Noise-enhanced propagation in a dissipative chain of triggers

Saverio Morfu (1) , J.C. Comte (1) , Jean-Marie Bilbault (1) , Patrick Marquié (1)

1 Le2i - Laboratoire Electronique, Informatique et Image [UMR6306]

We study the influence of spatiotemporal noise on the propagation of square waves in an electrical dissipative chain of triggers. By numerical simulation, we show that noise plays an active role in improving signal transmission. Using the Signal to Noise Ratio at each cell, we estimate the propagation length. It appears that there is an optimum amount of noise that maximizes this length. This specific case of stochastic resonance shows that noise enhances propagation.

Mots clés: nonlinear dynamics; noise enhanced propagation; stochastic resonance

Domaines: Electronique; Formation de Structures et Solitons [nlin.PS]; Analyse de données, Statistiques et Probabilités [physics.data-an]

Saverio Morfu, J.C. Comte, Jean-Marie Bilbault, Patrick Marquié. Noise-enhanced propagation in a dissipative chain of triggers. International journal of bifurcation and chaos in applied sciences and engineering , 2002, pp.629-633. ⟨10.1142/S0218127402004553⟩. ⟨hal-00651418⟩