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Enhanced coding for exponentially distributed signals using suprathreshold stochastic resonance
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Das, Aruneema, Stocks, Nigel G. and Hines, Evor, 1957-. (2009) Enhanced coding for exponentially distributed signals using suprathreshold stochastic resonance. Communications in Nonlinear Science and Numerical Simulation, Vol.14 (No.1). pp. 223-232. ISSN 1007-5704
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Official URL: http://dx.doi.org/10.1016/j.cnsns.2007.07.013
Abstract
Our previous work on stochastic resonance (SR) in threshold based systems proved that the SR effect is dependent oil the nature of the input signal distribution; more specifically, for certain types of signal distribution SR is not observed [Das A, Stocks NG, Nikitin A, Hines EL. Quantifying stochastic resonance in a single threshold detector for random aperiodic signals. Fluctuation Noise Lett 2004;4:L247-65]. Here we show that suprathreshold stochastic resonance (SSR) - a novel and distinct form of SR - removes this limitation and hence leads to the conclusion that SSR can probably enhance the transmission of signals of any distribution and amplitude. SSR effects are studied in a parallel array of identical nonlinear threshold based devices. A double exponential signal distribution is chosen because this distribution did not demonstrate conventional SR effects in a single threshold device [Das A, Stocks NG, Nikitin A., Hines EL. Quantifying Stochastic resonance in a single threshold detector for random aperiodic signals. Fluctuation and Noise Letters 2004;4:L247-L265.]. SSR as a possible mechanism for enhancing transmission of speech signals in the human ear is also discussed. (C) 2007 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QA Mathematics T Technology > TJ Mechanical engineering and machinery Q Science > QC Physics |
| Divisions: | Faculty of Science > Engineering |
| Journal or Publication Title: | Communications in Nonlinear Science and Numerical Simulation |
| Publisher: | Elsevier Science BV |
| ISSN: | 1007-5704 |
| Date: | January 2009 |
| Volume: | Vol.14 |
| Number: | No.1 |
| Number of Pages: | 10 |
| Page Range: | pp. 223-232 |
| Identification Number: | 10.1016/j.cnsns.2007.07.013 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/29264 |
Data sourced from Thomson Reuters' Web of Knowledge
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