期刊
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
卷 14, 期 10, 页码 3519-3539出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218127404011454
关键词
aperiodic signal; stochastic resonance; noise reduction; excitable system
To suppress undesirable noise (jamming) associated with signals is important for many applications. Here we explor the idea of jamming suppression with realistic, aperiodic signals by stochastic resonance. In particular, we consider weak amplitude-modulated (AM), frequency-modulated (FM), and chaotic signals with strong, broad-band or narrow-band jamming, and show that aperiodic stochastic resonance occuring in an array of excitable dynamical systems can be effective to counter jamming. We provide formulas for quantitative measures characterizing the resonance. As excitability is ubiquitous in biological systems, our work suggests that aperiodic stochastic resonance may be a universal and effective mechanism for reducing noise associated with input signals for transmitting and processing information.
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