Signal filtering using frequency encoding and the time-frequency plane

Author

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

Author_Institution

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

fYear

1993

fDate

1-3 Nov 1993

Firstpage

1459

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 and prediction theory; iterative methods; parameter estimation; polynomials; signal detection; time-frequency analysis; IF analysis techniques; TFPF scheme; encoding; frequency encoding; general iterative time-frequency peak filtering; instantaneous frequency; noisy signals; nonstationary signals; polynomial phase coefficients; real signal; recovery of signals; time-frequency plane; Additive noise; Encoding; Filtering; Frequency estimation; Iterative methods; Noise level; Nonlinear filters; Phase estimation; Phase noise; Polynomials; Signal analysis; Signal processing; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

0-8186-4120-7

Type

conf

DOI

10.1109/ACSSC.1993.342370

Filename

342370