Stochastic Resonance in an Asymmetric Mono-stable System Subject to Two Periodic Forces and Multiplicative and Additive Noise  

作　　者：LUO Xiang-Dong GUO Feng ZHOU Yu-Rong 

机构地区：[1]School of Information Engineering, Southwest University of Science and Technology, Mianyang 621010, China [2]School of Life Science and Technology, University of Electronic Science and Technology, Chengdu 610054, China

出　　处：《Communications in Theoretical Physics》2009年第2期283-286,共4页理论物理通讯（英文版）

基　　金：supported by the Doctor Foundation of SWUST of China under Grant No.08ZX7108

摘　　要：The phenomenon of stochastic resonance （SR） in an asymmetric mono-stable system subject to two external periodic forces and multiplicative and additive noise is investigated. It is shown that the signal-to-noise ratio （SNR） for the fundamental and higher harmonics is a non-monotonic function of the intensities of the multiplicative and additive noise, as well as of the system parameter. Moreover, the SNR for the fundamental harmonic decreases with the increase of the system asymmetry, while the SNR for the higher harmonics behaves non-monotonically as the system asymmetry varies.

关 键 词：stochastic resonance asymmetric mono-stable system signal-to-noise ratio 

分 类 号：TN912.34[电子电信—通信与信息系统] TU990.3[电子电信—信息与通信工程]