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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 61  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SAT, RCS
(Joint)
2022-08-25
16:40
Hokkaido
(Primary: On-site, Secondary: Online)
[Encouragement Talk] Development of extreme coverage communication system extended by Non-Terrestrial Network(NTN) -- Evaluation of routing method by NTN simulator --
Hisayoshi Kano, Munehiro Matsui, Jun-ichi Abe, Fumihiro Yamashita (NTT)
 [more]
SAT, SANE
(Joint)
2022-02-24
10:55
Online Online Development of extreme coverage communication system extended by Non-Terrestrial Network(NTN) -- A proposal on a routing algorithm that determines the optimal data transfer route by calculating the congestion degree and delay time --
Hisayoshi kano, Munehiro Matsui, Jun-ichi Abe (NTT), Yuki Hokazono, Hinata Kohara, Yoshihisa Kishiyama (NTTドコモ), Fumihiro Yamashita (NTT) SAT2021-56
NTT has been proposing an IOWN space integrated computing network concept. Extreme coverage communication systems consis... [more] SAT2021-56
pp.19-24
SAT, SANE
(Joint)
2022-02-24
15:50
Online Online Evaluation of antenna pointing control performance onboard fixed-wing UAV in HAPS wireless relay system
Koki Hamajima, Kei Yasukawa, Masazumi Ueba (Muroran IT), Hisayoshi Kanou, Munehiro Matusi, Junicho Abe, Kiyohiko Itokawa, Fumihiro Yamashita (NTT) SAT2021-58
Among the several uses of unmanned aerial vehicles (UAV), wireless relay systems for high altitudes using fixed-wing UAV... [more] SAT2021-58
pp.31-38
SAT, SANE
(Joint)
2022-02-24
16:40
Online Online Spectrum division technique of burst signal for satellite communications
Fumihiro Yamashita, Junichi Abe (NTT) SAT2021-60
 [more] SAT2021-60
pp.45-50
SAT 2021-10-08
08:30
Online Online R&D for IOWN space integrated computing network
Fumihiro Yamashita, Satoshi Ozeki, Shigehiro Hori (NTT) SAT2021-47
 [more] SAT2021-47
pp.23-27
RCS, SAT
(Joint)
2021-08-26
14:40
Online Online [Special Talk] R&D on IOWN Space Sensing and/or Radio Access Networks
Fumihiro Yamashita (NTT) SAT2021-29 RCS2021-104
(To be available after the conference date) [more] SAT2021-29 RCS2021-104
pp.8-13(SAT), pp.26-31(RCS)
AP, SANE, SAT
(Joint)
2021-07-30
09:50
Online Online A study on improving the rainfall unavailability rate in the islands for Ku band disaster-relief satellite communications systems
Koichi Harada, Masaki Shima, Hiroki Shibayama, Fumihiro Yamashita (NTT) SAT2021-24
 [more] SAT2021-24
pp.24-29
CAS, CS 2021-03-01
14:00
Online Online [Special Invited Talk] R&D on satellite communications for IoT/6G communications
Fumihiro Yamashita (NTT) CAS2020-74 CS2020-81
 [more] CAS2020-74 CS2020-81
pp.11-16
SANE, SAT
(Joint)
2021-02-19
10:50
Online Online Capacity evaluation for each LPWA terminal in 920 MHz band IoT platform via LEO satellite
Kazumitsu Sakamoto, Tomoya Kageyama, Kento Yoshizawa, Yosuke Fujino, Yasuyoshi Kojima, Kiyohiko Itokawa, Fumihiro Yamashita (NTT) SAT2020-35
 [more] SAT2020-35
pp.35-40
SANE, SAT
(Joint)
2021-02-19
11:15
Online Online [Invited Talk] LEO-MIMO transmission techniques using multiple satellites for capacity enhancement
Daisuke Goto, Fumihiro Yamashita, Kiyohiko Itokawa (NTT), Ryo Okema, Takaya Yamazato (Nagoya Univ.) SAT2020-36
 [more] SAT2020-36
p.41
SAT, RCS
(Joint)
2020-08-21
10:30
Online Online [Encouragement Talk] Doppler frequency estimation of Superimposed Control Signal of multiple satellites by Deep Learning in LEO-MIMO
