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Paper Abstract and Keywords
Presentation 2022-03-02 09:50
Initial study of pseudo-phase noise-based symbol masked polarization-multiplexed M-QAM signal using a time-spreading encryption key
Keiji Shimada, Mizuki Inagaki, Takahiro Kodama (Kagawa Univ.) PN2021-70
Abstract (in Japanese) (See Japanese page) 
(in English) In recent years, a common key cryptosystem for the physical layer has been introduced in digital signals to keep the data handled by optical communication transceivers highly confidential. In this time, we propose a pseudo-phase noise symbol mask method in which the symbol distribution follows the Gaussian distribution in the phase direction using a time-spread encryption key for the symbol containing the data. To confirm the performance when applied to the dual polarized M-QAM signal of the pseudo-phase noise symbol masking method, we evaluated the bit error ratio (BER: Bit error ratio) by hard decision and the generalized mutual information (GMI: Generalized mutual information) amount eavesdropper attempts soft decision decoding using the likelihood.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical coherent communication / digital signal processing / quadrature amplitude modulation / common key cryptography / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 386, PN2021-70, pp. 92-97, March 2022.
Paper # PN2021-70 
Date of Issue 2022-02-22 (PN) 
ISSN Online edition: ISSN 2432-6380
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 PN  
Conference Date 2022-03-01 - 2022-03-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
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Topics (in English)  
Paper Information
Registration To PN 
Conference Code 2022-03-PN 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Initial study of pseudo-phase noise-based symbol masked polarization-multiplexed M-QAM signal using a time-spreading encryption key 
Sub Title (in English)  
Keyword(1) Optical coherent communication  
Keyword(2) digital signal processing  
Keyword(3) quadrature amplitude modulation  
Keyword(4) common key cryptography  
1st Author's Name Keiji Shimada  
1st Author's Affiliation Kagawa University (Kagawa Univ.)
2nd Author's Name Mizuki Inagaki  
2nd Author's Affiliation Kagawa University (Kagawa Univ.)
3rd Author's Name Takahiro Kodama  
3rd Author's Affiliation Kagawa University (Kagawa Univ.)
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Speaker Author-1 
Date Time 2022-03-02 09:50:00 
Presentation Time 20 minutes 
Registration for PN 
Paper # PN2021-70 
Volume (vol) vol.121 
Number (no) no.386 
Page pp.92-97 
Date of Issue 2022-02-22 (PN) 

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