| Presentation | 2021-03-05 Compensation for axis misalignment of UCA with OAM beam control Nobuhiko Sakuraya, 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) | In recent years, mobile data traffic has increased explosively due to increasing wireless devices. Capacity enhancement is required for fronthaul and backhaul accordingly. Spatial multiplex transmission using orbital angular momentum (OAM) has been attracting attention as a solution. One of the OAM multiplexing methods is the use of uniform circular array (UCA). It is known that the performance deteriorates seriously if there are misalignments of the UCA at transmitter and/or receiver. In this paper, we propose a method of compensation for the degradation with beam control and/or MMSE weights in the case that the UCA installation height is shifted on the transmitter or receiver and the UCA surface is slanted on the transmitter. Specifically, the received power is increased by adjusting the main beam toward the transmit UCA to compensate for the degradation. It is found that by using beam control, total throughput is improved compared to using only MMSE weights. By using the beam control method together, it was found that the method can be applied to a wide range of angles. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Orbital angular momentum / Uniform circular array / Spatial multiplexing / misalignment / beam control |
| Paper # | RCS2020-260 |
| Date of Issue | 2021-02-24 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2021/3/3(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Masayuki Ariyoshi(NEC) / Satoshi Denno(Okayama Univ.) |
| Vice Chair | Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Suguru Kameda(Tohoku Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Inst. of Tech.) / Hanako Noda(Anritsu) |
| Secretary | Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(NEC) / Tomoya Tandai(ATR) / Suguru Kameda(Univ. of Electro-Comm.) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(NTT) / Keiichi Mizutani(NIigata Univ.) / Kentaro Saito / Hanako Noda |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) / Kentaro Kobayashi(Nagoya Univ.) / Masaaki Fuse(Anritsu) / Akihito Noda(Nanzan Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Compensation for axis misalignment of UCA with OAM beam control |
| Sub Title (in English) | |
| Keyword(1) | Orbital angular momentum |
| Keyword(2) | Uniform circular array |
| Keyword(3) | Spatial multiplexing |
| Keyword(4) | misalignment |
| Keyword(5) | beam control |
| 1st Author's Name | Nobuhiko Sakuraya |
| 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(Toshiba) |
| 5th Author's Name | Daisuke Uchida |
| 5th Author's Affiliation | Toshiba(Toshiba) |
| Date | 2021-03-05 |
| Paper # | RCS2020-260 |
| Volume (vol) | vol.120 |
| Number (no) | RCS-404 |
| Page | pp.pp.261-266(RCS), |
| #Pages | 6 |
| Date of Issue | 2021-02-24 (RCS) |