A ternary coded magnetic recording system

Author

Krueger, Dan ; Cruz, J.R. ; He, Runsheng

Author_Institution

Sch. of Electr. Eng., Oklahoma Univ., Norman, OK, USA

Volume

1

fYear

1995

fDate

18-22 Jun 1995

Firstpage

638

Abstract

A method for implementing a magnetic recording system using a ternary Trumpis (1975) code is discussed and evaluated theoretically. The saturation recording technique is extended from two level recording to three level recording by using a nonoriented media state in conjunction with two oppositely oriented media states. A Lorentzian model of the magnetic recording channel is used to find the theoretical performance of the system. Rate 1 binary-to-ternary convolutional codes of constraint length 7 are found to provide an increase in the effective signal-to-noise ratio of the magnetic recording channel

Keywords

convolutional codes; digital magnetic recording; telecommunication channels; Lorentzian model; SNR; constraint length; digital magnetic recording; magnetic recording channel; nonoriented media state; oppositely oriented media states; rate 1 binary-to-ternary convolutional codes; saturation recording technique; signal-to-noise ratio; system performance; ternary Trumpis code; ternary coded magnetic recording system; theoretical performance; three level recording; two level recording; Convolutional codes; Density measurement; Digital magnetic recording; Error correction codes; Helium; Magnetic heads; Magnetic recording; Saturation magnetization; Timing; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2486-2

Type

conf

DOI

10.1109/ICC.1995.525245

Filename

525245