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Paper Abstract and Keywords
Presentation 2026-05-15 15:10
Comparative Evaluation of CSI-Based Object Localization in WLAN under Small- and Large-Scale Indoor Environments
Noritaka Tamaki, Fuma Kunihiro, Osamu Muta (Kyushu Univ.), Tomoki Murakami, Shinya Otsuki, Kazuya Ohara (NTT) RCS2026-23
Abstract (in Japanese) (See Japanese page) 
(in English) Device-free object detection techniques using radio signals have attracted increasing attention, where channel state information (CSI) obtained in wireless local area networks (WLANs) is utilized as effective feature data to estimate the location and behavior of target objects.
However, the performance of CSI-based detection methods is strongly affected by feature design and surrounding environments.
In this paper, we experimentally evaluate the detection performance of multiple objects using CSI in WLAN systems under various indoor environments.
In particular, we investigate how the placement of access points (APs) and stations (STAs) affects object detection performance.
Keyword (in Japanese) (See Japanese page) 
(in English) Device-free localization / channel state information / wireless local area networks / / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 23, RCS2026-23, pp. 52-57, May 2026.
Paper # RCS2026-23 
Date of Issue 2026-05-07 (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 RCS2026-23

Conference Information
Committee IN RCS NV  
Conference Date 2026-05-14 - 2026-05-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Hiroshima City University Satellite Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Ad-Hoc/Sensor Networks/MANET, Mobile Networks, M2M/IoT Communications, Wi-Fi, IEEE802.15(ZigBee) and others 
Paper Information
Registration To RCS 
Conference Code 2026-05-IN-RCS-NV 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparative Evaluation of CSI-Based Object Localization in WLAN under Small- and Large-Scale Indoor Environments 
Sub Title (in English)  
Keyword(1) Device-free localization  
Keyword(2) channel state information  
Keyword(3) wireless local area networks  
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1st Author's Name Noritaka Tamaki  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Fuma Kunihiro  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Osamu Muta  
3rd Author's Affiliation Kyushu University (Kyushu Univ.)
4th Author's Name Tomoki Murakami  
4th Author's Affiliation NTT, Inc. (NTT)
5th Author's Name Shinya Otsuki  
5th Author's Affiliation NTT, Inc. (NTT)
6th Author's Name Kazuya Ohara  
6th Author's Affiliation NTT, Inc. (NTT)
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Speaker Author-1 
Date Time 2026-05-15 15:10:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2026-23 
Volume (vol) vol.126 
Number (no) no.23 
Page pp.52-57 
#Pages 6 
Date of Issue 2026-05-07 (RCS) 

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