| Presentation | 2024-01-11 Coverage expansion of 920MHz band multi-hop wireless communication underwater using optical wireless technologies Ryusei Oikawa, Nagataka Higaki, Naoto Yoshimoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently the need for real-time sensing of underwater environments is increasing. Multi-hop wireless communications using the license-free 920 MHz band as one of the LPWA (Low Power Wide Area) network technologies has been attracting attention in the IoT field as a technology that enables sensing in a wide area. In water, radio waves are greatly attenuated by the molecular structure of water. However Visible light has an optically transparent window underwater. Therefore, visible light is suitable for technologies that enable underwater transmission. The proposed Radio over Underwater Optical Wireless Communication (RoUOWC) system converts the carrier frequency from the 920 MHz band to visible light (450 nm to 520 nm), enabling seamless transmission of wireless signals from underwater to over by superimposing underwater sensing information on wireless signals and using a multi-hop function. We present experimental results on optical transmission/reception conditions and end-to-end wireless signal characteristics in an underwater environment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Underwater communication / Visible light communication / Free Space optical communication / Optical wireless communication (OWC) / Low Power Wide Area (LPWA) / Multi-hop communication / IEEE802.15.4 / Wi-SUN |
| Paper # | OCS2023-58 |
| Date of Issue | 2024-01-04 (OCS) |
| Conference Information | |
| Committee | OCS / CS |
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| Conference Date | 2024/1/11(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Takayuki Kobayashi(NTT) / Daisuke Umehara(Kyoto Inst. of Tech.) |
| Vice Chair | / Seiji Kozaki(Mitsubishi Electric) |
| Secretary | (NTT) / Seiji Kozaki(Sumitomo Electric Industries) |
| Assistant | / Hikaru Kawasaki(NICT) / Takeshi Suehiro(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Optical Communication Systems / Technical Committee on Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Coverage expansion of 920MHz band multi-hop wireless communication underwater using optical wireless technologies |
| Sub Title (in English) | |
| Keyword(1) | Underwater communication |
| Keyword(2) | Visible light communication |
| Keyword(3) | Free Space optical communication |
| Keyword(4) | Optical wireless communication (OWC) |
| Keyword(5) | Low Power Wide Area (LPWA) |
| Keyword(6) | Multi-hop communication |
| Keyword(7) | IEEE802.15.4 |
| Keyword(8) | Wi-SUN |
| 1st Author's Name | Ryusei Oikawa |
| 1st Author's Affiliation | Chitose Institute of Science and Technology(CIST) |
| 2nd Author's Name | Nagataka Higaki |
| 2nd Author's Affiliation | Chitose Institute of Science and Technology(CIST) |
| 3rd Author's Name | Naoto Yoshimoto |
| 3rd Author's Affiliation | Chitose Institute of Science and Technology(CIST) |
| Date | 2024-01-11 |
| Paper # | OCS2023-58 |
| Volume (vol) | vol.123 |
| Number (no) | OCS-330 |
| Page | pp.pp.7-12(OCS), |
| #Pages | 6 |
| Date of Issue | 2024-01-04 (OCS) |