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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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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|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|
|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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