An ITI-Mitigating 5/6 Modulation Code for Bit-Patterned Media Recording

Chanon WARISARN; Autthasith ARRAYANGKOOL; Piya KOVINTAVEWAT

doi:10.1587/transele.E98.C.528

An ITI-Mitigating 5/6 Modulation Code for Bit-Patterned Media Recording

Chanon WARISARN, Autthasith ARRAYANGKOOL, Piya KOVINTAVEWAT

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Summary :

In bit-patterned media recording (BPMR), the readback signal is severely corrupted by the inter-symbol interference (ISI) and inter-track interference (ITI), especially at high recording densities, due to small bit and track pitches. One way to alleviate the ITI effect is to encode an input data sequence before recording, so as to avoid some data patterns that easily cause an error at the data detection process. This paper proposes an ITI-mitigating 5/6 modulation code for a multi-track multi-head BPMR system to eliminate the data patterns that lead to severe ITI. Specifically, each of the 5 user bits is converted into a 6-bit codeword in the form of a 3-by-2 data array, based on a look-up table. Experimental results indicate that the system with the proposed coding scheme outperforms that without coding, especially when an areal density is high and/or the position jitter is large.

Publication: IEICE TRANSACTIONS on Electronics Vol.E98-C No.6 pp.528-533

Publication Date: 2015/06/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E98.C.528

Type of Manuscript: PAPER

Category: Storage Technology

Authors

Chanon WARISARN
  King Mongkut's Institute of Technology Ladkrabang (KMITL)
Autthasith ARRAYANGKOOL
  King Mongkut's Institute of Technology Ladkrabang (KMITL)
Piya KOVINTAVEWAT
  Nakhon Pathom Rajabhat University

Keyword

Bit-patterned media recording (BPMR), Euclidean distance, Inter-track interference (ITI), Modulation code

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Chanon WARISARN, Autthasith ARRAYANGKOOL, Piya KOVINTAVEWAT, "An ITI-Mitigating 5/6 Modulation Code for Bit-Patterned Media Recording" in IEICE TRANSACTIONS on Electronics, vol. E98-C, no. 6, pp. 528-533, June 2015, doi: 10.1587/transele.E98.C.528.
Abstract: In bit-patterned media recording (BPMR), the readback signal is severely corrupted by the inter-symbol interference (ISI) and inter-track interference (ITI), especially at high recording densities, due to small bit and track pitches. One way to alleviate the ITI effect is to encode an input data sequence before recording, so as to avoid some data patterns that easily cause an error at the data detection process. This paper proposes an ITI-mitigating 5/6 modulation code for a multi-track multi-head BPMR system to eliminate the data patterns that lead to severe ITI. Specifically, each of the 5 user bits is converted into a 6-bit codeword in the form of a 3-by-2 data array, based on a look-up table. Experimental results indicate that the system with the proposed coding scheme outperforms that without coding, especially when an areal density is high and/or the position jitter is large.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E98.C.528/_p

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@ARTICLE{e98-c_6_528,
author={Chanon WARISARN, Autthasith ARRAYANGKOOL, Piya KOVINTAVEWAT, },
journal={IEICE TRANSACTIONS on Electronics},
title={An ITI-Mitigating 5/6 Modulation Code for Bit-Patterned Media Recording},
year={2015},
volume={E98-C},
number={6},
pages={528-533},
abstract={In bit-patterned media recording (BPMR), the readback signal is severely corrupted by the inter-symbol interference (ISI) and inter-track interference (ITI), especially at high recording densities, due to small bit and track pitches. One way to alleviate the ITI effect is to encode an input data sequence before recording, so as to avoid some data patterns that easily cause an error at the data detection process. This paper proposes an ITI-mitigating 5/6 modulation code for a multi-track multi-head BPMR system to eliminate the data patterns that lead to severe ITI. Specifically, each of the 5 user bits is converted into a 6-bit codeword in the form of a 3-by-2 data array, based on a look-up table. Experimental results indicate that the system with the proposed coding scheme outperforms that without coding, especially when an areal density is high and/or the position jitter is large.},
keywords={},
doi={10.1587/transele.E98.C.528},
ISSN={1745-1353},
month={June},}

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TY - JOUR
TI - An ITI-Mitigating 5/6 Modulation Code for Bit-Patterned Media Recording
T2 - IEICE TRANSACTIONS on Electronics
SP - 528
EP - 533
AU - Chanon WARISARN
AU - Autthasith ARRAYANGKOOL
AU - Piya KOVINTAVEWAT
PY - 2015
DO - 10.1587/transele.E98.C.528
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E98-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2015
AB - In bit-patterned media recording (BPMR), the readback signal is severely corrupted by the inter-symbol interference (ISI) and inter-track interference (ITI), especially at high recording densities, due to small bit and track pitches. One way to alleviate the ITI effect is to encode an input data sequence before recording, so as to avoid some data patterns that easily cause an error at the data detection process. This paper proposes an ITI-mitigating 5/6 modulation code for a multi-track multi-head BPMR system to eliminate the data patterns that lead to severe ITI. Specifically, each of the 5 user bits is converted into a 6-bit codeword in the form of a 3-by-2 data array, based on a look-up table. Experimental results indicate that the system with the proposed coding scheme outperforms that without coding, especially when an areal density is high and/or the position jitter is large.
ER -