Multi-level decision feedback equalization: an efficient realization of FDTS/DF

Author

Kenney, J.G. ; Wood, R.

Author_Institution

Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA

Volume

31

Issue

2

fYear

1995

fDate

3/1/1995 12:00:00 AM

Firstpage

1115

Lastpage

1120

Abstract

Multi-level decision feedback equalization (MDFE) is a detection technique which achieves equivalent error rate performance to fixed-delay tree search with decision feedback equalization, while using the simpler architecture of decision feedback equalization. The desired equalization target in MDFE is accommodated by a low order IIR filter, thereby suggesting that all of the forward filtering can be done with continuous-time filters. A potentially low power architecture for MDFE will be described which includes circuit considerations for the phase and gain detectors.<>

Keywords

IIR filters; continuous time filters; decision feedback equalisers; hard discs; magnetic recording noise; tree searching; FDTS/DF; continuous-time filters; equalization target; equivalent error rate performance; fixed-delay tree search; forward filtering; gain detectors; hard disk drives; low order IIR filter; low power architecture; multi-level decision feedback equalization; phase detectors; Circuits; Costs; Decision feedback equalizers; Degradation; Detectors; Digital filters; Finite impulse response filter; IIR filters; Maximum likelihood detection; Signal resolution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.364794

Filename

364794