Modeling of Off-Track BER Performance of AMR and GMR Heads

Weichun YE  Bin LIU  Yu LIN  

IEICE TRANSACTIONS on Electronics   Vol.E83-C   No.9   pp.1500-1504
Publication Date: 2000/09/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Selected Papers from the 4th Asian Symposium for Information Storage Technology)
magnetic recording,  magnetic modeling,  magnetic measurement,  off-track,  

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As the track becomes narrower, the effects of track edge become more significant. These effects, such as the amplitude reduction, variations in the shape of the isolated pulse, the partial erasure and the amplitude asymmetry, are dependent on head/disk combination and the off-track position. These relationships are discussed in detail in this paper. More importantly, an off-track model is proposed to study the off-track BER performance for the head with narrow track width. The BER performances of EPRML channel for different off-track cases and different head/media combinations are studied based on this model. Simulation results have proved that this model is a useful tool for simulation of system performance.