Noise Characterization in High-Areal Density Perpendicular and Shingled Magnetic Recording

• Published in: IEEE transactions on magnetics Vol. 50; no. 3; pp. 67 - 73
• Main Authors: Galbraith, Richard, Hanson, Weldon, Lengsfield, Byron, Oenning, Travis, Jihoon Park, Salo, Michael
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.03.2014; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 2-D magnetic recording (TDMR); adjacent track erasure; channel modeling; Cross-disciplinary physics: materials science; rheology; Density; Electric breakdown; Electronics; Equations; Exact sciences and technology; Gain; Interference; Magnetic heads; Magnetic recording; Magnetic resonance imaging; Magnetism; Materials science; Media; Noise; noise analysis; Noise measurement; Other topics in materials science; pattern dependent noise predictive (PDNP); perpendicular magnetic recording (PMR); Physics; shingled magnetic recording (SMR); Variance; variance deconvolution; viterbi detection; variance deconvolution; channel modeling; shingled magnetic recording (SMR); adjacent track erasure; 2-D magnetic recording (TDMR); Density; perpendicular magnetic recording (PMR); noise analysis; Viterbi detection; pattern dependent noise predictive (PDNP); Modelling; Magnetic recording; Magnetic properties

In this paper, we present a technique of noise analysis for perpendicular and shingled magnetic recording that is variance centric, i.e., with analysis focused on noise power. Measured noise from a home track viewpoint is decomposed into electronic noise, transition noise, nontransition noise, and i...