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Error event analysis of EPR4 and ME2PR4 channels: captured head signals versus Lorentzian signal models

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2 Author(s)
Xu, C. ; Texas Instrum., Longmont, CO, USA ; Keirn, Z.

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

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Magnetics, IEEE Transactions on  (Volume:36 ,  Issue: 5 )