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dc.contributor.authorMatcha, Chaitanya Kumar
dc.contributor.authorRoy, Shounak
dc.contributor.authorBahrami, Mohsen
dc.contributor.authorVasic, Bane
dc.contributor.authorSrinivasa, Shayan Garani
dc.date.accessioned2018-07-17T16:47:38Z
dc.date.available2018-07-17T16:47:38Z
dc.date.issued2018-02
dc.identifier.citationC. K. Matcha, S. Roy, M. Bahrami, B. Vasic and S. G. Srinivasa, "2-D LDPC Codes and Joint Detection and Decoding for Two-Dimensional Magnetic Recording," in IEEE Transactions on Magnetics, vol. 54, no. 2, pp. 1-11, Feb. 2018. doi: 10.1109/TMAG.2017.2735181en_US
dc.identifier.issn0018-9464
dc.identifier.issn1941-0069
dc.identifier.doi10.1109/TMAG.2017.2735181
dc.identifier.urihttp://hdl.handle.net/10150/628243
dc.description.abstractTwo-dimensional magnetic recording (TDMR) is a promising technology for boosting areal densities (ADs) using sophisticated signal processing algorithms within a systems framework. The read/write channel architectures have to effectively tackle 2-D inter-symbol interference (ISI), 2-D synchronization errors, media and electronic noise sources, as well as thermal asperities resulting in burst erasures. The 1-D low-density parity check (LDPC) codes are well studied to correct large 1-D burst errors/erasures. However, such 1-D LDPC codes are not suitable for correcting 2-D burst errors/erasures due to the 2-D span of errors. In this paper, we propose construction of a native 2-D LDPC code to effectively correct 2-D burst erasures. We also propose a joint detection and decoding engine based on the generalized belief propagation algorithm to simultaneously handle 2-D ISI, as well as correct bit/burst errors for TDMR channels. This paper is novel in two aspects: 1) we propose the construction of native 2-D LDPC codes to correct large 2-D burst erasures and 2) we develop a 2-D joint signal detection-decoder engine that incorporates 2-D ISI constraints, and modulation code constrains along with LDPC decoding. The native 2-D LDPC code can correct >20% more burst erasures compared with the 1-D LDPC code over a 128 x 256 2-D page of detected bits. Also, the proposed algorithm is observed to achieve a signal-to-noise ratio gain of >0.5 dB in bit error rate performance (translating to 10% increase in ADs around the 1.8 Tb/in(2) regime with grain sizes of 9 nm) as compared with a decoupled detector-decoder system configuration over a small 2-D LDPC code of size 16 x 16. The efficacy of our proposed algorithm and system architecture is evaluated by assessing AD gains via simulations for a TDMR configuration comprising of a 2-D generalized partial response over the Voronoi media model assuming perfect 2-D synchronization.en_US
dc.description.sponsorshipIndo-US Science and Technology Forum under Grant JC-Data Storage Researchen_US
dc.language.isoenen_US
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCen_US
dc.relation.urlhttp://ieeexplore.ieee.org/document/8006231/en_US
dc.rightsCopyright © 2018, IEEEen_US
dc.subjectTDMR. LDPCen_US
dc.subject2D burst erasure correctionen_US
dc.subjectjoint detection-decodingen_US
dc.subjectGBPen_US
dc.title2-D LDPC Codes and Joint Detection and Decoding for Two-Dimensional Magnetic Recordingen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Elect & Comp Engnen_US
dc.identifier.journalIEEE TRANSACTIONS ON MAGNETICSen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal accepted manuscripten_US
dc.source.journaltitleIEEE Transactions on Magnetics
dc.source.volume54
dc.source.issue2
dc.source.beginpage1
dc.source.endpage11
refterms.dateFOA2018-07-17T16:47:39Z


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