Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/2439
Citations | ||
Scopus | Web of ScienceĀ® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | An analysis of noise enhanced information transmission in an array of comparators |
Author: | McDonnell, M. Abbott, D. Pearce, C. |
Citation: | Microelectronics Journal, 2002; 33(12):1079-1089 |
Publisher: | Elsevier Sci Ltd |
Issue Date: | 2002 |
ISSN: | 0026-2692 1879-2391 |
Contributor: | School of Electrical and Electronic Engineering |
Abstract: | An 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. |
Keywords: | Comparator Threshold device Optimal quantisation Digital multibeam steering Flash ADC Transmitted information Mutual information Stochastic resonance Suprathreshold stochastic resonance Neuron model Dithering |
DOI: | 10.1016/S0026-2692(02)00113-1 |
Description (link): | http://www.elsevier.com/wps/find/journaldescription.cws_home/405904/description#description |
Published version: | http://dx.doi.org/10.1016/s0026-2692(02)00113-1 |
Appears in Collections: | Applied Mathematics publications Aurora harvest 6 Electrical and Electronic Engineering publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.