Performance robustness of a noise-assisted transmission line

In this paper we analyze the stochastic-resonant behavior of a chain of forward-coupled bistable overdamped oscillators used as a transmission line with possible applications to neurophysiology, information transmission and storage. We drive the line with a random sequence of non-return-to-zero bits...

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Bibliographic Details
Published in:Physica. D 2009-11, Vol.238 (21), p.2138-2141
Main Authors: Ibáñez, S.A., Fierens, P.I., Perazzo, R.P.J., Grosz, D.F.
Format: Article
Language:English
Subjects:
BER
Communication systems
Exact sciences and technology
Physics
SNR
Stochastic resonance
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Summary:In this paper we analyze the stochastic-resonant behavior of a chain of forward-coupled bistable overdamped oscillators used as a transmission line with possible applications to neurophysiology, information transmission and storage. We drive the line with a random sequence of non-return-to-zero bits and each oscillator is independently perturbed by noise. The line is analyzed for varying coupling strengths that lead to different regimes, ranging from noise-supported to coupling-supported transmission. We characterize the transmission performance by parameters such as output bit error rate and delivered signal-to-noise ratio, and show them to improve and remain flat for a broad range of noise intensities in all coupling regimes. In particular, we found that this system exhibits an enhanced robustness as compared to a linear transmission channel impaired only by additive noise.
ISSN:0167-2789
1872-8022
DOI:10.1016/j.physd.2009.08.012