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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 36  /  [Next]  
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.)
 [more]
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
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)
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 2019-10-11
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
MIKA
(2nd)
2019-10-04
10:15
Hokkaido Hokkaido Univ. [Poster Presentation] Wireless System Planning Method Based on Wireless Environment and User Distribution
Toshiro Nakahira, Hirantha Abeysekera, Koichi Ishihara, Takatsune Moriyama, Daisuke Goto, Yasushi Takatori (NTT)
By using a wireless backhaul or a mesh network between access points and installing access points on drones or robots, i... [more]
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
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
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, RCS
(Joint)
2018-08-10
16:20
Iwate Iwate University Experimental Verification of dynamic carrier allocation using SC-FDMA in Autonomous Bandwidth Allocation FDMA
Daisuke Goto, Fumihiro Yamashita (NTT) SAT2018-45
Autonomous Bandwidth Allocation FDMA (ABA-FDMA) is proposed for dynamically sharing unused bandwidth of satellite transp... [more] SAT2018-45
pp.91-96
AI, JSAI-KBS, JSAI-DOCMAS, JSAI-SAI, IPSJ-ICS 2018-03-03
10:50
Hokkaido  
Daisuke Goto, Seiji Tsuchiya, Koichi Watanabe (Doshisya Univ.) AI2017-48
In order to realize the process targeting natural languages by computer, it is necessary to interpret ambiguous linguist... [more] AI2017-48
pp.31-36
SAT 2017-10-27
12:50
Okinawa Okinawa Cellular Telephone Company Frequency segment selection algorithm in autonomous bandwidth allocation FDMA for high frequency efficient satellite systems
Daisuke Goto, Junichi Abe, Fumihiro Yamashita (NTT) SAT2017-52
Frequency segment selection algorithm in autonomous bandwidth allocation FDMA for high frequency efficient satellite sys... [more] SAT2017-52
pp.95-100
SAT 2017-10-27
14:15
Okinawa Okinawa Cellular Telephone Company Direct Spectrum Division Transmission adapter for Cognitive multiple system overlay on satellite transponders
Fumihiro Yamashita, Junichi Abe, Daisuke Goto, Koichi Harada (NTT) SAT2017-54
 [more] SAT2017-54
pp.115-120
RCS, SAT
(Joint)
2017-08-18
14:55
Niigata Niigata Univ. [Encouragement Talk] Capacity evaluation under channel estimation using unique word in multi-satellite/multi-beam MIMO systems
Daisuke Goto, Fumihiro Yamashita (NTT) SAT2017-34
We have been studying the new multi-satellite/multi-beam system in single frequency reuse using MIMO (Multi-Input/Multi-... [more] SAT2017-34
pp.69-74
AP, SAT, SANE
(Joint)
2017-07-28
15:40
Aichi Nagoya Institute of Technology Development of Satellite Network Common Unit of High-Efficiency Satellite Communication System for Disaster Restoration
Hisayoshi Kano, Hiroki Shibayama, Izumi Urata, Keishin Yano, Junichi Abe, Akira Matsushita, Daisuke Goto, Katsuhiko Yamanaka, Yoshinori Suzuki, Yuichi Sagawa, Naoki Kita (NTT) SAT2017-18
NTT Access Network Service Systems Laboratories have been working on the research and development of the new satellite c... [more] SAT2017-18
pp.63-68
SAT 2016-10-14
11:30
Overseas Incheon Univ. Songdo R104, Auditorium & Performing Place Base station antenna systems configuration using distributed array antenna constructing technique
Yoshinori Suzuki, Kouhei Suzaki, Daisuke Goto, Katsuhiko Yamanaka, Fumihiro Yamashita, Naoki Kita (NTT) SAT2016-58
We have been studying a novel base station that uses Distributed Array Antenna (DAA) Technologies to improve EIRP and G/... [more] SAT2016-58
pp.85-90
 Results 1 - 20 of 36  /  [Next]  
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