Timing recovery for the magnetic recording channel using the wave difference method

Author

Keane, John P. ; Hurst, Paul J.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of California, Davis, CA, USA

Volume

40

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

3102

Lastpage

3104

Abstract

Timing recovery using the wave difference method is proposed for use in a magnetic recording read channel. The scheme uses an oversampling ratio of two and is suitable for mixed-signal or digital implementations. A simple class of prefilter that significantly improves the signal-to-interference ratio of the generated timing-error estimate is described. This prefilter also allows a simple implementation based on an absolute value, rather than squaring or fourth-order nonlinearity. Simulation results for this scheme are presented for a range of recording densities and channel noise levels.

Keywords

magnetic recording; signal sampling; synchronisation; timing circuits; timing jitter; channel noise level; digital implementation; jitter; magnetic recording channel; magnetic recording read channel; mixed-signal implementation; oversampling; prefilter; recording density; signal-to-interference ratio; timing circuits; timing recovery; timing-error estimate; wave difference method; Clocks; Computer architecture; Detectors; Filters; Frequency; Magnetic recording; Phase locked loops; Signal generators; Timing; Very large scale integration; Jitter; magnetic recording; timing circuits;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.830187

Filename

1325746