| Presentation | 2021-11-26 [Poster Presentation] Frame-Capture-Based CSI Recomposition Pertaining to Firmware-Agnostic WiFi Sensing Ryosuke Hanahara, Sohei Itahara, Kota Yamashita, Yusuke Koda, Akihito Taya, Takayuki Nishio, Koji Yamamoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents an estimation method of channel state information (CSI) matrices using corresponding beamforming feedback matrices (BFMs) contained in WLAN frames. The BFM is a right singular matrix computed by singular value decomposition of the CSI matrix. The CSI matrix is processed and discarded at the physical layer, while the BFM is exchanged between the access point and stationand can be obtained by frame capturing. On the other hand, more sensing tasks are based on CSI matrices rather than BFM. To fill this gap, this method uses machine learning to reconstruct the CSI matrices from the BFMs. The simulation results show that the estimated CSI amplitude approximates the ground-truth, and leveraging BFMs on multiple subcarriers enhances prediction accuracy. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | channel state information / beamforming feedback / singular value decomposition / wireless sensing |
| Paper # | SRW2021-48,SeMI2021-47,CNR2021-22 |
| Date of Issue | 2021-11-18 (SRW, SeMI, CNR) |
| Conference Information | |
| Committee | SRW / SeMI / CNR |
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| Conference Date | 2021/11/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | IoT Workshop |
| Chair | Hanako Noda(Anritsu) / Koji Yamamoto(Kyoto Univ.) / Masayuki Kanbara(NAIST) |
| Vice Chair | Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Denki Univ.) / Hirokazu Sawada(NICT) / Kazuya Monden(Hitachi) / Yasunori Owada(NICT) / Yoshihiko Murakawa(Kyoto Inst. of Tech.) |
| Secretary | Keiichi Mizutani(NTT) / Kentaro Saito(NIigata Univ.) / Hirokazu Sawada(Cyber Univ.) / Kazuya Monden(Waseda Univ.) / Yasunori Owada(Osaka Univ.) / Yoshihiko Murakawa(Toshiba) |
| Assistant | Akihito Noda(Nanzan Univ.) / Yuki Katsumata(NTT DOCOMO) / Akihito Taya(Aoyama Gakuin Univ.) / Yu Nakayama(Tokyo Univ. of Agri. and Tech.) / Yuta Hoshi(NHK) / Junji Yamato(Kogakuin Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Short Range Wireless Communications / Technical Committee on Sensor Network and Mobile Intelligence / Technical Committee on Cloud Network Robotics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Frame-Capture-Based CSI Recomposition Pertaining to Firmware-Agnostic WiFi Sensing |
| Sub Title (in English) | |
| Keyword(1) | channel state information |
| Keyword(2) | beamforming feedback |
| Keyword(3) | singular value decomposition |
| Keyword(4) | wireless sensing |
| 1st Author's Name | Ryosuke Hanahara |
| 1st Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 2nd Author's Name | Sohei Itahara |
| 2nd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 3rd Author's Name | Kota Yamashita |
| 3rd Author's Affiliation | Kyoto University(Kyoto Univ.) |
| 4th Author's Name | Yusuke Koda |
| 4th Author's Affiliation | University of Oulu(Univ. Oulu) |
| 5th Author's Name | Akihito Taya |
| 5th Author's Affiliation | Kyoto University/Aoyama Gakuin University(Kyoto Univ./Aoyama Gakuin Univ.) |
| 6th Author's Name | Takayuki Nishio |
| 6th Author's Affiliation | Kyoto University/Tokyo Institute of Technology(Kyoto Univ./Tokyo Tech.) |
| 7th Author's Name | Koji Yamamoto |
| 7th Author's Affiliation | Kyoto University(Kyoto Univ.) |
| Date | 2021-11-26 |
| Paper # | SRW2021-48,SeMI2021-47,CNR2021-22 |
| Volume (vol) | vol.121 |
| Number (no) | SRW-265,SeMI-266,CNR-267 |
| Page | pp.pp.71-73(SRW), pp.58-60(SeMI), pp.48-50(CNR), |
| #Pages | 3 |
| Date of Issue | 2021-11-18 (SRW, SeMI, CNR) |