| Presentation | 2018-11-22 A Study on Efficient Spectrum Utilization for Feeder Link using Multipe Gateways in HAPS System Takafumi Fujii, Yoshichika Ohta, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | HAPS (High Altitude Platform Station), which is a stratosphere platform around 20Km altitude, cellular communication service makes it possible to directly communicate among ordinary land cellular phones. HAPS is also a promising system for service area expansions as well as reliable communication methods at various natural disasters. HAPS communication system is composed of service links which provide communications between HAPS and land cellular phones and a feeder link which establishes a communication between HAPS and a base station (Gateway). The communication capacity of HAPS service link is determined by the communication capacity of its feeder link, which is equivalent to repeater frequency. Therefore, an efficient spectrum usage of the feeder link is indispensable. In this paper, we propose a “Multiple Gateway System” for an efficient spectrum usage. Multiple Gateways placed on the land transmit and receive different feeder link signals at the same frequency. The proposed system can improve the efficient spectrum utilization as the number of Gateways increases by eliminating the interferences among feeder links. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | High Altitude Platform Station / MIMO / Interference canceller |
| Paper # | RCS2018-203 |
| Date of Issue | 2018-11-13 (RCS) |
| Conference Information | |
| Committee | RCS / AP |
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| Conference Date | 2018/11/20(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okinawa Industry Support Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Tomoaki Otsuki(Keio Univ.) / Jiro Hirokawa(Tokyo Tech.) |
| Vice Chair | Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Ryo Yamaguchi(SoftBank) |
| Secretary | Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara(Saitama Univ.) / Ryo Yamaguchi(Mitsubishi Electric) |
| Assistant | Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Michitaka Ameya(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Antennas and Propagation |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Efficient Spectrum Utilization for Feeder Link using Multipe Gateways in HAPS System |
| Sub Title (in English) | |
| Keyword(1) | High Altitude Platform Station |
| Keyword(2) | MIMO |
| Keyword(3) | Interference canceller |
| 1st Author's Name | Takafumi Fujii |
| 1st Author's Affiliation | HAPSmobile.inc(HAPSmobile) |
| 2nd Author's Name | Yoshichika Ohta |
| 2nd Author's Affiliation | HAPSmobile.inc(HAPSmobile) |
| Date | 2018-11-22 |
| Paper # | RCS2018-203 |
| Volume (vol) | vol.118 |
| Number (no) | RCS-311 |
| Page | pp.pp.143-148(RCS), |
| #Pages | 6 |
| Date of Issue | 2018-11-13 (RCS) |