Impulse-induced optimum signal amplification in scale-free networks

Martínez Ovejas, Pedro Jesús; Chacón, R.

doi:10.1103/PhysRevE.93.042311

Impulse-induced optimum signal amplification in scale-free networks

Martínez Ovejas, Pedro Jesús (Universidad de Zaragoza) ; Chacón, R.

Resumen: Optimizing information transmission across a network is an essential task for controlling and manipulating generic information-processing systems. Here, we show how topological amplification effects in scale-free networks of signaling devices are optimally enhanced when the impulse transmitted by periodic external signals (time integral over two consecutive zeros) is maximum. This is demonstrated theoretically by means of a star-like network of overdamped bistable systems subjected to generic zero-mean periodic signals and confirmed numerically by simulations of scale-free networks of such systems. Our results show that the enhancer effect of increasing values of the signal''s impulse is due to a correlative increase of the energy transmitted by the periodic signals, while it is found to be resonant-like with respect to the topology-induced amplification mechanism.
Idioma: Inglés
DOI: 10.1103/PhysRevE.93.042311
Año: 2016
Publicado en: PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 93, 4 (2016), 042311[6 pp]
ISSN: 1539-3755
Financiación: info:eu-repo/grantAgreement/ES/DGA/E19
Financiación: info:eu-repo/grantAgreement/ES/FIS/2014-55867-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2012-34902
Tipo y forma: Article (Published version)
Área (Departamento): Física Aplicada (Departamento de Física Aplicada)
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Impulse-induced optimum signal amplification in scale-free networks