Time-frequency peak filtering applied to FSK signals

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Time-frequency peak filtering applied to FSK signals

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Title: Time-frequency peak filtering applied to FSK signals
Author: Roessgen, M; Boashash, B
Abstract: This paper considers the problem of non-coherent detection of M-ary frequency-shift-keyed signals embedded in white Gaussian noise. The time-frequency peak filter (TFPF) is suggested as a technique to improve the signal-to-noise ratio of these signals before detection. First the method of TFPF is briefly reviewed and it is shown that TFPF is in general biased when the peak of the Wigner-Ville distribution (WVD) is used to estimate the signal instantaneous frequency. Then criteria are given for determining the reduced bias pseudo WVD window length which allows for practical implementation. Finally we demonstrate using simulations, the effectiveness of TFPF for improving non-coherent detection of MFSK signals.
Description: This paper uses of time-frequency peak filters (TFPF) for filtering additive noise from M-ary frequency-shift-keyed (MFSK) signals in non-coherent detection with improved performance. (Additional details can be found in the comprehensive book on Time-Frequency Signal Analysis and Processing (see http://www.elsevier.com/locate/isbn/0080443354). In addition, the most recent upgrade of the original software package that calculates Time-Frequency Distributions and Instantaneous Frequency estimators can be downloaded from the web site: www.time-frequency.net. This was the first software developed in the field, and it was first released publicly in 1987 at the 1st ISSPA conference held in Brisbane, Australia, and then continuously updated).
URI: http://hdl.handle.net/10576/10772
Date: 1994-10

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