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Type: Journal article
Title: Weak signal detection: condition for noise induced enhancement
Author: Duan, F.
Chapeau-Blondeau, F.
Abbott, D.
Citation: Digital Signal Processing, 2013; 23(5):1585-1591
Publisher: Academic Press Inc Elsevier Science
Issue Date: 2013
ISSN: 1051-2004
Statement of
Fabing Duan, François Chapeau-Blondeau, Derek Abbott
Abstract: For the detection of a weak known signal in additive white noise, a generalized correlation detector is considered. In the case of a large number of measurements, an asymptotic efficacy is analytically computed as a general measure of detection performance. The derivative of the efficacy with respect to the noise level is also analytically computed. Positivity of this derivative is the condition for enhancement of the detection performance by increasing the level of noise. The behavior of this derivative is analyzed in various important situations, especially showing when noise-enhanced detection is feasible and when it is not.
Keywords: Noise induced enhancement
Noise-enhanced detection
Stochastic resonance
Signal detection
Rights: Copyright © 2013 Elsevier Inc. All rights reserved.
DOI: 10.1016/j.dsp.2013.05.009
Appears in Collections:Aurora harvest
Electrical and Electronic Engineering publications

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