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	Stochastic resonance and signal recovery in two-dimensional arrays of coupled oscillators
	Zhang, XJ ; Wang, GX
	2005
关键词	stochastic resonance power spectrum response amplitude BISTABLE SYSTEM WHITE-NOISE SPATIOTEMPORAL SYNCHRONIZATION CLIMATIC TRANSITIONS PHASE-LOCKING EQUATION INFORMATION SUBJECT DRIVEN
英文摘要	In this article, some prominent phenomena in a two-dimensional square array of coupled nonlinear oscillators driven by a periodic signal plus white noise are presented: (i) For a subthreshold periodic signal (A less than or equal to 1-b), besides conventional stochastic resonance (SR) as a best cooperative result of noise and periodic forcing, there also exists spontaneous SR induced purely by noise itself. The effects of these two SR phenomena are shown to be much better than those in the uncoupled case. (ii) For a superthreshold periodic driving (A > 1-b), a certain amount of noise cannot only recover the concealed deterministic signal at the input frequency, but also significantly enhance the recovered signal to several times higher via the happening of SR. This phenomenon of SR is shown to be impossible in a single oscillator system. (C) 2004 Elsevier B.V. All rights reserved.; Physics, Multidisciplinary; SCI(E); EI; 0; ARTICLE; 3-4; 411-420; 345
语种	英语
出处	EI ; SCI
出版者	physica a statistical mechanics and its applications
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/254510]
专题	数学科学学院
推荐引用方式 GB/T 7714	Zhang, XJ,Wang, GX. Stochastic resonance and signal recovery in two-dimensional arrays of coupled oscillators. 2005-01-01.

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