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Instantaneous phase of the autocorrelation and robustness to signal-dependent noise

Chandran, Vinod (1997) Instantaneous phase of the autocorrelation and robustness to signal-dependent noise. In TENCON '97 Proceedings of IEEE Region 10 Annual Conference on Speech and Image Technologies for Computing and Telecommunications, IEEE, Brisbane, Australia, pp. 831-834.

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Abstract

The phase of an analytic signal constructed from the autocorrelation function of a signal contains significant information about the shape of the signal. Using Bedrosian's (1963) theorem for the Hilbert transform it is proved that this phase is robust to multiplicative noise if the signal is baseband and the spectra of the signal and the noise do not overlap. Higher-order spectral features are interpreted in this context and shown to extract nonlinear phase information while retaining robustness. The significance of the result is that prior knowledge of the spectra is not required.

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ID Code: 46485
Item Type: Conference Paper
Keywords: Additive noise, Autocorrelation, Discrete Fourier transforms, Multi-stage noise shaping, Noise robustness, Noise shaping, Phase noise, Shape, Signal analysis, Signal processing
DOI: 10.1109/TENCON.1997.648552
ISBN: 0780343654
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Signal Processing (090609)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 1997 Please consult the authors.
Deposited On: 17 Oct 2011 08:39
Last Modified: 21 Oct 2011 11:47

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