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Telecommunications and Radio Engineering

ISSN for PRINT: 0040-2508

Institutional price:	$4518.00
Issues per year:	20

Best Paper Award Selection - Editorial Board Site

2008, Volume67

95 pages

Issue price - $271.00

Removal of Mixed Poisson and Impulse Noise in 1-D Signals by Non-Adaptive and Adaptive Nonlinear Filters

V. V. Lukin
Department of Transmitters, Receivers and Signal Processing, National Aerospace University, Chkalova Str. 17, 61070 Kharkiv, Ukraine

S. Peltonen
Institute of Signal Processing, Tampere University of Technology, Tampere, Finland

P. Ye. Yeltsov
National Aerospace University (Kharkov Aviation Institute), Kharkov, Ukraine

S. K. Abramov
Department of Transmitters, Receivers and Signal Processing, National Aerospace University, Chkalova Str. 17, 61070 Kharkiv, Ukraine

A. N. Besedin
National Aerospace University (Kharkov Aviation Institute), Kharkov, Ukraine

J. T. Astola
Tampere University of Technology, Signal Processing Laboratory, P. O. Box 553, FIN-33101, Tampere, Finland

ABSTRACT

A case of filtering 1-D signals corrupted by the Poisson fluctuative and impulse noise is considered. Statistical characteristics of output signals are analyzed for several conventional nonlinear non-adaptive filters. It is shown that output bias can be present and it depends upon the filter type, scanning window size and information content of the processed signal. Residual noise variance is also derived and studied. A soft-switching locally adaptive filter that takes into account the observed statistics is proposed and tested.