| Presentation | 2021-11-11 A Study of the Relationship between Antenna Height and K-factor with Drone Relay Stations Shun Dohi, Kentaro Nishimori, Wataru Yamada, Nobuaki Kuno, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Currently, the use of microwave and millimeter-wave bands is being considered for outdoor applications to cope with the increase in communication traffic due to the diversification of wireless communications such as the IoT. In these frequency bands, the propagation loss factor is about three to four powers when the transmission and reception propagation paths are out of sight, so it is necessary to find a way to reduce the propagation loss. We proposed a LoS-MIMO transmission method using a drone as a relay station, where the received power and the K-factor, which is the ratio of the power of standing waves to irregular waves, are known to affect the performance of LoS-MIMO. Therefore, we measured the received power using a drone in the 5/26 GHz band. This study clarifies how the K-factor changes when the antenna height is changed. From the experimental propagation loss, the relationship between the antenna height and the K-factor is shown in a simple equation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Drone Relay Station / K-factor / Antenna height |
| Paper # | AP2021-113 |
| Date of Issue | 2021-11-03 (AP) |
| Conference Information | |
| Committee | AP / RCS |
|---|---|
| Conference Date | 2021/11/10(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | NBC-Bekkan (Nagasaki) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Hiroshi Yamada(Niigata Univ.) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Mitoshi Fujimoto(Fukui Univ) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) |
| Secretary | Mitoshi Fujimoto(NTT DOCOMO) / Toshihiko Nishimura(National Defense Academy) / Tomoya Tandai(NEC) / Fumihide Kojima(Panasonic) |
| Assistant | Dr. Kim(Niigata Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Radio Communication Systems |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study of the Relationship between Antenna Height and K-factor with Drone Relay Stations |
| Sub Title (in English) | |
| Keyword(1) | Drone Relay Station |
| Keyword(2) | K-factor |
| Keyword(3) | Antenna height |
| 1st Author's Name | Shun Dohi |
| 1st Author's Affiliation | Niigata University(Niigata Univ.) |
| 2nd Author's Name | Kentaro Nishimori |
| 2nd Author's Affiliation | Niigata University(Niigata Univ.) |
| 3rd Author's Name | Wataru Yamada |
| 3rd Author's Affiliation | NTT Access Network Service Systems Laboratories(NTT) |
| 4th Author's Name | Nobuaki Kuno |
| 4th Author's Affiliation | NTT Access Network Service Systems Laboratories(NTT) |
| Date | 2021-11-11 |
| Paper # | AP2021-113 |
| Volume (vol) | vol.121 |
| Number (no) | AP-233 |
| Page | pp.pp.71-74(AP), |
| #Pages | 4 |
| Date of Issue | 2021-11-03 (AP) |