New detector for 1,k codes equalized to class II partial response

Author

Wood, Roger

Author_Institution

IBM, San Jose, CA, USA

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

4075

Lastpage

4077

Abstract

A modified linear canceller is described which approached maximum-likelihood performance for a 1,k RLL code on a PR2 (class II partial response) channel. With white noise, this detector gains 1.8 dB over simple threshold detection. Performance is analyzed both theoretically and through bit-by-bit simulations for a variety of noise colorations and misequalization conditions. The technique is applicable wherever the channel is equalized to a low-pass characteristic as in instrumentation and video tape recording with Miller-squared code or optical recording with a 1,7 code and pulse-width modulation

Keywords

codes; magnetic recording; signal detection; white noise; 1,7 code; 1,k RLL code; Miller-squared code; bit-by-bit simulations; class II partial response; low-pass characteristic; magnetic recording channel; maximum-likelihood performance; misequalization conditions; modified linear canceller; noise colorations; optical recording; pulse-width modulation; video tape recording; white noise; Analytical models; Colored noise; Detectors; Gain; Maximum likelihood detection; Noise cancellation; Optical noise; Optical recording; Performance analysis; White noise;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42527

Filename

42527