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Paper Abstract and Keywords
Presentation 2024-08-30 13:50
Impact of Fresnel Zone Boundary, Subcarrier Selection, and Antenna Pair Selection on WLAN-based Respiration Rate Estimation
Naohide Wakuda (Kyoto Univ.), Koji Yamamoto (KIT), Takayuki Nishio (TIT), Akihito Taya (Univ. Tokyo) RCS2024-132
Abstract (in Japanese) (See Japanese page) 
(in English) In respiration rate estimation using wireless LAN channel state information (CSI), a detection principle explained by the Fresnel zone boundary has been proposed.
This principle explains that when a single object reflecting radio waves crosses the Fresnel zone boundaries between transmitter and receiver perpendicularly, the received signal strength exhibits sinusoidal-like fluctuations with peaks and troughs at the boundaries.
The magnitude of these fluctuations causes variations in sensing accuracy.
This report confirms the validity of this principle through CSI measurements and demonstrates the importance of antenna pair selection as well as subcarrier selection as has been conducted in previous studies.
Additionally, we proposed metrics to evaluate the effectiveness of antenna pair and subcarrier selection.
Keyword (in Japanese) (See Japanese page) 
(in English) Wireless LAN / Sensing / respiration rate estimation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 166, RCS2024-132, pp. 90-95, Aug. 2024.
Paper # RCS2024-132 
Date of Issue 2024-08-22 (RCS) 
ISSN 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)
Download PDF RCS2024-132

Conference Information
Committee SAT RCS  
Conference Date 2024-08-29 - 2024-08-30 
Place (in Japanese) (See Japanese page) 
Place (in English) CUL-PORT(Kochi City) (Temporary) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Satellite Communications, Broadcasting, Forward Error Correction, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2024-08-SAT-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Impact of Fresnel Zone Boundary, Subcarrier Selection, and Antenna Pair Selection on WLAN-based Respiration Rate Estimation 
Sub Title (in English)  
Keyword(1) Wireless LAN  
Keyword(2) Sensing  
Keyword(3) respiration rate estimation  
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1st Author's Name Naohide Wakuda  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Koji Yamamoto  
2nd Author's Affiliation Kyoto Institute of Technology (KIT)
3rd Author's Name Takayuki Nishio  
3rd Author's Affiliation Tokyo Institute of Technology (TIT)
4th Author's Name Akihito Taya  
4th Author's Affiliation The University of Tokyo (Univ. Tokyo)
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Speaker Author-2 
Date Time 2024-08-30 13:50:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2024-132 
Volume (vol) vol.124 
Number (no) no.166 
Page pp.90-95 
#Pages 6 
Date of Issue 2024-08-22 (RCS) 

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