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Type: Journal article
Title: Signal detection for frequency-shift keying via short-time stochastic resonance
Author: Duan, F.
Abbott, D.
Citation: Physics Letters A, 2005; 344(6):401-410
Publisher: Elsevier Science BV
Issue Date: 2005
ISSN: 0375-9601
Statement of
Fabing Duan and Derek Abbott
Abstract: A series of short-time stochastic resonance (SR) phenomena, realized in a bistable receiver, can be utilized to detect a train of information represented by signals that adopt frequency-shift keying (FSK). It is demonstrated that the values of noise intensity at resonance regions are close for adjacent periodic signals with an appropriate frequency separation. This establishes the possibility of decoding subthreshold or slightly suprathreshold M-ary FSK signals in bistable receivers. Furthermore, the mechanism of FSK signal detection via short-time SR effects is elucidated in terms of the receiver response speed. This phenomenon provides a possible mechanism for information processing in a bistable device operating in nonstationary noisy environments, where even the inputs appear over a short timescale or have a frequency shift.
Keywords: Bistable receiver; Short-time stochastic resonance; Frequency-shift keying; Receiver response speed
RMID: 0020051473
DOI: 10.1016/j.physleta.2005.06.113
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Appears in Collections:Electrical and Electronic Engineering publications

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