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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 31  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SAT, SANE
(Joint)
2024-02-09
10:45
Kagoshima AmaHome PLAZA (Amami City Shimin Koryu Center)
(Primary: On-site, Secondary: Online)
A study on the rain attenuation statistics using the different Ku-band satellite signals measured at multiple locations
Yasuyuki Maekawa (Osaka Electro-Commun. Univ.), Koichi Harada, Junichi Abe, Fumihiro Yamashita (NTT) SAT2023-71
The signal levels of Ku-band BS broadcast radio wave and JCSAT-5A beacon radio wave have been simultaneously measured at... [more] SAT2023-71
pp.63-68
MICT, WBS, RCC, SAT
(Joint) [detail]
2023-05-26
09:25
Tokyo TOKYO BIG SIGHT
(Primary: On-site, Secondary: Online)
A study on the rain attenuation duration characteristics using the different Ku-band satellite signals measured at multiple locations
Yasuyuki Maekawa (Osaka Electro-Commun. Univ.), Koichi Harada, Junichi Abe, Fumihiro Yamashita (NTT Corporation) SAT2023-5 MICT2023-5
The signal levels of Ku-band BS broadcast radio waves and JCSAT-5A beacon radio waves have been simultaneously measured ... [more] SAT2023-5 MICT2023-5
pp.20-25
SAT, KOSST 2022-10-06
16:55
Fukuoka
(Primary: On-site, Secondary: Online)
A study on Site Diversity Effect between Different Satellites using Rain Attenuation Characteristics of Ku-band Satellite Communication Links
Yasuyuki Maekawa (Osaka Electro-Commun. Univ.), Koichi Harada, Junichi Abe, Fumihiro Yamashita (NTT) SAT2022-48
The signal levels of Ku-band BS broadcast radio waves and JCSAT-5A beacon radio waves have been simultaneously measured ... [more] SAT2022-48
pp.20-24
RCS, SR, SRW
(Joint)
2022-03-03
14:55
Online Online [Invited Lecture] Expectations for Terahertz Radio
Iwao Hosako (NICT) RCS2021-281 SR2021-108 SRW2021-81
Beyond 5G/6G discussions have begun, and various white papers have expressed expectations for the utilization of the ter... [more] RCS2021-281 SR2021-108 SRW2021-81
pp.143-154(RCS), pp.101-112(SR), pp.49-60(SRW)
WBS, RCC, ITS 2021-12-13
13:30
Online Online LoRa Radio Propagation Characteristics over Pseudo-sea Path and their Measurement Systems
Yusuke Kakimoto, Shinji Tsuzuki, Masashi Sugimoto (Ehime Univ.), Huan-Bang Li (NICT), Kazuhiko Nagao (National Institute of Technology, Yuge College) WBS2021-46 ITS2021-20 RCC2021-53
A wireless system using LoRa (Long Range; 920 MHz band; less than 20 mW), which is a kind of LPWA (Low Power Wide Area) ... [more] WBS2021-46 ITS2021-20 RCC2021-53
pp.71-75
AP 2021-10-07
09:00
Online Online [Tutorial Lecture] A Study on the Measurement and Estimation Methods of Rain Attenuation Characteristics in Satellite Communications Links
Yasuyuki Maekawa (Osaka Electro-Commun. Univ.) AP2021-68
Rain attenuation characteristics of Ka and Ku band satellite communication links are presented using the domestic CS (19... [more] AP2021-68
pp.1-6
AP 2021-03-26
14:00
Online Online [Tutorial Lecture] International standardization status of HAPS propagation model
Hideki Omote, Shoma Tanaka, Sho Kimura, Hoyu Lin, Akihiro Sato (Softbank) AP2020-140
HAPS (High-Altitude Platform Station) is a radio station installed on an Unmanned Aerial Vehicle (UAV), such as a balloo... [more] AP2020-140
pp.48-53
SR 2020-11-20
10:00
Online Online Compensation of Clutter Loss Considering Antenna Height Difference and Dominant Path for Spectrum Sharing
Sunao Miyamoto, Keita Katagiri (UEC), Koya Sato (TUS), Koichi Adachi, Takeo Fujii (UEC) SR2020-39
In recent years, spectrum sharing technology is attracting attention to solve the problem of spectrum shortage. In order... [more] SR2020-39
pp.108-113
SAT 2019-10-11
09:50
Fukuoka JR HAKATA CITY {10F RoomA+B} A Comparison between Long-term Rain Attenuation Statistics and ITU-R Prediction Methods in Ku-Band Satellite Links
Kosuke Yamasaki, Yasuyuki Maekawa (Osaka Electro-Comm. Univ.) SAT2019-57
A remarkable increasing tendency of yearly rain attenuation statistics of cumulative time percentages is obtained from l... [more] SAT2019-57
pp.61-64
MW
(2nd)
2019-06-26
- 2019-06-28
