Sensitive signal detection using a feed-forward oscillator network

Nick McCullen, Tom Mullin, Marty Golubitsky

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

We present the results of an experimental investigation of a network of nonlinear coupled oscillators which are coupled in feed-forward mode. By exploiting the nonlinear response of each oscillator near its intrinsic Hopf bifurcation point, we have found remarkable amplification of small signals over a narrow bandwidth with a large dynamic range. The effect is exploited to extract a small amplitude periodic signal from an input time series which is dominated by noise. Specifically, we have used this relatively simple experimental system to measure responses with a bandwidth of ∼1% of the central frequency, amplifications of ∼60  dB, and a dynamic range of ∼80  dB and can extract signals from a time series with a signal to noise ratio of ∼-50  dB.
Original languageEnglish
Pages (from-to)254101
Number of pages4
JournalPhysical Review Letters
Volume98
Issue number25
DOIs
Publication statusPublished - 22 Jun 2007

Keywords

  • Signal Processing
  • audition
  • Oscillators (electronic)

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