| Presentation | 2021-05-21 Relationship between cumulative time percentages and equivalent path lengths of rain attenuation in Ku-band satellite communication links Yasuyuki Maekawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The long-term rain attenuation statistics of cumulative time percentages are obtained from Ku band satellite signal observations conducted at Osaka Electro-Communication University in Neyagawa, Osaka, during the past 32 years from 1988 to 2019. The long-term statistics for the latter 13 years after 2006 indicate the cumulative time percentages that considerably exceed those of the ITU-R predictions. The increasing rates of the statistics are caused by the increase of equivalent path lengths due to those of the horizontal reduction factor and vertical adjustment factor in the ITU-R predictions. The increase of the vertical adjustment factor up to the ratio of 1.36 is found to be related to that of average equivalent path length in each rainfall event, while the increase of horizontal reduction facto up to the radio of 1.10 is found to be related to that of duration time of 5 dB attenuation. With these corrections of the horizontal reduction factor and the vertical adjustment factor, the ITU-R predictions show a good agreement of the cumulative timer percentages observed during 2007-2019. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Satellite communications / Rain attenuation / Ku-band / Long-term statistics / Duration time / Equivalent path length |
| Paper # | WBS2021-19,RCC2021-19,SAT2021-17 |
| Date of Issue | 2021-05-13 (WBS, RCC, SAT) |
| Conference Information | |
| Committee | WBS / RCC / SAT / MICT |
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| Conference Date | 2021/5/20(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online (Zoom) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Coding, Modulation, Signal processing, Reliable Communication and Control, Healthcare and Medical Information Communication Technologies, and General |
| Chair | Masanori Hamamura(Kochi Univ. of Tech.) / HUAN-BANG LI(NICT) / Hisashi Sujikai(NHK) / Eisuke Hanada(Saga Univ.) |
| Vice Chair | Takashi Shono(INTEL) / Masahiro Fujii(Utsunomiya Univ.) / Shunichi Azuma(Nagoya Univ.) / Koji Ishii(Kagawa Univ.) / Hiroyasu Ishikawa(Nihon Univ.) / Tetsushi Ikegami(Meiji Univ.) / Hirokazu Tanaka(Hiroshima City Univ.) / Daisuke Anzai(Nagoya Inst. of Tech.) |
| Secretary | Takashi Shono(Okayama Univ. of Science) / Masahiro Fujii(National Defence Academy) / Shunichi Azuma(CRIEPI) / Koji Ishii(Osaka Univ.) / Hiroyasu Ishikawa(NHK) / Tetsushi Ikegami(KDDI Research) / Hirokazu Tanaka(Kobe Univ.) / Daisuke Anzai(Yokohama National Univ.) |
| Assistant | Duong Quang Thang(NAIST) / Masafumi Moriyama(NICT) / Masayuki Kinoshita(Chiba Univ. of Tech.) / SHAN LIN(NICT) / Masaki Ogura(Osaka Univ.) / Takuya Okura(NICT) / Daisuke Goto(NTT) / Keita Saku(Kyushu Univ.) / Kai Ishida(KISTEC) / Kento Takabayashi(Okayama Pref. Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Wideband System / Technical Committee on Reliable Communication and Control / Technical Committee on Satellite Telecommunications / Technical Committee on Healthcare and Medical Information Communication Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relationship between cumulative time percentages and equivalent path lengths of rain attenuation in Ku-band satellite communication links |
| Sub Title (in English) | |
| Keyword(1) | Satellite communications |
| Keyword(2) | Rain attenuation |
| Keyword(3) | Ku-band |
| Keyword(4) | Long-term statistics |
| Keyword(5) | Duration time |
| Keyword(6) | Equivalent path length |
| 1st Author's Name | Yasuyuki Maekawa |
| 1st Author's Affiliation | Osaka Electro-Communication University(Osaka Electro-Commun. Univ.) |
| Date | 2021-05-21 |
| Paper # | WBS2021-19,RCC2021-19,SAT2021-17 |
| Volume (vol) | vol.121 |
| Number (no) | WBS-24,RCC-25,SAT-26 |
| Page | pp.pp.101-106(WBS), pp.101-106(RCC), pp.89-94(SAT), |
| #Pages | 6 |
| Date of Issue | 2021-05-13 (WBS, RCC, SAT) |