Evidence of parameter-induced aperiodic stochastic resonance with fixed noise

被引：15
作者：
Institute of Information and Communication Engineering, Zhejiang University, Hangzhou 310027, China [1 ]
机构：
[1] Institute of Information and Communication Engineering, Zhejiang University
来源：
Chin. Phys. | 2007年 / 2卷 / 340-345期
关键词：
Aperiodic stochastic resonance; Bit error rate; Tuning parameters;
D O I：
10.1088/1009-1963/16/2/012
中图分类号：
学科分类号：
摘要：
Stochastic resonance (SR) is based on the cooperative effect between the stochastic dynamical system and the external 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. © 2007 Chin. Phys. Soc. and IOP Publishing Ltd.
引用
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页码：340 / 345
页数：5
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