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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] | 2023-07-20 14:25 |
Hokkaido | Muroran Institute of Technology (Primary: On-site, Secondary: Online) |
A Study on Optical Beamforming for High-Frequency Radio Ken Hiraga, Honoka Ito, Riichi Kudo (NTT)  EMT2023-31 MW2023-49 OPE2023-31 EST2023-31 MWPTHz2023-27 |
[more] | EMT2023-31 MW2023-49 OPE2023-31 EST2023-31 MWPTHz2023-27 pp.120-125 |
| EST, MW, EMT, OPE, MWPTHz, IEE-EMT [detail] | 2023-07-20 14:50 |
Hokkaido | Muroran Institute of Technology (Primary: On-site, Secondary: Online) |
Transmission experiment of wireless 2D beamforming by optical phase control Honoka Ito, Ken Hiraga, Riichi Kudo (NTT) EMT2023-32 MW2023-50 OPE2023-32 EST2023-32 MWPTHz2023-28 |
In the 6G wireless communication system, utilization of high-frequency bands, including the THz band, is being considere... [more] | EMT2023-32 MW2023-50 OPE2023-32 EST2023-32 MWPTHz2023-28 pp.126-130 |
| CS, CQ (Joint) |
2023-05-18 16:00 |
Kagawa | Rexxam Hall (Kagawa Kenmin Hall) (Primary: On-site, Secondary: Online) |
A study of wireless 2D beamforming by optical phase control Honoka Ito, Ken Hiraga, Riichi Kudo (NTT) CQ2023-3 |
In the 6G wireless communication system, utilization of high-frequency bands, including the THz band, is being considere... [more] | CQ2023-3 pp.13-17 |
| CPM, LQE, ED | 2019-11-22 10:00 |
Shizuoka | Shizuoka Univ. (Hamamatsu) | Experimental study on the antireflection nanotexture for organic photovoltaics Kenta Hiraga, Shigeru Kubota, Kensaku Kanomata, Bashir Ahmmad (Yamagata Univ.), Jun Mizuno (Waseda Univ.), Fumihiko Hirose (Yamagata Univ.) ED2019-48 CPM2019-67 LQE2019-91 |
Organic solar cells have attracted a lot of attention as the energy supply devices for near future, because they have su... [more] | ED2019-48 CPM2019-67 LQE2019-91 pp.65-68 |
| ED, LQE, CPM | 2018-11-29 15:15 |
Aichi | Nagoya Inst. tech. | Experiment and evaluation for the methods of nanoimprinting moth eye structure Kenta Hiraga, Shigeru Kubota, Kensaku Kanomata, Bashir Ahmmad, Fumihiko Hirose (Yamagata Univ.) ED2018-37 CPM2018-71 LQE2018-91 |
(To be available after the conference date) [more] | ED2018-37 CPM2018-71 LQE2018-91 pp.21-26 |
| CPM | 2018-03-02 11:45 |
Tokyo | Tokyo Univ. of Technol. | Evaluation of performance of organic solar cell using moth-eye structure Kenta Hiraga, Kensaku Kanomata, Bashir A. Arima, Shigeru Kubota, Fumihiko Hirose (Yamagata Univ.) CPM2017-135 |
[more] | CPM2017-135 pp.75-78 |
| SR | 2016-10-27 15:00 |
Osaka | Osaka Univ. Nakanoshima Center | [Technology Exhibit]
An Experimental Study of the Orbital Angular Momentum (OAM) Multiplexing Doohwan Lee, Hirofumi Sasaki, Hiroyuki Fukumoto, Ken Hiraga, Tadao Nakagawa, Hiroyuki Shiba (NTT) SR2016-56 |
Recently, wireless communication using Orbital Angular Momentum (OAM) has drawn much attention as an emerging candidate... [more] |
SR2016-56 pp.7-8 |
| SRW | 2016-06-13 15:00 |
Kanagawa | NICT Wireless Network Research Institute (NICT) | Performance Evaluation of an Overhead-Reduced Channel Estimation Sequences for mmWave Short-Range MIMO Doohwan Lee, Ken Hiraga, Kazumitsu Sakamoto, Tadao Nakagawa (NTT) SRW2016-30 |
A promising solution to the need for higher rates in wireless data transmission is millimeter-wave (mmWave) short-range ... [more] | SRW2016-30 pp.27-32 |
| SR, SRW (Joint) |
2016-05-16 14:30 |
Overseas | Hotel Lasaretti, Oulu, Finland | [Poster Presentation]
A Study of Channel Estimation Sequences Design for Millimeter-Wave Short-Range MIMO Wireless Communication Systems Doohwan Lee, Ken Hiraga, Kazumitsu Sakamoto, Tadao Nakagawa (NTT) SR2016-6 SRW2016-6 |
Recently wireless data transmission using millimeter-wave has drawn much attention due to its wider bandwidth. To fully ... [more] | SR2016-6 SRW2016-6 pp.21-22 |
| RCS, CCS, SR, SRW (Joint) |
2016-03-02 11:15 |
Tokyo | Tokyo Institute of Technology | An Overhead-Reducing Channel Estimation Sequences Design for Millimeter-Wave Short-Range MIMO Wireless Communication Systems Doohwan Lee, Ken Hiraga, Kazumitsu Sakamoto, Tadao Nakagawa (NTT) SRW2015-75 |
