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Paper Abstract and Keywords
Presentation 2021-01-26 14:20
[Invited Talk] Frequency Spectrum and Node Sensing Techniques for Wireless IoT
Takashi Shiba, Tomoyuki Furuichi, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu (Tohoku Univ.) SR2020-59
Abstract (in Japanese) (See Japanese page) 
(in English) It becomes a problem of low communication speed at narrow space with several wireless communication for example of wireless IoT in smart factory in order to conflict of these signals. This problem of sommunication speed causes low productivity. A real-time broadband spectrum sensor is neccesarry for this problem to observe broad band (920MHz/2.4GHz/5GHz wireless IoT bands). We develop a new simple real-time and broadband spectrum sensor for this problem. A several sampling frequency undersampling method, implementation of transient time of sampling frequency changing for real-time characteristics, implementation of sampling freiquency and number of sampling for broadband spurious-free characteristics. We succeed to develop a new simple real-time and broadband spectrum sensor and spectrum sensing for wireless IoT bands is able to be obtained consequently. We also proceed a node-position sensing method using this spectrum sensor equipment.
Keyword (in Japanese) (See Japanese page) 
(in English) Direct RF undersampling / Spectrum sensing / Node-sensing / Wireless IoT / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 341, SR2020-59, pp. 73-80, Jan. 2021.
Paper # SR2020-59 
Date of Issue 2021-01-18 (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 2021-01-25 - 2021-01-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Cognitive Radio, Spectrum Management, Heterogeneous Network, SDN, Machine Learning Application, etc. 
Paper Information
Registration To SR 
Conference Code 2021-01-SR 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Frequency Spectrum and Node Sensing Techniques for Wireless IoT 
Sub Title (in English)  
Keyword(1) Direct RF undersampling  
Keyword(2) Spectrum sensing  
Keyword(3) Node-sensing  
Keyword(4) Wireless IoT  
1st Author's Name Takashi Shiba  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Tomoyuki Furuichi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Mizuki Motoyoshi  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Suguru Kameda  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
5th Author's Name Noriharu Suematsu  
5th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2021-01-26 14:20:00 
Presentation Time 50 minutes 
Registration for SR 
Paper # SR2020-59 
Volume (vol) vol.120 
Number (no) no.341 
Page pp.73-80 
Date of Issue 2021-01-18 (SR) 

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