Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/87557
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dc.contributor.authorMcDonnell, M.en
dc.date.issued2009en
dc.identifier.citationPhysical Review E, 2009; 79(4):041107-1-041107-8en
dc.identifier.issn1539-3755en
dc.identifier.issn1550-2376en
dc.identifier.urihttp://hdl.handle.net/2440/87557-
dc.description.abstractStochastic pooling networks (SPN) are sensor networks where multiple sensors make independently noisy and compressed measurements of the same information source, which are combined via pooling. Examples of SPNs range from nanoelectronics to biological sensory neurons. Here it is shown that optimal information transmission in SPNs with nodes that quantize to a finite number of states requires the input signal distribution to be discrete. This is illustrated numerically for a simple SPN consisting of N binary-quantizing sensors. The resultant information capacity is shown to be independent of the noise distribution when the signal distribution can be freely chosen, but to imply an optimal noise distribution if the signal distribution is fixed. While larger than the best performance of previously studied continuously valued input signals, the capacity does not scale faster than the previous best result of log_{2}(sqrt[N]) bits per channel use. It is also shown that a plot of the optimal input distribution contains bifurcations as N increases, and that suprathreshold stochastic resonance occurs when the mutual information is determined for a suboptimal noise distribution.en
dc.description.statementofresponsibilityMark D. McDonnellen
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.rights© 2009 The American Physical Societyen
dc.titleInformation capacity of stochastic pooling networks is achieved by discrete inputsen
dc.typeJournal articleen
dc.identifier.rmid0030013331en
dc.identifier.doi10.1103/PhysRevE.79.041107en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP0770747en
dc.identifier.pubid72251-
pubs.library.collectionElectrical and Electronic Engineering publicationsen
pubs.library.teamDS02en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
Appears in Collections:Electrical and Electronic Engineering publications

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