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Paper Abstract and Keywords
Presentation 2022-11-08 14:00
[Technology Exhibit] Measurement Evaluation of Time-Synchronization Offset of Wireless Two-Way Interferometry (Wi-Wi)
Serena Akasaka, Suguru Kamda (Hiroshima Univ.), Satoshi Yasuda, Nobuyasu Shiga (NICT) SR2022-64
Abstract (in Japanese) (See Japanese page) 
(in English) Synchronized spread spectrum code division multiple access (SS-CDMA) is very effective for increasing the capacity and reducing the interference with a rapid spread of Internet of things (IoT) devices. Since the synchronized SS-CDMA requires to receive timing synchronization, it is essential to realize space-time synchronization. The wireless two-way interferometry (Wi-Wi) is used for precise time synchronization between nodes. In this paper, we evaluate error of initial timing synchronization (offset) of the Wi-Wi module in several conditions. Since the standard deviation of offset was less than 30 ns in all of the measured conditions, it was shown that Wi-Wi is capable of high-precision initial timing synchronization.
Keyword (in Japanese) (See Japanese page) 
(in English) synchronized SS-CDMA / transmission timing control / time synchronization / offset / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 243, SR2022-64, pp. 101-104, Nov. 2022.
Paper # SR2022-64 
Date of Issue 2022-10-31 (SR) 
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 SR  
Conference Date 2022-11-07 - 2022-11-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Software Defined Radio, Cognitive Radio, Spectrum Sharing, etc. 
Paper Information
Registration To SR 
Conference Code 2022-11-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement Evaluation of Time-Synchronization Offset of Wireless Two-Way Interferometry (Wi-Wi) 
Sub Title (in English)  
Keyword(1) synchronized SS-CDMA  
Keyword(2) transmission timing control  
Keyword(3) time synchronization  
Keyword(4) offset  
1st Author's Name Serena Akasaka  
1st Author's Affiliation Hiroshima University (Hiroshima Univ.)
2nd Author's Name Suguru Kamda  
2nd Author's Affiliation Hiroshima University (Hiroshima Univ.)
3rd Author's Name Satoshi Yasuda  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Nobuyasu Shiga  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2022-11-08 14:00:00 
Presentation Time 60 minutes 
Registration for SR 
Paper # SR2022-64 
Volume (vol) vol.122 
Number (no) no.243 
Page pp.101-104 
Date of Issue 2022-10-31 (SR) 

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