| Presentation | 2022-01-21 [Encouragement Talk] Ultra-Wide Coverage and High-Capacity Massive MIMO System for High-Altitude Platform Stations Koji Tashiro, Kenji Hoshino, Atsushi Nagate, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Coverage extension to the sky, seas, and elsewhere is one of the important concepts of the 6th generation (6G) mobile communications. High-altitude platform stations (HAPS) have attracted much attention as a leading candidate for the coverage extension. Service link capacity can be increased by using massive MIMO (mMIMO) systems with a large number of antenna elements. However, the coverage radius achieved by a conventional planar array antenna is limited to only tens of kilometers. This paper proposes a cylindrical mMIMO system that achieves ultra-wide coverage of a radius 100 km as well as high capacity. Assuming the service area with a radius 100 km, simulation results demonstrate that the proposed system improves the signal-to-interference-plus-noise ratio around the boundaries of the area by about 9 dB, and it achieves around 1.5 times as high capacity as a conventional mMIMO system with the planar array antenna. In addition, a low-complexity user selection algorithm is also proposed, which can efficiently group the users with low spatial correlations based on their angle information. The proposed algorithm is evaluated under real-world population distribution scenarios in Kanto region. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | high-altitude platform station (HAPS) / cylindrical array antenna / massive MIMO / user selection / 6G |
| Paper # | IT2021-79,SIP2021-87,RCS2021-247 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |
| Conference Information | |
| Committee | RCS / SIP / IT |
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| Conference Date | 2022/1/20(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Yukihiro Bandou(NTT) / Tadashi Wadayama(Nagoya Inst. of Tech.) |
| Vice Chair | Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Toshihisa Tanaka(Tokyo Univ. Agri.&Tech.) / Takayuki Nakachi(Ryukyu Univ.) / Tetsuya Kojima(Tokyo Kosen) |
| Secretary | Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima(Xiaomi) / Toshihisa Tanaka(Takushoku Univ.) / Takayuki Nakachi(Tokyo Univ. Agri.&Tech.) / Tetsuya Kojima(Saitamai Univ.) |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Taichi Yoshida(UEC) / Seisuke Kyochi(Univ. of Kitakyushu) / Masanori Hirotomo(Saga Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Signal Processing / Technical Committee on Information Theory |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Encouragement Talk] Ultra-Wide Coverage and High-Capacity Massive MIMO System for High-Altitude Platform Stations |
| Sub Title (in English) | |
| Keyword(1) | high-altitude platform station (HAPS) |
| Keyword(2) | cylindrical array antenna |
| Keyword(3) | massive MIMO |
| Keyword(4) | user selection |
| Keyword(5) | 6G |
| 1st Author's Name | Koji Tashiro |
| 1st Author's Affiliation | SoftBank Corp.(SoftBank) |
| 2nd Author's Name | Kenji Hoshino |
| 2nd Author's Affiliation | SoftBank Corp.(SoftBank) |
| 3rd Author's Name | Atsushi Nagate |
| 3rd Author's Affiliation | SoftBank Corp.(SoftBank) |
| Date | 2022-01-21 |
| Paper # | IT2021-79,SIP2021-87,RCS2021-247 |
| Volume (vol) | vol.121 |
| Number (no) | IT-327,SIP-328,RCS-329 |
| Page | pp.pp.288-288(IT), pp.288-288(SIP), pp.288-288(RCS), |
| #Pages | 1 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |