Iterative decoding algorithm using attenuated information in PMR with bit-patterned medium

In this paper, a low-density parity check (LDPC) coding and iterative decoding system is studied in perpendicular magnetic recording (PMR) with a bit-patterned medium. We propose the efficient iterative decoding algorithm attenuating reliability information, and evaluate the sector error rate (SER)...

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Published in:Journal of magnetism and magnetic materials Vol. 320; no. 22; pp. 3132 - 3135
Main Authors: Nakamura, Y., Nishimura, M., Okamoto, Y., Osawa, H., Aoi, H., Muraoka, H.
Format: Journal Article Conference Proceeding
Language:English
Published: Amsterdam Elsevier B.V 01.11.2008
Elsevier
Subjects:
Applied sciences
Bit-patterned medium
Electronics
Error floor
Exact sciences and technology
Iterative decoding
LDPC code
Recording and replay of audio and video signals
Storage and reproduction of information
85.70.Li
Error floor
89.70.Kn
Bit-patterned medium
LDPC code
Iterative decoding
Performance evaluation
Computer simulation
Perpendicular magnetic recording
Error rate
Iterative method
Algorithm
Algorithm performance
Coding
SERS
Parity check
ISSN:0304-8853
Online Access:Get full text
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Abstract In this paper, a low-density parity check (LDPC) coding and iterative decoding system is studied in perpendicular magnetic recording (PMR) with a bit-patterned medium. We propose the efficient iterative decoding algorithm attenuating reliability information, and evaluate the sector error rate (SER) performance of the LDPC coding and iterative decoding system by R/W computer simulations. It is clarified that the proposed systems provide better SER performances than that of the conventional system at an areal density of 1 Tbit/in 2 and can also prevent the error floor which appears in the performance of conventional system.
AbstractList In this paper, a low-density parity check (LDPC) coding and iterative decoding system is studied in perpendicular magnetic recording (PMR) with a bit-patterned medium. We propose the efficient iterative decoding algorithm attenuating reliability information, and evaluate the sector error rate (SER) performance of the LDPC coding and iterative decoding system by R/W computer simulations. It is clarified that the proposed systems provide better SER performances than that of the conventional system at an areal density of 1 Tbit/in2 and can also prevent the error floor which appears in the performance of conventional system.
In this paper, a low-density parity check (LDPC) coding and iterative decoding system is studied in perpendicular magnetic recording (PMR) with a bit-patterned medium. We propose the efficient iterative decoding algorithm attenuating reliability information, and evaluate the sector error rate (SER) performance of the LDPC coding and iterative decoding system by R/W computer simulations. It is clarified that the proposed systems provide better SER performances than that of the conventional system at an areal density of 1 Tbit/in 2 and can also prevent the error floor which appears in the performance of conventional system.
Author Okamoto, Y.
Muraoka, H.
Nakamura, Y.
Nishimura, M.
Osawa, H.
Aoi, H.
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Cites_doi 10.1109/TIT.1962.1057683
10.1063/1.1853695
10.1109/TMAG.2007.893421
10.1109/18.910572
10.1016/S0304-8853(01)00356-0
10.1049/el:19961141
10.1109/TCOM.1966.1089288
10.1109/TMAG.2004.835697
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Issue 22
Keywords 85.70.Li
Error floor
89.70.Kn
Bit-patterned medium
LDPC code
Iterative decoding
Performance evaluation
Computer simulation
Perpendicular magnetic recording
Error rate
Iterative method
Algorithm
Algorithm performance
Coding
SERS
Parity check
Language English
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MacKay (bib3) 1996; 32
Nakamura (bib4) 2007; 43
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MacKay (10.1016/j.jmmm.2008.08.024_bib3) 1996; 32
Nakamura (10.1016/j.jmmm.2008.08.024_bib4) 2007; 43
Gallager (10.1016/j.jmmm.2008.08.024_bib2) 1962; IT-8
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Snippet In this paper, a low-density parity check (LDPC) coding and iterative decoding system is studied in perpendicular magnetic recording (PMR) with a bit-patterned...
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SubjectTerms Applied sciences
Bit-patterned medium
Electronics
Error floor
Exact sciences and technology
Iterative decoding
LDPC code
Recording and replay of audio and video signals
Storage and reproduction of information
Title Iterative decoding algorithm using attenuated information in PMR with bit-patterned medium
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