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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
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Committee Date Time Place Paper Title / Authors Abstract Paper #
MIKA
(3rd)
2023-10-10
15:35
Okinawa Okinawa Jichikaikan
(Primary: On-site, Secondary: Online)
[Poster Presentation] Study of wireless access technique using multiple terminal cooperation
Tomoya Kageyama, Takayuki Yamada, Riichi Kudo (NTT), Yuya Aoki, Yoshifumi Morihiro (NTT DOCOMO)
With increases in demand for mobile traffic, high-frequency bands such as millimeter waves (mmWave) are being utilized. ... [more]
RCS, SAT
(Joint)
2023-09-01
14:30
Nagano Naganoken Nokyo Building, and online
(Primary: On-site, Secondary: Online)
5G Experimental Trial Using Autonomous Mobile Robots at a Manufacturing Site
Atsuya Nakamura, Satoshi Suyama, Takayuki Yamada (NTT DOCOMO), Shinji Kobayashi, Hiroaki Yamada (OMRON), Goro Ikeda (Nokia) RCS2023-127
The 5th generation mobile communication system has already been commercially introduced worldwide, and commercial servic... [more] RCS2023-127
pp.131-136
AP, SANE, SAT
(Joint)
2023-07-14
16:50
Hokkaido The Citizen Activity Center
(Primary: On-site, Secondary: Online)
[Invited Lecture] 6G Simulator using Real Environment Model based on Point Cloud Data
Koshiro Kitao, Satoshi Suyama, Mitsuki Nakamura, Takahiro Tomie, Kiichi Tateishi, Takayuki Yamada (NTT DOCOMO) AP2023-65
 [more] AP2023-65
pp.187-191
RCS 2023-06-16
09:40
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
Considerations on Self-Interference Canceller using DMRS in Full-Duplex Mobile Communications
Takumi Yasaka (Kogakuin Univ.), Takayuki Yamada, Satoshi Suyama (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2023-66
Full-duplex mobile communications have been discussed as one of the duplex technologies to increase the spectral efficie... [more] RCS2023-66
pp.224-228
RCS 2023-06-16
16:00
Hokkaido Hokkaido University, and online
(Primary: On-site, Secondary: Online)
28 GHz-Band Experimental Trial Using Multiple Transmissive Metasurfaces and Beamforming
Kenta Goto, Satoshi Suyama, Takayuki Yamada (DOCOMO), Keisuke Arai, Osamu Kagaya (AGC) RCS2023-78
Toward 5G Evolution & 6G, “New Radio Network Topology (NRNT)” which is distributed in the spatial domain is considered t... [more] RCS2023-78
pp.294-299
RCS, SR, SRW
(Joint)
2023-03-01
14:50
Tokyo Tokyo Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
Transmission performance improvement of terminal-collaborated MIMO reception based on subband-based terminal selection
Ryosuke Kanda, Hidekazu Murata (Yamaguchi Univ.), Satoshi Suyama, Takayuki Yamada (NTT DOCOMO, INC.) RCS2022-259
In terminal-collaborated MIMO (Multiple-Input Multiple-Output) reception, where reception is performed collaboratively w... [more] RCS2022-259
pp.72-76
RCS, SR, SRW
(Joint)
2023-03-01
16:40
Tokyo Tokyo Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
A Study of Cross-Link Interference Mitigation with Cell Clustering on Dynamic TDD system
Kiichi Tateishi, Takayuki Yamada, Satoshi Suyama (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-263
 [more] RCS2022-263
pp.94-99
RCS 2022-10-28
12:10
Ehime Ehime University, and online
(Primary: On-site, Secondary: Online)
Concept and Issues of New Radio Network Topology for 5G Evolution & 6G
Masashi Iwabuchi (NTT), Satoshi Suyama (NTT DOCOMO), Takuto Arai (NTT), Mitsuki Nakamura, Kenta Goto (NTT DOCOMO), Riku Ohmiya, Daisei Uchida (NTT), Takayuki Yamada (NTT DOCOMO), Tomoaki Ogawa (NTT) RCS2022-148
 [more] RCS2022-148
pp.101-106
ED, THz [detail] 2019-12-23
15:40
Miyagi   [Invited Talk] Orbital Angular Momentum Multiplexing Technology -- High Capacity Wireless Communication and Device Perspectives --
Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Tomoki Semoto, Takayuki Yamada, Jun Mashino, Takashi Shimizu (NTT) ED2019-81
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate ... [more] ED2019-81
p.21
RCS, SAT
(Joint)
2019-08-22
13:30
Aichi Nagoya University [Invited Lecture] Orbital Angular Momentum Multiplexing Technology -- High Capacity Point-to-Point Wireless Communication Perspective --
Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Takayuki Yamada, Takashi Shimizu (NTT) SAT2019-25 RCS2019-154
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate ... [more] SAT2019-25 RCS2019-154
p.45
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-11
10:40
Osaka I-Site Nanba(Osaka) [Poster Presentation] An Experiment of 200 Gbps, 21 Streams Wireless Transmission Using OAM-MIMO Multiplexing with Polarization in 28 GHz Band
Yasunori Yagi, Hirofumi Sasaki, Takayuki Yamada, Doohwan Lee, Takashi Shimizu (NTT) RCC2019-30 NS2019-66 RCS2019-123 SR2019-42 SeMI2019-39
The orbital angular momentum (OAM) multiplexing has been drawing much attention in wireless transmission systems. The OA... [more] RCC2019-30 NS2019-66 RCS2019-123 SR2019-42 SeMI2019-39
pp.99-100(RCC), pp.125-126(NS), pp.121-122(RCS), pp.131-132(SR), pp.113-114(SeMI)
SR 2019-05-31
10:30
Tokyo Tokyo Big Sight [Invited Talk] Toward terabit-class wireless transmission: OAM wireless multiplexing technology
Doohwan Lee, Hirofumi Sasaki, Yasunori Yagi, Takayuki Yamada, Takashi Shimizu (NTT) SR2019-11
 [more] SR2019-11
p.69
RCS, SR, SRW
(Joint)
2019-03-08
11:20
Kanagawa YRP [Invited Lecture] Experimental Investigation of OAM-MIMO multiplexing technique for ultra high capacity wireless transmission
Hirofumi Sasaki, Yasunori Yagi, Yakana Kaho, Takayuki Yamada, Doohwan Lee, Takashi Shimizu (NTT) SR2018-140
Recently, communication systems using beams that carry orbital angular momentum (OAM) have gathered much attention for u... [more] SR2018-140
pp.111-116
CQ 2016-05-24
10:50
Fukuoka Kyushu University Model Based Radio Environment Recognition and Prediction Techniques for Quality Management Wireless Communication System in Spectrum Sharing Scenarios
Hirofumi Sasaki, Takayuki Yamada, Doohwan Lee, Tadao Nakagawa (NTT) CQ2016-14
 [more] CQ2016-14
pp.9-14
RCS, CCS, SR, SRW
(Joint)
2016-03-04
14:30
Tokyo Tokyo Institute of Technology [Invited Lecture] Broadband Spectrum Sensing Platform based on Received Waveform Cross-correlation using Distributed Sensors
Doohwan Lee, Takayuki Yamada, Hiroyuki Shiba, Yo Yamaguchi, Takana Kaho, Tadao Nakagawa, Kazuhiro Uehara (NTT) SR2015-117
Rapid increase in mobile traffic due to the spread of smartphones will cause the frequency shortage. Frequency range fro... [more] SR2015-117
p.171
SRW 2015-10-28
14:15
Tokyo Kikai-Sinko-Kaikan Bldg. (Tokyo) A Statistical Radio Environment Recognition Technique Based on State Transition Model in Heterogeneous Wireless Network
Hirofumi Sasaki, Takayuki Yamada, Doohwan Lee, Tadao Nakagawa (NTT) SRW2015-52
 [more] SRW2015-52
pp.7-12
SR 2015-05-28
15:15
Hyogo Akashi-Sangyou-Koryu-Center Rario Environment Statistical Recognition Based on State Transition Model with Considering of Intersystem Interference in Spectrum Sharing Scenarios
Hirofumi Sasaki, Takayuki Yamada, Jun Mashino, Takatoshi Sugiyama (NTT) SR2015-6
In heterogeneous wireless networks with spectrum sharing, radio wave collisions often occur randomly by not only intra-s... [more] SR2015-6
pp.31-38
SR 2015-05-29
13:25
Hyogo Akashi-Sangyou-Koryu-Center Performance Evaluation of Waveform Cross-Correlation Based Cooperative Sensing under Multipath Fading Environments
Takayuki Yamada, Doohwan Lee, Yo Yamaguchi, Tadao Nakagawa (NTT) SR2015-12
 [more] SR2015-12
pp.73-78
SR 2014-10-31
13:00
Overseas I2R, Singapore [Technology Exhibit] Broadband Spectrum Sensing Platform Based on Received Waveform Cross-correlation using Distributed Sensors
Takayuki Yamada, Doohwan Lee, Hiroyuki Shiba, Yo Yamaguchi, Takana Kaho, Tadao Nakagawa, Kazuhiro Uehara (NTT) SR2014-88
Rapid increase in mobile traffic due to the spread of smartphones will cause the frequency shortage. Frequency range fro... [more] SR2014-88
pp.169-170
NS, IN
(Joint)
2014-03-06
09:30
Miyazaki Miyazaki Seagia A study on a broadband spectrum sensing system
Hiroyuki Shiba, Yo Yamaguchi, Takayuki Yamada, Takana Kaho, Tadao Nakagawa (NTT) IN2013-152
 [more] IN2013-152
pp.53-58
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