Ryo Okema (Nagoya Univ.), Daisuke Goto (NTT), Takaya Yamazato (Nagoya Univ.), Fumihiro Yamashita, Kiyohiko Itokawa (NTT) SAT2020-19
This paper focuses on satellite MIMO (Multi-Input Multi-Output) technology to increase the capacity of Low Earth Orbit (... [more] SAT2020-19
pp.47-52
SAT 2019-10-10
13:30
Fukuoka JR HAKATA CITY {10F RoomA+B} A novel design of beam coverage and receiver antenna for high capacity LEO-MIMO system
Daisuke Goto, Fumihiro Yamashita, Kiyohiko Itokawa (NTT), Takaya Yamazato, Ryo Okema (Nagoya Univ.) SAT2019-49
This paper presents a multi-input and multi-output (MIMO) low earth orbit (LEO) satellite communication system. Our LEO-... [more] SAT2019-49
pp.1-6
SAT 2019-10-10
15:20
Fukuoka JR HAKATA CITY {10F RoomA+B} Development of highly maintainable and reliable RF transceiver for satellite base stations
Munehiro Matsui, Akira Matsushita, Fumihiro Yamashita (NTT) SAT2019-52
Maintainability and reliability is required for sustainable operation of satellite communication system. This paper pres... [more] SAT2019-52
pp.21-26
SAT 2019-10-11
14:45
Fukuoka JR HAKATA CITY {10F RoomA+B} Satellite Experiments on Direct Spectrum Division Transmissions over multiple satellite transponders
Fumihiro Yamashita, Daisuke Goto, Yasuyoshi Kojima, Hiroki Shibayama (NTT), Hiroyuki Kobashi, Daiki Haraguchi (JSAT) SAT2019-62
 [more] SAT2019-62
pp.109-114
RCS, SAT
(Joint)
2019-08-22
13:05
Aichi Nagoya University [Invited Lecture] Channel Capacity Analysis of LEO MIMO System Considering the Satellite Attitude
Chihaya Kato, Mitsuhiro Nakadai (JAXA), Daisuke Goto, Hiroki Shibayama, Fumihiro Yamashita (NTT) SAT2019-24 RCS2019-153
With the improving sensor capabilities of Earth observation satellites and the introduction of the constellation service... [more] SAT2019-24 RCS2019-153
pp.39-44
RCS, SAT
(Joint)
2019-08-23
11:00
Aichi Nagoya University [Encouragement Talk] PAPR Reduction Effect by Sub-Spectrum Rotation when Multiple Division in Direct Spectrum Division Transmission
Sumika Omata, Takatoshi Sugiyama (Kogakuin Univ.), Izumi Urata, Fumihiro Yamashita (NTT) SAT2019-35
 [more] SAT2019-35
pp.99-104
WBS, SAT
(Joint)
2019-05-15
16:05
Aichi MEIJO University (Tempaku campus) Detection of Two Superimposed LEO-MIMO's Control Signals by Deep Learning
Ryo Okema (Nagoya Univ.), Daisuke Goto (NTT), Takaya Yamazato (Nagoya Univ.), Fumihiro Yamashita, Hiroki Shibayama (NTT) SAT2019-3
 [more] SAT2019-3
pp.13-17
SANE, SAT
(Joint)
2019-02-13
10:00
Kagoshima Tanegashima Island A Study on PAPR Reduction by Sub-Spectrum Rotation in Direct Spectrum Division Transmission
Sumika Omata, Motoi Shirai, Takatoshi Sugiyama (Kogakuin Univ.), Izumi Urata, Fumihiro Yamashita (NTT) SAT2018-57
 [more] SAT2018-57
pp.1-6
SANE, SAT
(Joint)
2019-02-13
13:30
Kagoshima Tanegashima Island Analysis of the MIMO channel for LEO Satellites
Chihaya Kato, Mitsuhiro Nakadai (JAXA), Daisuke Goto, Daiki Shibayama, Fumihiro Yamashita (NTT) SAT2018-60
In the Low Earth Orbital (LEO) Satellites, transmission data rate of the satellite communication is rapidly increasing t... [more] SAT2018-60
pp.17-22
SAT 2018-10-12
15:10
Overseas KARI [Special Talk] Development of remote island/disaster-relief satellite communication systems
Fumihiro Yamashita, Hiroki Shibayama (NTT) SAT2018-50
 [more] SAT2018-50
pp.23-28
 Results 1 - 20 of 61  /  [Next]  
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