Paper Abstract and Keywords |
Presentation |
2021-03-02 14:30
[Poster Presentation]
A Preliminary Study on Wi-Fi CSI Imaging Kazuki Okawara (Osaka Univ.), Akira Uchiyama (Osaka Univ./JST PRESTO), Viktor Erdelyi (Osaka Univ.), Tomoki Murakami, Hirantha Abeysekera (NTT), Teruo Higashino (Osaka Univ.) SeMI2020-68 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Human activity recognition using Wi-Fi CSI (Channel State Information) has been widely studied recently. CSI has advantages of low deployment cost and less privacy concern. On the other hand, CSI-based human activity recognition requires a heavy human effort for training data collection for each environment. One of solutions is Wi-Fi imaging which maps signal strength for each direction based on phase difference between antennas of an array. Because the phase difference is calculated based on the inter-antenna distance, Wi-Fi imaging is performed independently of environment. If Wi-Fi imaging is capable of capturing locations and/or poses of humans, it may be applicable to human localization and/or activity recognition. In this paper, we implemented Wi-Fi CSI imaging by an array of four antennas and conducted preliminary experiment by using a copper plate. From the results, we confirmed that imaging of the copper plate is possible for the angles between 60 and 120 degrees to the surface of the antenna array in the environment without reflection from surroundings. |
Keyword |
(in Japanese) |
(See Japanese page) |
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Reference Info. |
IEICE Tech. Rep., vol. 120, no. 382, SeMI2020-68, pp. 63-66, March 2021. |
Paper # |
SeMI2020-68 |
Date of Issue |
2021-02-22 (SeMI) |
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) |
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SeMI2020-68 |
Conference Information |
Committee |
SeMI IPSJ-MBL IPSJ-UBI |
Conference Date |
2021-03-01 - 2021-03-02 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Mobile Computing, Ubiquitous Computing, etc. |
Paper Information |
Registration To |
SeMI |
Conference Code |
2021-03-SeMI-MBL-UBI |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
A Preliminary Study on Wi-Fi CSI Imaging |
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1st Author's Name |
Kazuki Okawara |
1st Author's Affiliation |
Osaka University (Osaka Univ.) |
2nd Author's Name |
Akira Uchiyama |
2nd Author's Affiliation |
Osaka University/Japan Science and Technology Agency, PRESTO (Osaka Univ./JST PRESTO) |
3rd Author's Name |
Viktor Erdelyi |
3rd Author's Affiliation |
Osaka University (Osaka Univ.) |
4th Author's Name |
Tomoki Murakami |
4th Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
5th Author's Name |
Hirantha Abeysekera |
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Nippon Telegraph and Telephone Corporation (NTT) |
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Teruo Higashino |
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Osaka University (Osaka Univ.) |
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Speaker |
Author-1 |
Date Time |
2021-03-02 14:30:00 |
Presentation Time |
60 minutes |
Registration for |
SeMI |
Paper # |
SeMI2020-68 |
Volume (vol) |
vol.120 |
Number (no) |
no.382 |
Page |
pp.63-66 |
#Pages |
4 |
Date of Issue |
2021-02-22 (SeMI) |