2009 Fiscal Year Final Research Report
A Study for Low-cost and High Availability of the Fixed Satellite Services by the Time Delayed/Satellite Diversities
| Project/Area Number |
18560382
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Hokkaido Institute of Technology |
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Principal Investigator |
HATSUDA Takeshi Hokkaido Institute of Technology, 工学部, 非常勤講師 (10198757)
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| Co-Investigator(Kenkyū-buntansha) |
MAEKAWA Yasuyuki 大阪電気通信大学, 工学部, 教授 (30181572)
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| Project Period (FY) |
2006 – 2009
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| Keywords | 固定衛星業務 / Ku(14 / 12GHz)帯 / Ka(30 / 20GHz)帯 / ダイバーシティ方式 / 時間遅延ダイバーシティ方式 / サテライトダイバーシティ方式 / 時間遅延 / サテライトダイバーシティ方式 |
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| Research Abstract |
This study deals with the Ku-band Time-Delayed Diversity/Satellite Diversity (TDD/Sat.D) system, which is combination of a TDD system and a Sat.D system to overcome heavy rain attenuation in the Ku-band Fixed Satellite Service (FSS) systems. To verify the characteristics of the TDD/Sat.D system, propagation experiments are carried out the rain attenuation data measured and processed for assess the system characteristic. From the calculated results, it can be clarified that by using the TDD/Sat.D system, the satellite link unavailability time percentage can be improved by approximately 1/10 with a delay time τ=10～20 minutes.
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Research Products
(25 results)
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[Journal Article] Comparison of Characteristics of Measured Ku-band Satellite Diversity (Sat. D) Unit and Theoretical Sat.2009
Author(s)
T. Hatsuda, Y. Iwatani, M. Sasaki, Y. Tsushima, N. Yosimura, T. Zakouji, K. Kawasaki, M. Kuroda, K. Imai, Y. Maekawa
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Journal Title
D System、2009 IEEE AP-S International Symposium 310,9
Pages: 310
Peer Reviewed
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[Journal Article] Ku-band Time-Delayed Diversity /Satellite Diversity (TDD/Sat. D)System for Improving Link2008
Author(s)
T. Hatsuda, Y. Iwatani, M. Sasaki, Y. Tsushima, N. Yosimura, T. Zakouji, K. Kawasaki, M. Kuroda, K. Imai, Y. Maekawa
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Journal Title
Availability Using Lune-Q Antenna 127,6
Pages: 127
Peer Reviewed
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