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Signal Processing and Coding Techniques for 2-D Magnetic Recording: An Overview

Garani, Shayan Srinivasa and Dolecek, Lara and Barry, John and Sala, Frederic and Vasic, Bane (2018) Signal Processing and Coding Techniques for 2-D Magnetic Recording: An Overview. In: PROCEEDINGS OF THE IEEE, 106 (2). pp. 286-318.

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Official URL: http://dx.doi.org/10.1109/JPROC.2018.2795961

Abstract

Two-dimensional magnetic recording (TDMR) is an emerging storage technology that aims to achieve areal densities on the order of 10 Tb/in 2, mainly driven by innovative channels engineering with minimal changes to existing head/ media designs within a systems framework. Significant additive areal density gains can be achieved by using TDMR over bit patterned media (BPM) and energy-assisted magnetic recording (EAMR). In TDMR, the sectors are inherently 2-D with reduced track pitch and bit widths, leading to severe 2-D intersymbol interference (ISI). This necessitates the development of powerful 2-D signal processing and coding algorithms for mitigating 2-D ISI, timing artifacts, jitter, and electronics noise resulting from irregular media grain positions and read-head electronics. The algorithms have to be eventually realized within a read/write channel architecture as a part of a system-on-chip (SoC) within the disk controller system. In this work, we provide a wide overview of TDMR technology, channel models and capacity, signal processing algorithms (detection and timing recovery), and error-correcting codes attuned to 2-D channels. The innovations and advances described not only make TDMR a promising future technology, but may serve a broader engineering audience as well.

Item Type: Journal Article
Additional Information: Copy right for the article belong to IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre: Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Depositing User: Id for Latest eprints
Date Deposited: 08 Mar 2018 19:07
Last Modified: 08 Mar 2018 19:07
URI: http://eprints.iisc.ac.in/id/eprint/59128

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