Title :
Error event analysis of EPR4 and ME2PR4 channels: captured head signals versus Lorentzian signal models
Author :
Xu, Catherine ; Keirn, Zak
Author_Institution :
Texas Instrum., Longmont, CO, USA
fDate :
9/1/2000 12:00:00 AM
Abstract :
Spin-stand error event analysis is conducted for EPR4 and modified E2PR4 (ME2PR4) channels. The error event distributions for 16/17 random code and 16/17 QMTR code at user bit densities (UBD) of 2.5, 3.0 and 3.5 were investigated. Captured spin-stand waveforms were processed through a software channel and the error events were analyzed. The distribution of error events for spin-stand data is compared to the conventional Lorentzian model for 100% AWGN noise colored by the equalizer and for the 100% jitter noise case. Results show that neither Lorentzian model accurately predicts the spin-stand results by themselves or as a mix; however by considering the two extreme models, all the major error events are accounted for
Keywords :
AWGN; digital magnetic recording; jitter; magnetic disc storage; magnetic recording noise; partial response channels; 16/17 QMTR code; 16/17 random code; AWGN noise; EPR4 channels; Lorentzian signal models; ME2PR4 channels; captured head signals; jitter noise; spin-stand error event analysis; user bit densities; AWGN; Additive white noise; Colored noise; Detectors; Error analysis; Gaussian noise; Magnetic heads; Magnetic noise; Predictive models; Signal analysis;
Journal_Title :
Magnetics, IEEE Transactions on
