An analysis of noise enhanced information transmission in an array of comparators

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dc.contributor.authorMcDonnell, M.
dc.contributor.authorAbbott, D.
dc.contributor.authorPearce, C.
dc.contributor.otherSchool of Electrical and Electronic Engineering
dc.date.issued2002
dc.description.abstractAn array of N comparators subject to the same input signal and independent additive noise, with the outputs from each comparator summed, is a useful noise model for a range of systems including flash analog-to-digital converters, Digital Multibeam Steering sonar arrays and parallel neurons. It has previously been shown that for certain threshold configurations the transmitted information through such an array is maximised for non-zero noise. This behaviour has been termed Suprathreshold Stochastic Resonance (SSR) [1] and in this paper we show that SSR occurs for a number of different signal and noise distributions. Also presented is an analysis of the variance of the quantisation error incurred when all thresholds are set equal to the signal mean, for Gaussian and uniform distributions. It is shown that the minimum error variance is given by a non-zero value of noise.
dc.description.urihttp://www.elsevier.com/wps/find/journaldescription.cws_home/405904/description#description
dc.identifier.citationMicroelectronics Journal, 2002; 33(12):1079-1089
dc.identifier.doi10.1016/S0026-2692(02)00113-1
dc.identifier.issn0026-2692
dc.identifier.issn1879-2391
dc.identifier.orcidMcDonnell, M. [0000-0002-7009-3869]
dc.identifier.orcidAbbott, D. [0000-0002-0945-2674]
dc.identifier.urihttp://hdl.handle.net/2440/2439
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.source.urihttps://doi.org/10.1016/s0026-2692(02)00113-1
dc.subjectComparator
dc.subjectThreshold device
dc.subjectOptimal quantisation
dc.subjectDigital multibeam steering
dc.subjectFlash
dc.subjectADC
dc.subjectTransmitted information
dc.subjectMutual information
dc.subjectStochastic resonance
dc.subjectSuprathreshold stochastic resonance
dc.subjectNeuron model
dc.subjectDithering
dc.titleAn analysis of noise enhanced information transmission in an array of comparators
dc.typeJournal article
pubs.publication-statusPublished

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