Performance evaluation of decision feedback equalization for the Lorentzian channel

Author

Fossorier, Marc P C

Author_Institution

Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA

Volume

32

Issue

2

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

309

Lastpage

315

Abstract

Recently, equalization and detection techniques have been applied to the magnetic recording channel. For medium to high normalized recording densities (S⩾2), decision feedback equalization (DFE) represents the only performant equalization method. Despite many proposed schemes, no specific analytical performance has been evaluated yet when applying DFE to the recording channel. In this paper, we derive both the zero forcing (ZF) and the mean square error (MSE) performance measures for DFE to the Lorentzian channel. Simple expressions have been found and allow us to determine from which recording density the MMSE-DFE significantly outperforms the ZF-DFE. These expressions have also revealed to be useful to evaluate the loss induced when combining coding and DFE for the Lorentzian channel

Keywords

channel coding; decision feedback equalisers; error statistics; least mean squares methods; magnetic recording noise; telecommunication channels; Lorentzian channel; SNR; analytical performance; coding; decision feedback equalization; high normalized recording densities; loss; magnetic recording channel; mean square error performance measure; minimum mean squared error; performance evaluation; zero forcing performance measure; AWGN; Additive white noise; Autocorrelation; Decision feedback equalizers; Disk recording; Filters; Gaussian noise; Magnetic analysis; Magnetic recording; Performance analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.486513

Filename

486513