Performance evaluation of LDPC coding and iterative decoding system in BPM R/W channel affected by head field gradient, media SFD and demagnetization field

Yasuaki Nakamura; Yoshihiro Okamoto; Hisashi Osawa; Hajime Aoi; Hiroaki Muraoka

doi:10.1016/j.phpro.2011.06.113

Performance evaluation of LDPC coding and iterative decoding system in BPM R/W channel affected by head field gradient, media SFD and demagnetization field

Yasuaki Nakamura, Yoshihiro Okamoto, Hisashi Osawa, Hajime Aoi, Hiroaki Muraoka

電気通信研究所・ブロードバンド工学研究部門

研究成果: Conference article › 査読

2 被引用数 (Scopus)

抄録

We evaluate the performance of the write-margin for the low-density parity-check (LDPC) coding and iterative decoding system in the bit-patterned media (BPM) R/W channel affected by the write-head field gradient, the media switching field distribution (SFD), the demagnetization field from adjacent islands and the island position deviation. It is clarified that the LDPC coding and iterative decoding system in R/W channel using BPM at 3 Tbit/inch ² has a write-margin of about 20%.

本文言語	English
ページ（範囲）	88-93
ページ数	6
ジャーナル	Physics Procedia
巻	16
DOI	https://doi.org/10.1016/j.phpro.2011.06.113
出版ステータス	Published - 2011
イベント	9th Perpendicular Magnetic Recording Conference, PMRC 2010 - Sendai, Japan 継続期間: 2011 5 17 → 2011 5 19

ASJC Scopus subject areas

物理学および天文学（全般）

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10.1016/j.phpro.2011.06.113

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引用スタイル

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title = "Performance evaluation of LDPC coding and iterative decoding system in BPM R/W channel affected by head field gradient, media SFD and demagnetization field",

abstract = "We evaluate the performance of the write-margin for the low-density parity-check (LDPC) coding and iterative decoding system in the bit-patterned media (BPM) R/W channel affected by the write-head field gradient, the media switching field distribution (SFD), the demagnetization field from adjacent islands and the island position deviation. It is clarified that the LDPC coding and iterative decoding system in R/W channel using BPM at 3 Tbit/inch 2 has a write-margin of about 20%.",

keywords = "Bit-patterned media, Iterative decoding, LDPC code, Write-error, Write-margin",

author = "Yasuaki Nakamura and Yoshihiro Okamoto and Hisashi Osawa and Hajime Aoi and Hiroaki Muraoka",

note = "Funding Information: This work was supported by Gant-in-Aid of the Storage Research Consortium (SRC), Japan, and Gant-in-Aid for Scientific Research (B) of Japan Society for the Promotion of Science (JSPS), 21360188.; 9th Perpendicular Magnetic Recording Conference, PMRC 2010 ; Conference date: 17-05-2011 Through 19-05-2011",

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language = "English",

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TY - JOUR

T1 - Performance evaluation of LDPC coding and iterative decoding system in BPM R/W channel affected by head field gradient, media SFD and demagnetization field

AU - Nakamura, Yasuaki

AU - Okamoto, Yoshihiro

AU - Osawa, Hisashi

AU - Aoi, Hajime

AU - Muraoka, Hiroaki

N1 - Funding Information: This work was supported by Gant-in-Aid of the Storage Research Consortium (SRC), Japan, and Gant-in-Aid for Scientific Research (B) of Japan Society for the Promotion of Science (JSPS), 21360188.

PY - 2011

Y1 - 2011

N2 - We evaluate the performance of the write-margin for the low-density parity-check (LDPC) coding and iterative decoding system in the bit-patterned media (BPM) R/W channel affected by the write-head field gradient, the media switching field distribution (SFD), the demagnetization field from adjacent islands and the island position deviation. It is clarified that the LDPC coding and iterative decoding system in R/W channel using BPM at 3 Tbit/inch 2 has a write-margin of about 20%.

AB - We evaluate the performance of the write-margin for the low-density parity-check (LDPC) coding and iterative decoding system in the bit-patterned media (BPM) R/W channel affected by the write-head field gradient, the media switching field distribution (SFD), the demagnetization field from adjacent islands and the island position deviation. It is clarified that the LDPC coding and iterative decoding system in R/W channel using BPM at 3 Tbit/inch 2 has a write-margin of about 20%.

KW - Bit-patterned media

KW - Iterative decoding

KW - LDPC code

KW - Write-error

KW - Write-margin

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EP - 93

JO - Physics Procedia

JF - Physics Procedia

SN - 1875-3892

T2 - 9th Perpendicular Magnetic Recording Conference, PMRC 2010

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