GBP-based detection and symmetric information rate for rectangular-grain TDMR model

Mehrdad Khatami, Vida Ravanmehr, Bane V Vasic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Two dimensional magnetic recording (TDMR) is a new paradigm in data storage which envisions densities up to 10 Tb/in2 as a result of drastically reducing bit to grain ratio. In order to reach this goal aggressive write (shingled writing) and read process are used in TDMR. Kavcic et al. proposed a simple magnetic grain model called the granular tiling model which captures the essence of read/write process in TDMR. Capacity bounds for this model indicate that 0.6 user bit per grain densities are possible, however, previous attempt to reach capacities are not close to the channel capacity. In this paper, we provide a truly two-dimensional detection scheme for the granular tiling model based on generalized belief propagation (GBP). Factor graph interpretation of the detection problem is provided and formulated in this paper. Then, GBP is employed to compute marginal a posteriori probabilities for the constructed factor graph. Simulation results show huge improvements in detection. A lower bound on the symmetric information rate (SIR) is also derived for this model based on GBP detector.

Original languageEnglish (US)
Title of host publicationIEEE International Symposium on Information Theory - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1618-1622
Number of pages5
ISBN (Print)9781479951864
DOIs
StatePublished - 2014
Event2014 IEEE International Symposium on Information Theory, ISIT 2014 - Honolulu, HI, United States
Duration: Jun 29 2014Jul 4 2014

Other

Other2014 IEEE International Symposium on Information Theory, ISIT 2014
CountryUnited States
CityHonolulu, HI
Period6/29/147/4/14

Fingerprint

Information Rates
Belief Propagation
Magnetic recording
Factor Graph
Tiling
Model-based
Channel Capacity
Data Storage
Model
Channel capacity
Paradigm
Detector
Lower bound
Detectors
Data storage equipment
Simulation

ASJC Scopus subject areas

  • Applied Mathematics
  • Modeling and Simulation
  • Theoretical Computer Science
  • Information Systems

Cite this

Khatami, M., Ravanmehr, V., & Vasic, B. V. (2014). GBP-based detection and symmetric information rate for rectangular-grain TDMR model. In IEEE International Symposium on Information Theory - Proceedings (pp. 1618-1622). [6875107] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISIT.2014.6875107

GBP-based detection and symmetric information rate for rectangular-grain TDMR model. / Khatami, Mehrdad; Ravanmehr, Vida; Vasic, Bane V.

IEEE International Symposium on Information Theory - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2014. p. 1618-1622 6875107.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Khatami, M, Ravanmehr, V & Vasic, BV 2014, GBP-based detection and symmetric information rate for rectangular-grain TDMR model. in IEEE International Symposium on Information Theory - Proceedings., 6875107, Institute of Electrical and Electronics Engineers Inc., pp. 1618-1622, 2014 IEEE International Symposium on Information Theory, ISIT 2014, Honolulu, HI, United States, 6/29/14. https://doi.org/10.1109/ISIT.2014.6875107
Khatami M, Ravanmehr V, Vasic BV. GBP-based detection and symmetric information rate for rectangular-grain TDMR model. In IEEE International Symposium on Information Theory - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2014. p. 1618-1622. 6875107 https://doi.org/10.1109/ISIT.2014.6875107
Khatami, Mehrdad ; Ravanmehr, Vida ; Vasic, Bane V. / GBP-based detection and symmetric information rate for rectangular-grain TDMR model. IEEE International Symposium on Information Theory - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2014. pp. 1618-1622
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