| Presentation | 2021-11-26 [Invited Talk] R&D for Higher Frequency Bands Radio-over-Fiber Systems Yushi Shirato, Kota Ito, Mizuki Suga, Takuto Arai, Yuta Takahashi, Yasuyoshi Yamamoto, Naoki Kita, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to enhance the transmission capacity, it is effective to use higher frequency band radio waves with abundant frequency resources. However, since the propagation loss increases as the frequency becomes higher, it is necessary to deploy radio equipment densely. Therefore, by applying A-RoF (Analog Radio-over-Fiber) and consolidating the signal processing functions of the radio base station to the central station CS (Central Station), RRU (Remote Radio Unit) can besimplified and be reduced its power consumption. We have been proposing such a system configuration and have reported on the indispensable remote beamforming method. In this presentation, we will outline the proposed remote beamforming methods, and then give a preliminary report on the results of the ongoing study using prototype. It is confirmed that the EVM of the downlink signals transmitted from the RRU assuming indoor condition is about 3.2%, which is better than that shown in 3GPP specification. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | radio-over-fiber / remote beamforming / millimeter-wave |
| Paper # | MWP2021-31 |
| Date of Issue | 2021-11-19 (MWP) |
| Conference Information | |
| Committee | MWP |
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| Conference Date | 2021/11/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Device, etc. |
| Chair | Akihiko Hirata(Chiba Inst. of Tech.) |
| Vice Chair | Atsushi Kanno(NICT) |
| Secretary | Atsushi Kanno(Yazaki) |
| Assistant | Li Yi(Osaka Univ.) / Yuya Yamaguchi(NICT) |
| Paper Information | |
| Registration To | Technical Committee on Microwave and Millimeter-wave Photonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Talk] R&D for Higher Frequency Bands Radio-over-Fiber Systems |
| Sub Title (in English) | * |
| Keyword(1) | radio-over-fiber |
| Keyword(2) | remote beamforming |
| Keyword(3) | millimeter-wave |
| 1st Author's Name | Yushi Shirato |
| 1st Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 2nd Author's Name | Kota Ito |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 3rd Author's Name | Mizuki Suga |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 4th Author's Name | Takuto Arai |
| 4th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 5th Author's Name | Yuta Takahashi |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 6th Author's Name | Yasuyoshi Yamamoto |
| 6th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 7th Author's Name | Naoki Kita |
| 7th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| Date | 2021-11-26 |
| Paper # | MWP2021-31 |
| Volume (vol) | vol.121 |
| Number (no) | MWP-273 |
| Page | pp.pp.6-11(MWP), |
| #Pages | 6 |
| Date of Issue | 2021-11-19 (MWP) |