THE EFFECT OF MR HEAD NONLINEARITY ON MDFE AND PRML PERFORMANCE

Authors
LIU B LEE YX MUTOH H GARG HK
Citation
B. Liu et al., THE EFFECT OF MR HEAD NONLINEARITY ON MDFE AND PRML PERFORMANCE, IEEE transactions on magnetics, 33(5), 1997, pp. 2764-2766
Citations number
5
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
33
Issue
5
Year of publication
1997
Part
1
Pages
2764 - 2766
Database
ISI
SICI code
0018-9464(1997)33:5<2764:TEOMHN>2.0.ZU;2-S
Abstract
The detection performance of multi-level decision feedback equalizatio n (MDFE) and partial response with maximum likelihood detection (PRML) in the presence of magnetoresistive (MR) head nonlinearity is investi gated through simulation. Two models are used to characterize the MR h ead nonlinearity: (1) a transfer function curve based on measurement a nd (2) a 3rd-order polynomial model. The results indicate that MDFE is more robust to MR head nonlinearity than PRML, especially to head sat uration.