Filtering real signals through frequency modulation and peak detection in the time-frequency plane

Author

Arnold, Morgan J. ; Roessgen, Mark ; Boashash, Boualem

Author_Institution

Queensland Univ. of Technol., Brisbane, Qld., Australia

fYear

1994

fDate

19-22 Apr 1994

Abstract

A novel technique for filtering a real signal is presented. The method is based upon encoding the signal as an instantaneous frequency (IF) and using IF analysis techniques to recover a filtered version of it. A general iterative time-frequency peak filtering (TFPF) scheme based on this method is formulated. Simulations are given which show extremely clean recovery of signals in noise levels down to -9 dB. Applications to estimating the polynomial phase coefficients of nonstationary signals and differentiating noisy signals are presented

Keywords

encoding; filtering theory; frequency modulation; iterative methods; noise; signal detection; time-frequency analysis; frequency modulation; instantaneous frequency analysis; iterative time-frequency peak filtering; noise levels; noisy signals; nonstationary signals; peak detection; polynomial phase coefficients; real signals filtering; signal encoding; signal recovery; simulations; time-frequency plane; Encoding; Filtering; Frequency modulation; Iterative methods; Noise level; Phase estimation; Phase noise; Polynomials; Signal analysis; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.390019

Filename

390019