal forcing. As is well known, the cooperative e
【机 构】
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Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China
论文部分内容阅读
Stochastic resonance (SR) is based on the cooperative effect between the stochastic dynamical system and the exteal forcing. As is well known, the cooperative effect is produced by adding noises. In this paper, we show the evidence that by changing the system parameters and the signal intensity, a nonlinear system in the presence of an input aperiodic signal can yield the cooperative effect, with the noise fixed. To quantify the nonlinear system output,we determine the theoretical bit error rate (BER). By numerical simulation, the validity of the theoretical derivation is checked. Besides, we show that parameter-induced SR is more realizable than SR via adding noises, especially when the noise intensity exceeds the resonance level, or when the characteristic of the noise is not known.
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