| Issue |
Europhys. Lett.
Volume 50, Number 4, May II 2000
|
|
|---|---|---|
| Page(s) | 427 - 433 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2000-00287-1 | |
| Published online | 01 September 2002 | |
Noise-sustained signal propagation
1
Departament de Física i Enginyeria Nuclear,
Universitat Politècnica de Catalunya
Colom 11, E-08222 Terrassa, Spain
2
Departament de Física Aplicada,
Universitat Politècnica de Catalunya
Av. Gregorio Marañon 44, E-08034 Barcelona, Spain
3
Departament de Química Física,
Universitat de Barcelona Diagonal 647, E-08028 Barcelona, Spain
4
Departament d'Estructura i Constituents de la Matèria,
Facultat de Física Universitat de Barcelona -
Diagonal 647, E-08028 Barcelona, Spain
Received:
6
December
1999
Accepted:
16
March
2000
A simple model of a stochastic bistable medium is analytically shown to exhibit pulse propagation sustained by external spatiotemporal noise. In particular, signal transmission is seen to be optimal for a certain nonzero value of the noise intensity, which can be determined theoretically. Numerical simulations confirm the analytical predictions. This property of noise enables the use of the bistable medium as an information channel through which a continuous (in general nonperiodic) string of bits can be transmitted.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 05.45.-a – Nonlinear dynamics and nonlinear dynamical systems
© EDP Sciences, 2000
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