Enhanced coding for exponentially distributed signals using suprathreshold stochastic resonance
Das, Aruneema, Stocks, Nigel G. and Hines, Evor. (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 1007-5704Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.cnsns.2007.07.013
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|
|Official Date:||January 2009|
|Number of Pages:||10|
|Page Range:||pp. 223-232|
|Access rights to Published version:||Restricted or Subscription Access|
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