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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, SR, SRW (Joint) |
2024-03-13 17:05 |
Tokyo | The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
CRDSA/IRSA Based Adaptive Transmission Control Considering Available Channels Difference among Terminals in Satellite IoT Systems Kansuke Kumazawa, Hiraku Okada (Nagoya Univ.), Koyo Tategami, Daisuke Goto, Munehiro Matsui, Kiyohiko Itokawa, Fumihiro Yamashita (NTT), Masaaki Katayama (Nagoya Univ.)  RCS2023-268 |
In a satellite IoT system using a 920-MHz band LPWA, each terminal's available channel differs, and the number of packet... [more] | RCS2023-268 pp.83-88 |
| SAT, KOSST | 2023-10-11 11:15 |
Overseas | Central Hotel Marianne（Korea, Busan） (Primary: On-site, Secondary: Online) |
An Advanced Proposal for the On-orbit Practical Experiment of LEO Satellite MIMO for 920MHz band IoT Sensing Platform Kiyohiko Itokawa, Daisuke Goto, Yasuyoshi Kojima, Kouhei Suzaki, Kazumitsu Sakamoto, Yousuke Fujino, Fumihiro Yamashita (NTT), Chihaya Kato, Mitsuhiro Nakadai, Masanobu Yajima (JAXA) SAT2023-55 |
[more] | SAT2023-55 pp.39-44 |
| RCS, SAT (Joint) |
2023-08-31 09:00 |
Nagano | Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
CRDSA/IRSA Based Transmission Control Considering Available Channels Difference and Fairness among Terminals in Satellite IoT Systems Kansuke Kumazawa, Hiraku Okada (Nagoya Univ.), Munehiro Matsui, Koyo Tategami, Daisuke Goto, Kiyohiko Itokawa, Fumihiro Yamashita (NTT), Masaaki Katayama (Nagoya Univ.) SAT2023-33 |
(To be available after the conference date) [more] | SAT2023-33 pp.1-6 |
| RCS, SAT (Joint) |
2023-08-31 09:25 |
Nagano | Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
Capacity Evaluation for IoT Terminals in LEO Satellite IoT Platform Using Receiver Beamforming with Doppler Rate Compensation Kazumitsu Sakamoto, Masaki Takahashi, Kouhei Suzaki, Yosuke Fujino, Kenji Suzuki, Yasuyoshi Kojima, Kiyohiko Itokawa, Fumihiro Yamashita (NTT) SAT2023-34 |
[more] | SAT2023-34 pp.7-12 |
| AP, SANE, SAT (Joint) |
2023-07-14 13:40 |
Hokkaido | The Citizen Activity Center (Primary: On-site, Secondary: Online) |
Subarray Configuration Decision Method Based on Transmission Weights for Variable Subarray Beamforming in LEO-MIMO Koyo Tategami, Daisuke Goto, Kiyohiko Itokawa, Fumihiro Yamashita (NTT) AP2023-59 SANE2023-31 SAT2023-30 |
[more] | AP2023-59 SANE2023-31 SAT2023-30 pp.156-161(AP), pp.54-59(SANE), pp.112-117(SAT) |
| MICT, WBS, RCC, SAT (Joint) [detail] |
2023-05-26 09:50 |
Tokyo | TOKYO BIG SIGHT (Primary: On-site, Secondary: Online) |
LEO-MIMO Antenna Configuration of Satellite/Gateway for High Channel Capacity Daisuke Goto, Koyo Tategami, Kiyohiko Itokawa, Fumihiro Yamashita (NTT) SAT2023-6 MICT2023-6 |
In this paper, we propose low earth orbit satellite (LEO) communications using Muti-input / Multi-output (MIMO), called ... [more] | SAT2023-6 MICT2023-6 pp.26-31 |
| SANE, SAT (Joint) |
2023-03-02 15:50 |
Okinawa | (Primary: On-site, Secondary: Online) |
Study on Receiver Beamforming with Doppler Rate Compensation for IoT Platform via LEO Satellite Kazumitsu Sakamoto, Kouhei Suzaki, Yohei Katayama, Yosuke Fujino, Kenji Suzuki, Yasuyoshi Kojima, Kiyohiko Itokawa, Fumihiro Yamashita (NTT) SAT2022-64 |
[more] | SAT2022-64 pp.51-56 |
| SAT, KOSST | 2022-10-06 13:15 |
Fukuoka | (Primary: On-site, Secondary: Online) |
[Special Talk]
R&D on wireless technologies in NTT Lab. for space integrated computing network Fumihiro Yamashita, Junichi Abe, Kiyohiko Itokawa (NTT) SAT2022-44 |
[more] | SAT2022-44 pp.1-5 |
| 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 |
| 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 |
| 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 |
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