Abstract
Existing works on coherence resonance, i.e., the phenomenon of noise-enhanced temporal regularity, focus on excitable dynamical systems such as those described by the FitzHugh-Nagumo equations. We extend the scope of coherence resonance to an important class of nonexcitable dynamical systems: coupled chaotic oscillators. In particular. we argue that, when a system of coupled chaotic oscillators in a noisy environment is viewed as a signal processing unit. the degree of temporal regularity of certain output signals may be modulated by noise and may reach a maximum value at some optimal noise level. Implications to signal processing in biological systems are pointed out.
Original language | English |
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Article number | 066202 |
Number of pages | 9 |
Journal | Physical Review. E, Statistical, Nonlinear and Soft Matter Physics |
Volume | 64 |
Issue number | 6 |
DOIs | |
Publication status | Published - Dec 2001 |
Keywords
- on-off intermittency
- stochastic resonance
- coherence resonance
- synchronized motion
- dynamical-systems
- stability theory
- persistent currents
- bifurcations
- rings