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Paper Abstract and Keywords
Presentation 2011-10-14 09:30
Adaptive and Iterative ITI Canceller for Inter-Track Asynchronous Shingled Write Magnetic Recording
Masaaki Fujii (Samsung Yokohama) MR2011-16
Abstract (in Japanese) (See Japanese page) 
(in English) An adaptive and iterative intertrack-interference (ITI) cancelling scheme is described for multi-track signal detection in inter-track asynchronous shingled write magnetic recording. There is write-clock frequency drift in asynchronous recording systems. Read-back signals obtained with a wide read head scanning narrow tracks thus suffer from not only intersymbol interference (ISI) but also time-variant ITI. To efficiently cope with static ISI and time-variant ITI, multi-track soft interference cancellers and two-dimensional partial-response filters are incorporated based on per-survivor processing into each trellis state defined in a one-dimensional/two-dimensional trellis-switching max-log-MAP detector. In addition, the computational complexity can be reduced based on channel interpolation and intermittent TDPR-filter control by allowing small degradation in signal detection. Computer simulation results in media-noise-dominant environments demonstrate that the proposed adaptive and iterative ITI canceller achieves bit error rates close to those obtained in a non-ITI case when the read-head off-track ratio is up to 50% in write-clock frequency difference of 0.02%.
Keyword (in Japanese) (See Japanese page) 
(in English) Adaptive and iterative signal processing / inter-track interference / shingled write magnetic recording / per-survivor processing / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, Oct. 2011.
Paper #  
Date of Issue 2011-10-06 (MR) 
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)
Notes on Review This article is a technical report without peer review, and its polished version will be published elsewhere.
Download PDF MR2011-16

Conference Information
Committee MRIS ITE-MMS  
Conference Date 2011-10-13 - 2011-10-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Kashiwazaki energy hall, Niigata 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Recording Head, Spintronics, etc. 
Paper Information
Registration To MRIS 
Conference Code 2011-10-MR-MMS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Adaptive and Iterative ITI Canceller for Inter-Track Asynchronous Shingled Write Magnetic Recording 
Sub Title (in English)  
Keyword(1) Adaptive and iterative signal processing  
Keyword(2) inter-track interference  
Keyword(3) shingled write magnetic recording  
Keyword(4) per-survivor processing  
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1st Author's Name Masaaki Fujii  
1st Author's Affiliation Samsung Yokohama Research Institute Co., Ltd. (Samsung Yokohama)
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Speaker Author-1 
Date Time 2011-10-14 09:30:00 
Presentation Time 30 minutes 
Registration for MRIS 
Paper # MR2011-16 
Volume (vol) vol.111 
Number (no) no.233 
Page pp.43-50 
#Pages 8 
Date of Issue 2011-10-06 (MR) 

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