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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 09:25 |
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 |
| 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 |
| AP | 2022-12-15 14:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
A Study on Miniaturized Patch Antenna with Circular Polarization for Earth Sensing Platform via LEO Satellite Haruki Otomo, Takashi Hikage, Manabu Yamamoto (Hokkaido Univ.), Kazumitsu Sakamoto, Yosuke Fujino (NTT) AP2022-175 |
[more] | AP2022-175 pp.13-18 |
| 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 |
| AP, RCS (Joint) |
2019-11-22 14:15 |
Saga | Saga Univ. | Challenge to Mbps-class high-speed acoustic communication for wireless remote operation of underwater vehicles Yosuke Fujino, Hiroyuki Fukumoto, Marina Nakano, Toshimitsu Tsubaki, Kazumitsu Sakamoto (NTT) AP2019-137 RCS2019-232 |
[more] | AP2019-137 RCS2019-232 pp.169-174(AP), pp.163-168(RCS) |
| AP, RCS (Joint) |
2019-11-22 14:40 |
Saga | Saga Univ. | A study on spatio-temporal equalization for high speed underwater acoustic communications Hiroyuki Fukumoto, Yosuke Fujino, Marina Nakano, Toshimitsu Tsubaki, Kazumitsu Sakamoto (NTT) AP2019-138 RCS2019-233 |
[more] | AP2019-138 RCS2019-233 pp.175-180(AP), pp.169-174(RCS) |
| 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 |
| 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 |
| SIP, CAS, CS | 2010-03-02 10:50 |
Okinawa | Hotel Breeze Bay Marina, Miyakojima | An Adaptive Resource Allocation Method for OFDMA Systems Employing Pilotless Channel Tracking Techniques
-- Performance Evaluation in case with Adaptive Modulation -- Kazumitsu Sakamoto, Osamu Muta (Kyushu Univ.), Yoshihiko Akaiwa (Univ. of Electro-Commun.), Krishnamurthy Giridhar (Indian Inst. of Tech Madras), Hiroshi Furukawa (Kyushu Univ.) CAS2009-113 SIP2009-158 CS2009-108 |
In recent years, decision-directed channel tracking (DDCT) techniques have been investigated for OFDM systems in order t... [more] | CAS2009-113 SIP2009-158 CS2009-108 pp.203-208 |
| RCS, AN, MoNA, SR (Joint) |
2009-03-05 14:00 |
Kanagawa | YRP | An Adaptive Resource Allocation Method for OFDMA Systems Employing Pilotless Channel Tracking Techniques Kazumitsu Sakamoto, Osamu Muta, Yoshihiko Akaiwa (Kyushu Univ.), Krishnamurthy Giridhar (Indian Inst. of Tech Madras) RCS2008-243 |
OFDMA (Orthogonal frequency division multiple access) based systems have been considered as a candidate for future wirel... [more] | RCS2008-243 pp.185-190 |
| RCS, AN, MoNA, SR, WBS (Joint) |
2008-03-06 16:50 |
Kanagawa | YRP | A study on co-channel interference supression method for a mobile-WiMAX based system Ryoichi Shimizu, Kazumitsu Sakamoto, Osamu Muta, Yoshihiko Akaiwa (Kyushu Univ.) RCS2007-227 |
Recently, there has been increased attention to broadband wireless technologies such as mibile-WiMAX (Worldwide Interope... [more] | RCS2007-227 pp.245-250 |
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