| Presentation | 2018-06-22 Evaluation of OAM Based Mode Division Multiplexing Transmission in Different Propagation Environments Ayano Yamamoto, Toshihiko Nishimura, Takeo Ohgane, Tomoya Tandai, Daisuke Uchida, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Orbital angular momentum (OAM) is a physical quantity of an electromagnetic wave that is independent of polarization, and the electromagnetic wave having OAM becomes a helical wave. Modes can be defined according to the number of turns of helix, and the different modes are mutually orthogonal. In recent years, with growth of the millimeter wave technology and demands for further high-speed large capacity transmission, a new spatial multiplexing transmission scheme using the orthogonality of OAM has attracted attention. However, there are still problems to be solved for a practical use, one of which is the spread of the helical beam accampanying with the increase of propagation distances. In this paper, the characteristics considering the distance attenuation and/or the ground reflected wave are evaluated for various condition on the distance between the transmitter and the receiver and the radius of the transmit and/or receive antenna array in the line-of-sight environment. As the results, it has been shown that spreading of the helical beam can be suppressed by setting the radius of the transmit antenna array larger, and that the optimum radius of the receive antenna array exists depending on the radius of the transmit antenna array and the distance between the transmitter and the receiver. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Orbital Angular Momentum (OAM) Mode Multiplexing Transmission / Uniform Circular Array / Spatial Multiplexing / Ground Reflection |
| Paper # | RCS2018-69 |
| Date of Issue | 2018-06-13 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2018/6/20(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagasaki University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
| Chair | Tomoaki Otsuki(Keio Univ.) |
| Vice Chair | Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) |
| Secretary | Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara |
| Assistant | Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of OAM Based Mode Division Multiplexing Transmission in Different Propagation Environments |
| Sub Title (in English) | |
| Keyword(1) | Orbital Angular Momentum (OAM) Mode Multiplexing Transmission |
| Keyword(2) | Uniform Circular Array |
| Keyword(3) | Spatial Multiplexing |
| Keyword(4) | Ground Reflection |
| 1st Author's Name | Ayano Yamamoto |
| 1st Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 2nd Author's Name | Toshihiko Nishimura |
| 2nd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 3rd Author's Name | Takeo Ohgane |
| 3rd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 4th Author's Name | Tomoya Tandai |
| 4th Author's Affiliation | Toshiba Corporation(Toshiba) |
| 5th Author's Name | Daisuke Uchida |
| 5th Author's Affiliation | Toshiba Corporation(Toshiba) |
| Date | 2018-06-22 |
| Paper # | RCS2018-69 |
| Volume (vol) | vol.118 |
| Number (no) | RCS-101 |
| Page | pp.pp.201-206(RCS), |
| #Pages | 6 |
| Date of Issue | 2018-06-13 (RCS) |