Overseas RUS, Bangkok, Thailand [Invited Talk] [Invited] Study on Spectrum in the Frequency Range 100-450 GHz at ITU-R
Hiroyo Ogawa (NICT)
The activities on spectrum studies in the frequency range 100-450GHz at ITU-R are overviewed including the agenda items ... [more]
MW, ICD 2019-03-14
16:15
Okinawa   [Invited Talk] Work on spectrum in the frequency range 100-450 GHz at ITU-R
Hiroyo Ogawa (NICT) MW2018-167 ICD2018-111
The activities in the frequency range 100-450GHz at ITU-R is overviewed and the agenda items above 100 GHz to be discuss... [more] MW2018-167 ICD2018-111
pp.61-66
AP 2018-05-17
13:05
Kumamoto Kumamoto Univ. Antenna Height Dependency of Clutter Loss for An Isolated Building by Measurement in Multi-Frequency Bands using A Drone
Motoharu Sasaki, Mitsuki Nakamura, Nobuaki Kuno, Yasushi Takatori (NTT) AP2018-18
In the three frequency bands of 2.2 GHz, 4.7 GHz, and 26.4 GHz, the clutter loss caused by an isolated building was meas... [more] AP2018-18
pp.29-33
RCS, NS
(Joint)
2017-12-14
14:20
Hiroshima Aster Plaza [Invited Lecture] Overview on 5G Requirements and Potential Evolution Directions Toward B5G
Anass Benjebbour, Yoshihisa Kishiyama (NTT DOCOMO) NS2017-129 RCS2017-255
Standardization of the new radio interface for fifth generation mobile communications systems (5G) is advancing at the 3... [more] NS2017-129 RCS2017-255
pp.19-24(NS), pp.31-36(RCS)
SAT 2017-10-26
11:25
Okinawa Okinawa Cellular Telephone Company Interference monitoring scheme using feature detection between satellite and cellular systems (28 GHz)
Kanshiro Kashiki, Tomoki Sada (KDDI Research), Akihide Nagamine, Fumio Watanabe (Titec) SAT2017-42
This manuscript presents study results for an interference monitoring scheme between satellite and cellular systems in t... [more] SAT2017-42
pp.23-28
RCS 2017-10-20
15:50
Miyagi Tohoku Institute of Technology Radio regulations and provisions in the 90-GHz band spectrum
Hiroyo Ogawa, Tetsuya Kawanishi, Atsushi Kanno, Naokatsu Yamamoto (NICT) RCS2017-199
Frequency usage of 90-GHz band is proposed as new spectrum for the mobile services which mitigates congestion of radio f... [more] RCS2017-199
pp.173-175
SRW 2016-12-19
14:25
Tokyo Tokyo City Univ., Setagaya Campus [Invited Talk] An Activity of ITU-R SG3 for Millimeter-wave usage in Fifth-Generation Mobile Communication Systems
Motoharu Sasaki, Minoru Inomata, Wataru Yamada, Yasushi Takatori (NTT) SRW2016-64
To discuss a frequency allocation for new wireless communication systems, a study of the frequency sharing and interfere... [more] SRW2016-64
pp.43-47
SRW 2016-12-19
15:15
Tokyo Tokyo City Univ., Setagaya Campus [Invited Talk] *
Iwao Hosako (NICT) SRW2016-65
We report the background, standardization trends, the situation of R & D program being promoted in each country, etc. ab... [more] SRW2016-65
pp.49-50
MW 2014-11-21
13:30
Nagasaki Nagasaki Univ. [Invited Lecture] Development and Field Trial Result of VHF Wireless System for Network Business Operation
Kiyohiko Itokawa, Fusao Nuno, Nobuhiko Tachikawa, Fumiaki Nagase, Junichi Iwatani, Teruyoshi Shinagawa, Hiroki Yoshioka, Takahiro Tsuchiya, Toshiyuki Shintaku (NTT) MW2014-142
NTT has utilized various wireless systems to resume network facilities rapidly in a wide area of disaster and we have de... [more] MW2014-142
pp.101-106
SR 2014-10-30
15:00
Overseas I2R, Singapore [Requested Talk] Challenges towards 100Gbit/s wireless using THz bands -- Progresses on device technology, standardization at IEEE802.15, and regulatory issues related to ITU-R --
Iwao Hosako, Akifumi Kasamatsu, Norihiko Sekine, Hiroyo Ogawa (NICT) SR2014-74
This presentation overviews technical challenges towards 100Gbit/s wireless using THz bands, including progresses on dev... [more] SR2014-74
pp.81-88
MW
(Workshop)
2012-08-08
- 2012-08-10
Overseas Chulalongkorn University, Bangkok, Thailand [Invited Talk] Standardization activities on microwave and millimeter-wave related issues within APT and ITU-R
Hiroyo Ogawa (ARIB)
APT and ITU-R are working on standardization of microwave and millimeter-wave related systems from terrestrial to satell... [more]
 Results 1 - 20 of 31  /  [Next]  
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