Paper Abstract and Keywords |
Presentation |
2019-06-14 11:10
A study on neural network LLR modulation in TDMR Madoka Nishikawa, Yasuaki Nakamura (Ehime Univ.), Yasushi Kanai (NIT), Hisashi Osawa, Yoshihiro Okamoto (Ehime Univ.) MRIS2019-8 Link to ES Tech. Rep. Archives: MRIS2019-8 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In our previous research, we focused on a log-likelihood ratio (LLR) computed as the decoding reliability by a posteriori probability (APP) decoder on the low-density parity-check (LDPC) coding and iterative decoding system by a signal processing for the shingled magnetic recording (SMR) in two-dimensional magnetic recording (TDMR), and the proposed LLR modulator using neural network realizes effective iterative decoding in a read/write channel. In this report, we clarify that the performance improvement of iterative decoding can be obtained by considering LLRs of the adjacent track bits affecting to the decoding bit as the input of the neural network. Furthermore, we clarify that hybrid genetic algorithm (HGA) operations select LLRs by using the adjacent track LLRs affecting to the decoding bit and can update the connection weights of neural network for effective iterative decoding. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
SMR / TDMR / LDPC / LLR / Neural network / / / |
Reference Info. |
IEICE Tech. Rep., vol. 119, no. 79, MRIS2019-8, pp. 53-58, June 2019. |
Paper # |
MRIS2019-8 |
Date of Issue |
2019-06-06 (MRIS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
Download PDF |
MRIS2019-8 Link to ES Tech. Rep. Archives: MRIS2019-8 |
Conference Information |
Committee |
MRIS ITE-MMS |
Conference Date |
2019-06-13 - 2019-06-14 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tohoku Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Recording Systems, etc. |
Paper Information |
Registration To |
MRIS |
Conference Code |
2019-06-MRIS-MMS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A study on neural network LLR modulation in TDMR |
Sub Title (in English) |
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Keyword(1) |
SMR |
Keyword(2) |
TDMR |
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LDPC |
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LLR |
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Neural network |
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1st Author's Name |
Madoka Nishikawa |
1st Author's Affiliation |
Ehime University (Ehime Univ.) |
2nd Author's Name |
Yasuaki Nakamura |
2nd Author's Affiliation |
Ehime University (Ehime Univ.) |
3rd Author's Name |
Yasushi Kanai |
3rd Author's Affiliation |
Niigata Institute of Technology (NIT) |
4th Author's Name |
Hisashi Osawa |
4th Author's Affiliation |
Ehime University (Ehime Univ.) |
5th Author's Name |
Yoshihiro Okamoto |
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Ehime University (Ehime Univ.) |
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Speaker |
Author-1 |
Date Time |
2019-06-14 11:10:00 |
Presentation Time |
25 minutes |
Registration for |
MRIS |
Paper # |
MRIS2019-8 |
Volume (vol) |
vol.119 |
Number (no) |
no.79 |
Page |
pp.53-58 |
#Pages |
6 |
Date of Issue |
2019-06-06 (MRIS) |
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