A generalized frequency domain nonlinearity measurement method

Author

Che, Xiaodong ; Peek, Michael J. ; Fitzpatrick, James

Author_Institution

Quantum Corp., Milpitas, CA, USA

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4236

Lastpage

4238

Abstract

In this paper, we discuss an accurate and effective nonlinearity measurement method that is generalized from the frequency domain method proposed by Y.S. Tang and C. Tsang(1991). The new method discussed here offers the following features. It can test any recording density by observing only one fixed frequency. This method can be used to study nonlinearities due to interactions between two transition groups such as a tribit interacting with a single transition. By following a general rule given in this paper, one can construct a recording pattern that simultaneously satisfies code constraints and allows the measurement of nonlinearities. Therefore, it allows a nonlinearity measurement on a HDA

Keywords

frequency-domain analysis; hard discs; partial response channels; PRML system; code constraints; fixed frequency; frequency domain nonlinearity measurement; hard disks; recording density; recording pattern; transition groups; tribit; Degradation; Detectors; Distortion measurement; Frequency domain analysis; Frequency measurement; Maximum likelihood detection; Modulation coding; Nonlinear distortion; Testing; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334046

Filename

334046