| Presentation | 2018-03-01 Performance Evaluation of Digital Beamforming by Outdoor Trials for 5G Massive MIMO in Low SHF Bands Tatsuki Okuyama, Kohei Izui, Kenichiro Yamazaki, Satoshi Suyama, Jun Mashino, Yukihiko Okumura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The fifth-generation (5G) mobile communication system has attracted much attention to provide various kinds of mobile services and applications for 2020 and beyond. Massive MIMO in high frequency bands is well known as promising technology to increase both system capacity and data rates dramatically. Massive MIMO can compensate for radio propagation loss by beamforming (BF) and increase frequency efficiency by MIMO spatial-division-multiplexing to multiple user equipment. BF algorithm suitable for each frequency has been studied. Although Massive MIMO has been studied in several frequency bands, this paper focuses on low SHF bands (3-6 GHz). Recently works have been shown performances of digital BF algorithms and propagation trials on low SHF bands. However, transmission performances using experimental equipment have not been clarified enough. Therefore, we developed fully digital Massive MIMO equipment using 4.65 GHz band and this paper shows an effectiveness of fully digital Massive MIMO by measuring coverage and four user multiplexing throughput in actual environment. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | 5G / Low SHF band / Digital Beamforming / Outdoor Transmission Trials |
| Paper # | RCS2017-352 |
| Date of Issue | 2018-02-21 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2018/2/28(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | YRP |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Hidekazu Murata(Kyoto Univ.) / Kenta Umebayashi(Tokyo Univ. of Agric. and Tech.) / Tadao Nakagawa(Tottori Univ.) |
| Vice Chair | Yukitoshi Sanada(Keio Univ.) / Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Masayuki Ariyoshi(NEC) / Suguru Kameda(Tohoku Univ.) / Satoshi Denno(Okayama Univ.) / Makoto Hamaminato(Fujitsu labs.) |
| Secretary | Yukitoshi Sanada(Toshiba) / Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NICT) / Masayuki Ariyoshi(ATR) / Suguru Kameda(NICT) / Satoshi Denno(Kyoto Univ.) / Makoto Hamaminato |
| Assistant | Tetsuya Yamamoto(Panasonic) / Koichi Ishihara(NTT) / Kazushi Muraoka(NEC) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Mamiko Inamori(Tokai Univ.) / Hiroyuki Shiba(NTT) / Gia Khanh Tran(Tokyo Inst. of Tech.) / Syusuke Narieda(NIT, Akashi College) / Kentaro Saito(Tokyo Inst. of Tech.) / Hiromasa Yamauchi(Fujitsu labs.) |
| 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) | Performance Evaluation of Digital Beamforming by Outdoor Trials for 5G Massive MIMO in Low SHF Bands |
| Sub Title (in English) | |
| Keyword(1) | 5G |
| Keyword(2) | Low SHF band |
| Keyword(3) | Digital Beamforming |
| Keyword(4) | Outdoor Transmission Trials |
| 1st Author's Name | Tatsuki Okuyama |
| 1st Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 2nd Author's Name | Kohei Izui |
| 2nd Author's Affiliation | NEC Corporation(NEC) |
| 3rd Author's Name | Kenichiro Yamazaki |
| 3rd Author's Affiliation | NEC Corporation(NEC) |
| 4th Author's Name | Satoshi Suyama |
| 4th Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 5th Author's Name | Jun Mashino |
| 5th Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| 6th Author's Name | Yukihiko Okumura |
| 6th Author's Affiliation | NTT DOCOMO, INC.(NTT DOCOMO) |
| Date | 2018-03-01 |
| Paper # | RCS2017-352 |
| Volume (vol) | vol.117 |
| Number (no) | RCS-456 |
| Page | pp.pp.203-208(RCS), |
| #Pages | 6 |
| Date of Issue | 2018-02-21 (RCS) |