Matched median filter for detecting QAM signals

Author

Liu, Qin ; Astola, Jaakko ; Neuvo, Yrjoö

Author_Institution

Signal Process. Lab., Tampere Univ. of Technol., Finland

Volume

43

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

7

Lastpage

10

Abstract

In this paper, the complex matched median filter (MMF) is developed for QAM signal detection. It is shown that the MMF is robust against impulsive type noise. By combining the MMF and the linear matched filter (LMF), an extended class of matched filters is introduced. These filters combine the desirable properties of MMF and LMF and behave well in varying noise environments. Computer simulations demonstrate that the proposed detectors give a much smaller symbol error probability than the LMF when the noise has an impulsive component and produces only a slight performance degradation in the case of pure Gaussian noise

Keywords

Gaussian noise; filtering theory; matched filters; median filters; probability; quadrature amplitude modulation; signal detection; white noise; AWGN; QAM signal detection; additive white Gaussian noise; complex matched median filter; computer simulations; impulsive type noise; linear matched filter; matched median filter; noise environments; symbol error probability; Computer simulation; Degradation; Detectors; Error probability; Gaussian noise; Matched filters; Noise robustness; Quadrature amplitude modulation; Signal detection; Working environment noise;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.385950

Filename

385950