Title :
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
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;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342370
