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| Presentation | 2021-08-20 10:25 Low Complexity Channel Analysis using Discrete Fourier Basis for Wireless LAN Sensing Yuhei Nagao (Radrix), Kosuke Tsuji, Ryotaro Isshiki, Leonardo Lanante (Kyutech), Hiroshi Ochi (Radrix)  AP2021-49 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Channel State Information (CSI) sensing over wireless LAN is gathering attention, because it enables economically and easily to apply several applications in smart homes and healthcare, such as a human detection, motion detection and vital signs monitoring. In CSI sensing, principal component analysis (PCA) is used for feature extraction and dimensionality reduction as a step of machine learning. However, the computational complexity of PCA is high due to its singular value decomposition (SVD). In this paper, we propose a low complexity CSI analysis method which performs an imperfect diagonalization using discrete Fourier basis. This approach is based on the characteristics of OFDM transmission. The real experiments show that the proposed method has three effectiveness in following aspects, computational complexity, feature extraction, and dimensionality reduction. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wireless LAN / Sensing / Data Analysis / PCA / CSI / SVD / DFT / Diagonalization | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 141, AP2021-49, pp. 7-12, Aug. 2021. | |
| Paper # | AP2021-49 | |
| Date of Issue | 2021-08-13 (AP) | |
| 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 | AP2021-49 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2021-08-20 - 2021-08-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2021-08-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Low Complexity Channel Analysis using Discrete Fourier Basis for Wireless LAN Sensing |
| Sub Title (in English) | |
| Keyword(1) | Wireless LAN |
| Keyword(2) | Sensing |
| Keyword(3) | Data Analysis |
| Keyword(4) | PCA |
| Keyword(5) | CSI |
| Keyword(6) | SVD |
| Keyword(7) | DFT |
| Keyword(8) | Diagonalization |
| 1st Author's Name | Yuhei Nagao |
| 1st Author's Affiliation | Radrix co.,ltd. (Radrix) |
| 2nd Author's Name | Kosuke Tsuji |
| 2nd Author's Affiliation | Kyushu Institute of Technology (Kyutech) |
| 3rd Author's Name | Ryotaro Isshiki |
| 3rd Author's Affiliation | Kyushu Institute of Technology (Kyutech) |
| 4th Author's Name | Leonardo Lanante |
| 4th Author's Affiliation | Kyushu Institute of Technology (Kyutech) |
| 5th Author's Name | Hiroshi Ochi |
| 5th Author's Affiliation | Radrix co.,ltd. (Radrix) |
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| Speaker | Author-1 |
| Date Time | 2021-08-20 10:25:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2021-49 |
| Volume (vol) | vol.121 |
| Number (no) | no.141 |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2021-08-13 (AP) |
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