| Presentation | 2003/2/26 Experiment of IMT-2000 Communications using Solar-Powered Plane Flying at the Stratosphere : Link Quality Evaluation Masayuki OODO, Hiroyuki TSUJI, Ryu MIURA, Masaaki MARUYAMA, Mikio SUZUKI, hisashi SASAMOTO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In June-July 2002, we carried out the World's first experiment of 3rd generation (3G) mobile communications (IMT-2000, 3GPP) by the radio relay at an altitude of 20 km using unmanned stratospheric-flying solar-electric airplane "Pathfinder Plus". The experiment demonstrated viability of IMT-2000 communications using high altitude platform station (HAPS). The IMT-2000 experiments were carried out twice in Kauai Island, Hawaii under the collaboration between Japanese telecom mission side (CRL and TAO) and U. S. flight mission side (AeroVironment Inc., SkyTower Inc. and NASA). In the first test, we could not establish the IMT-2000 link via Pathfinder Plus flying at an altitude of 20 km since onboard transponder received unexpected interference in the IMT-2000 reverse link, coming from a cellular system in commercial use in Oahu Island 200 km away from Kauai Island. Therefore we managed to establish the link by connecting an external antenna with high gain to the cellular phone. After the first flight test, we developed 9-element receiving array antenna with low sidelobe level so as to suppress the impinging interference signals. We succeeded in the IMT-2000 communication with a cellular phone without the external antenna. This paper presents the experimental and analytical results. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Stratospheric Platform / Altitude of 20km / Solar-Powered Plane / IMT-2000 / Link Quality / Temperature of Onboard Equipments |
| Paper # | SST2002-80,A・P2002-179,RCS2002-296,MoMuC2002-105,MW2002-187 |
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| Conference Information | |
| Committee | RCS |
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| Conference Date | 2003/2/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Experiment of IMT-2000 Communications using Solar-Powered Plane Flying at the Stratosphere : Link Quality Evaluation |
| Sub Title (in English) | |
| Keyword(1) | Stratospheric Platform |
| Keyword(2) | Altitude of 20km |
| Keyword(3) | Solar-Powered Plane |
| Keyword(4) | IMT-2000 |
| Keyword(5) | Link Quality |
| Keyword(6) | Temperature of Onboard Equipments |
| 1st Author's Name | Masayuki OODO |
| 1st Author's Affiliation | Yokosuka Radio Communications Research Center, Communications Research Laboratory() |
| 2nd Author's Name | Hiroyuki TSUJI |
| 2nd Author's Affiliation | Yokosuka Radio Communications Research Center, Communications Research Laboratory |
| 3rd Author's Name | Ryu MIURA |
| 3rd Author's Affiliation | Yokosuka Radio Communications Research Center, Communications Research Laboratory |
| 4th Author's Name | Masaaki MARUYAMA |
| 4th Author's Affiliation | Yokosuka Stratospheric Platform Research Center, Telecommunications Advancement Organization of Japan |
| 5th Author's Name | Mikio SUZUKI |
| 5th Author's Affiliation | Yokosuka Stratospheric Platform Research Center, Telecommunications Advancement Organization of Japan |
| 6th Author's Name | hisashi SASAMOTO |
| 6th Author's Affiliation | Communications Equipment Engineering Department II, Japan Radio Co., Ltd. |
| Date | 2003/2/26 |
| Paper # | SST2002-80,A・P2002-179,RCS2002-296,MoMuC2002-105,MW2002-187 |
| Volume (vol) | vol.102 |
| Number (no) | 674 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |