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Paper Abstract and Keywords
Presentation 2015-07-09 10:05
A Study of Evaluation Method for Electromagnetic Interference Affecting Digital Communication Systems
Kotaro Ono, Ken Okamoto, Hidetoshi Tatemichi, Kazuhiro Takaya (NTT) EMCJ2015-31
Abstract (in Japanese) (See Japanese page) 
(in English) CISPR has prepared regulations suppressing Electromagnetic interference (EMI) from electric and electronic devices in order to prevent EMI in wireless communication systems. As evaluation index for EMI, peak (PK), quasi-peak (QP) and average (AV) detections have been used. Particularly, the time constants used in QP detection were regulated on the basis of responses of analog circuits and human audition. Therefore, it is known that evaluations of EMI by PK/QP/AV detections don’t correlate with EMI affecting digital communication systems. However, the condition where PK/QP/AV can be applied has not been clarified, and the condition where PK/QP/AV cannot be applied has not been clarified too. Thus, in this report, as a study of evaluation method for EMI affecting digital communication systems, PK/QP/AV detections’ coverages were investigated experimentally, using asymmetric digital subscriber line (ADSL), which attempts to reconnect autonomously when communication conditions deteriorate. As a result, it has been clarified that evaluations for EMI by PK/QP/AV detections can be applied to influence to digital communication systems due to difference of frequency bandwidth of continuous wave. In contrast, it has been confirmed that evaluations for EMI by PK/QP/AV don’t correlate with digital communication systems when focusing on burst EMI. From this investigation, it has been clarified that influence to digital communication systems due to difference of frequency bandwidth of continuous wave can be evaluated appropriately by establishing tolerance of PK/QP/AV and there are cases where evaluations for EMI by PK/QP/AV detections don’t work properly when evaluating burst EMI.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital communication / ADSL / Electromagnetic interference / Peak / Quasi-peak / Average / Duration /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 131, EMCJ2015-31, pp. 1-5, July 2015.
Paper # EMCJ2015-31 
Date of Issue 2015-07-02 (EMCJ) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee EMCJ  
Conference Date 2015-07-09 - 2015-07-09 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Young Scientist Meeting 
Paper Information
Registration To EMCJ 
Conference Code 2015-07-EMCJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study of Evaluation Method for Electromagnetic Interference Affecting Digital Communication Systems 
Sub Title (in English)  
Keyword(1) Digital communication  
Keyword(2) ADSL  
Keyword(3) Electromagnetic interference  
Keyword(4) Peak  
Keyword(5) Quasi-peak  
Keyword(6) Average  
Keyword(7) Duration  
Keyword(8)  
1st Author's Name Kotaro Ono  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Ken Okamoto  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Hidetoshi Tatemichi  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Kazuhiro Takaya  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker
Date Time 2015-07-09 10:05:00 
Presentation Time 25 
Registration for EMCJ 
Paper # IEICE-EMCJ2015-31 
Volume (vol) IEICE-115 
Number (no) no.131 
Page pp.1-5 
#Pages IEICE-5 
Date of Issue IEICE-EMCJ-2015-07-02 


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