Introducing erasures in decision-feedback equalization to reduce error propagation

Author

Chiani, Marco

Author_Institution

Dipt. di Elettronica Inf. e Sistemistica, Bologna Univ., Italy

Volume

45

Issue

7

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

757

Lastpage

760

Abstract

A simple modification of the decision feedback equalizer (DFE) slicer is proposed to reduce the effect of error propagation. A comparison of the performance of the modified DFE and conventional DFE is made for specific channels. On these channels, the modified DFE performs only marginally better than the conventional DFE in terms of average error probability, but may offer some advantages in terms of error probability conditioned on specific input sequences and in terms of the distribution of error burst lengths. Some examples are given, concerning binary PAM and multilevel quadrature amplitude modulation (M-QAM) systems

Keywords

binary sequences; coding errors; decision feedback equalisers; probability; pulse amplitude modulation; quadrature amplitude modulation; telecommunication channels; DFE slicer; M-QAM systems; average error probability; binary PAM; channels; conventional DFE; decision-feedback equalization; erasures; error burst length distribution; error propagation reduction; input sequences; modified DFE; multilevel quadrature amplitude modulation; system performance; Computer simulation; Decision feedback equalizers; Digital communication; Error probability; Feedback loop; Filters; Intersymbol interference; Quadrature amplitude modulation; State feedback; System performance;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.602577

Filename

602577