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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

2004, Volume61

551 pages

DOI: 10.1615/TelecomRadEng.v61.i7

Issue price - $1182.00

Removal of α-Stable Noise in Frequency Modulated Signals Using Robust DFT Forms

I. Djurovic
University of Montenegro, 81000 Podgorica, Serbia & Montenegro

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

A. A. Roenko
N.Y. Zhukovsky National Aerospace University "KhAI" 17, Chkalova Str., Kharkiv, 61070, Ukraine

ABSTRACT

A task of filtering (denoising) of high-pass signals corrupted by heavy tail (α-stable) noise is considered. For this purpose, several techniques based on the robust DFT forms have been proposed recently. In this paper we study various approaches for design of the robust DFT and compare their performance for frequency-modulated (FM) signals. In particular, we consider the DFT estimates based on the linear combination of order statistics (L-estimate), myriad, Wilcoxon and Hodges-Lehman estimates. Possible strategies for selection of parameters in these robust estimation schemes are studied. Moreover, a new hard-switching adaptive robust estimate is proposed and tested.