The number of necessary channel estimation sequences (CES) slots linearly increase as the number of transmission antenna... [more] | SRW2015-75 pp.29-34 |
| SRW | 2015-06-15 13:00 |
Kanagawa | Fujitsu | [Invited Lecture]
Research on a Millimeter-Wave Close Proximity High-Speed Data Transfer System Tadao Nakagawa, Hideki Toshinaga, Toshimitsu Tsubaki, Tomohiro Seki, Ken Hiraga, Kazumitsu Sakamoto, Masafumi Shimizu (NTT) SRW2015-2 |
[more] | SRW2015-2 pp.7-12 |
| AP | 2015-02-20 12:40 |
Hyogo | Chusho-kigyou center at Amagasaki-City | [Invited Lecture]
Proposal of fast weight generation method for hand jiggling compensation in short-range MIMO transmission Kazumitsu Sakamoto, Ken Hiraga, Maki Arai, Tomohiro Seki, Toshimitsu Tsubaki, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2014-203 |
In non-contact high speed data transfer applying short-range multiple-input multiple-output (SR-MIMO) transmission in mi... [more] | AP2014-203 pp.89-94 |
| MW | 2014-11-20 15:35 |
Nagasaki | Nagasaki Univ. | [Invited Lecture]
IEEE standardization trend of wireless access Yasushi Takatori, Ken Hiraga, Toshimitsu Tsubaki, Yasuhiko Inoue, Yusuke Asai, Masafumi Shimizu, Tadao Nakagawa, Masato Mizoguchi (NTT) MW2014-133 |
[more] | MW2014-133 pp.51-56 |
| SRW | 2014-10-27 15:15 |
Chiba | Chiba University | A study of ultra-high speed short-range transmission over 60-GHz band Ken Hiraga, Kazumitsu Sakamoto, Tomohiro Seki, Toshimitsu Tsubaki, Hideki Toshinaga, Tadao Nakagawa (NTT) SRW2014-33 |
(To be available after the conference date) [more] | SRW2014-33 pp.47-52 |
| AP, WPT (Joint) |
2014-10-17 10:10 |
Hokkaido | Hokkaido University, Clark Memorial Student Center | Experimental evaluation of broadband transmission performance and antenna displacement tolerance in short-range MIMO simple decoding Kazumitsu Sakamoto, Ken Hiraga, Maki Arai, Tomohiro Seki, Toshimitsu Tsubaki, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2014-121 |
We have proposed a simple decoding method for short-range multiple-input multiple-output (SR-MIMO) transmission that can... [more] | AP2014-121 pp.73-78 |
| AP, WPT (Joint) |
2014-10-17 14:45 |
Hokkaido | Hokkaido University, Clark Memorial Student Center | A study of spatial division transmission utilizing two-ray ground reflection model Ken Hiraga, Kazumitsu Sakamoto, Maki Arai, Tomohiro Seki, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2014-127 |
(To be available after the conference date) [more] | AP2014-127 pp.105-110 |
| RCS, AP (Joint) |
2013-11-21 11:25 |
Shimane | Matsue Terrsa | Study on Alignment Tolerance in Millimeter-Wave MIMO Transmission Using Orthogonal Directivities Maki Arai, Tomohiro Seki, Ken Hiraga, Kazumitsu Sakamoto, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2013-109 |
[more] | AP2013-109 pp.55-60 |
| AP | 2012-01-20 10:35 |
Fukuoka | Kyushu Inst. of Tech. | Simple decoding method for short range MIMO transmission Ryochi Kataoka, Kentaro Nishimori (Niigata Univ.), Ken Hiraga (NTT), Kentaro Takai (Niigata Univ.), Kazumitsu Sakamoto, Tomohiro Seki (NTT) AP2011-173 |
[more] | AP2011-173 pp.153-158 |
| AP, SAT (Joint) |
2011-07-14 11:05 |
Nagano | Fac. Eng., Shinshu Univ. | Basic study on antenna arrangement by genetic algorithm in short range MIMO transmission Ryochi Kataoka, Kentaro Nishimori (Niigata Univ.), Ken Hiraga, Tomohiro Seki (NTT), Hideo Makino (Niigata Univ.) AP2011-36 |
[more] | AP2011-36 pp.51-56 |
| AP | 2010-10-14 15:10 |
Iwate | Iwate Univ. | A Study of Short-range MIMO Transmission Using Dual Polarized Antenna Ken Hiraga (NTT), Kentaro Nishimori (Niigata Univ.), Tomohiro Seki, Kenjiro Nishikawa, Ichihiko Toyoda, Kazuhiro Uehara (NTT) AP2010-80 |
Recently, higher transmission speeds are expected for high definition images and video services. Multiple-input and mult... [more] | AP2010-80 pp.37-42 |
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