Stochastic resonance in two-frequency signal systems

被引：3
|
作者：
Song, Hui [1 ]
Huang, Shengming [2 ]
Liu, Xuemei [3 ]
机构：
[1] South China Normal Univ, Sch Phys & Telecommun Engn, Guangzhou 510006, Guangdong, Peoples R China
[2] Grp Biol, Hongan Yizhong 438400, Huanggang, Peoples R China
[3] South China Normal Univ, Dept Phys, Guangzhou 510641, Guangdong, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2016年 / 30卷 / 18期
关键词：
Stochastic resonance; signal-to-noise ratio; two-frequency signal systems; BISTABLE SYSTEMS; LINEAR-SYSTEM; DRIVEN; TRANSITIONS; MECHANISM; ESCAPE;
D O I：
10.1142/S0217979216501137
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Signal-to-noise ratio (SNR) in two-frequency signal systems is investigated in the presence of the correlated multiplicative and white additive noises. From the Wiener Khinchin theorem, the exact expression of the SNR is obtained. It is found that stochastic resonance (SR) appears when two frequencies are almost the same, while SR gradually disappears when the frequency difference increases. We also found that there exists an optimized value of the frequency at which SNR takes its maximal value.
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页数：12
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