Frequency sensitivity of sub-excitable systems coupled with different topology

Li Si-Hao; Wang Hong-Li; Ouyang Qi

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Frequency sensitivity of sub-excitable systems coupled with different topology

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摘要

We have investigated numerically the behaviours of identical FitzHugh-Nagumo systems, which are coupled into topologies of regular one-dimensional lattice, small-world network and scale-free network, and driven by white noise and an external signal. We found that when a number of uniform systems are coupled into a network, the system's signal-to-noise ratio remains at a high level in a wider frequency range than in the case of a single oscillator. Different architectures manifest different impact, with the scale-free network being the most remarkable. Results presented here suggest a possible approach to improve the sensitivity of a system to external signals and are helpful for designing communication equipments.

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《中国物理：英文版》 |2004年第4期|448-453|共6页
作者
Li Si-Hao; Wang Hong-Li; Ouyang Qi;
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作者单位

Department of Physics, Peking University, Beijing 100871, China;

Department of Physics, Peking University, Beijing 100871, China;

Department of Physics, Peking University, Beijing 100871, China;

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原文格式 PDF
正文语种 chi
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关键词
frequency sensitivity; coupled systems; stochastic resonance; scale-free network; small world network; FitzHugh-Nagumo;

机译：频率灵敏度;耦合系统;随机共振;无标度网络;小世界网络;FitzHugh-Nagumo;

Frequency sensitivity of sub-excitable systems coupled with different topology

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