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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) |
2024-03-14 10:45 |
Tokyo | The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
A Proposal of Millimeter-wave Digital Beam Forming Antenna for Transmit Using Optical Fiber Link with Band-Pass Delta Sigma Modulation Satoshi Tsukamoto, Tomoyuki Furuichi, Noriharu Suematsu (Tohoku Univ.)  SR2023-98 |
In order to reduce the size and cost of millimeter-wave distributed antenna systems for 5G terrestrial networks and sat-... [more] | SR2023-98 pp.52-56 |
| MW | 2024-02-29 10:55 |
Okayama | Okayama Prefectural University (Primary: On-site, Secondary: Online) |
A Study of Digital Modulation Computation Bit Count and 1- bit BP Delta Delta-Sigma Modulation OSR for 40 -GHz Band Direct Digital RF ModulatoModulator Kouki Nakamura, Satoshi Tsukamoto, Junhao Zhang, Yuki Fujiya, Tomoyuki Furuichi, Noriharu Suematsu (Tohoku Univ.) MW2023-176 |
For future Low Earth Orbit (LEO) constellation satellite communication system, a development millimeter-wave digital bea... [more] | MW2023-176 pp.9-14 |
| SAT, SANE (Joint) |
2024-02-08 10:50 |
Kagoshima | AmaHome PLAZA (Amami City Shimin Koryu Center) (Primary: On-site, Secondary: Online) |
Basic study of Q/V-band on-board DBF antenna subsystem for LEO constellation Noriharu Suematsu, Tomoyuki Furuichi, Satoshi Tsukamoto (Tohoku Univ.) SAT2023-62 |
For future Japanese Low Earth Orbit (LEO) constellation satellite communication, explore of new frequency band (Q/V-band... [more] | SAT2023-62 pp.18-22 |
| MW, EMCJ, EST, IEE-EMC [detail] | 2023-10-20 09:00 |
Yamagata | Yamagata University (Primary: On-site, Secondary: Online) |
Design of Required Bit Count and 1 1-bit BP Delta Delta-Sigma Modulation OSR for 40 -GHz Band DBF Direct Digital RF Transmitter Kouki Nakamura, Satoshi Tsukamoto, Junhao Zhang, Tomoyuki Furuichi, Noriharu Suematsu (Tohoku Univ.) EMCJ2023-56 MW2023-110 EST2023-83 |
For future Low Earth Orbit (LEO) constellation satellite communication system, a development millimeter-wave digital bea... [more] | EMCJ2023-56 MW2023-110 EST2023-83 pp.107-112 |
| RCS | 2022-06-16 15:20 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Primary: On-site, Secondary: Online) |
A study on LLR Synthesis Method for Beam-Domain Local LMMSE Detection in mmWave Large MIMO Takumi Yoshida, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) RCS2022-51 |
As a low-complexity multi-user detector for uplink millimeter-wave (mmWave) large multi-user MIMO (Multi-Input Multi-Out... [more] | RCS2022-51 pp.162-167 |
| RCS, SR, SRW (Joint) |
2022-03-03 10:20 |
Online | Online | Deployment of mmWave Beyond 5G Testbed and high-precision propagation measurement system including relay stations Keishi Tokugawa, Kazuki Maruta, Keiichi Kubota, Kei Sakaguchi (Tokyo Tech), Jin Nakazato, Mitsuhiro Kuchitsu, Soh Masuko (RMI) RCS2021-272 |
In the 5th generation mobile communication (5G), which is now in service in many countries around the world, higher spee... [more] | RCS2021-272 pp.114-119 |
| US | 2022-02-24 13:55 |
Online | Online | Method of suppressing grating lobes in digital beam forming using threshold processing Tomonori Kimura, Yusuke Tsukamoto, Shinji Akimoto (MELCO) US2021-70 |
A method of suppressing grating lobes generated in digital beam forming by processing with a time domain is shown. A de... [more] | US2021-70 pp.6-9 |
| SR | 2022-01-24 13:30 |
Online | Online | [Invited Talk]
10GbE fiber transmission 7.5GHz-band DBF using 1-bit direct digital RF transmitter Noriharu Suematsu, Ryo Tamura, Mizuki Motoyoshi, Suguru Kameda (Tohoku Univ) SR2021-61 |
In DBF system, large number of element antennas should have each transceivers. The transceiver can be separated to an ou... [more] | SR2021-61 pp.12-16 |
| RCS | 2021-06-24 10:10 |
Online | Online | A Study on Low-Complexity Large MIMO Detection Based on Beam-Domain Local LMMSE Filters Takumi Yoshida, Daichi Shirase, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) RCS2021-50 |
In large multi-input multi-output (MIMO) systems, linear minimum mean square error (LMMSE) filters are often utilized as... [more] | RCS2021-50 pp.127-132 |
| RCS, SR, SRW (Joint) |
2021-03-05 10:30 |
Online | Online | Performance Evaluation of Base Station Cooperation Technologies in Millimeter-Wave Bands at Variable Base Station Deployments under High-Mobility Environments Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2020-249 |
Commercial services of 5th generation mobile communication system (5G) are expanding. In 5G, Massive MIMO -based beamfor... [more] | RCS2020-249 pp.207-211 |
| NS, RCS (Joint) |
2020-12-18 13:50 |
Online | Online | [Invited Lecture]
A Study on Higher-Order Large MIMO Detection via Concatenated Beam- and Antenna- Domain Layered BP Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) NS2020-102 RCS2020-149 |
In large multi-user multi-input multi-output systems, the computational cost and circuit scale on the base station (BS) ... [more] | NS2020-102 RCS2020-149 pp.79-84 |
| SAT, RCS (Joint) |
2020-08-21 11:20 |
Online | Online | [Encouragement Talk]
A Study on Dual Control of Transmit Power and Beam Directivity for Flexible Resource Allocation in HTS Communication System Masaki Takahashi, Yuichi Kawamoto, Nei Kato (Tohoku Univ.) SAT2020-21 |
With the diversification of communication applications in the wireless communication environment, high-throughput satell... [more] | SAT2020-21 pp.59-64 |
| RCS, SR, SRW (Joint) |
2019-03-07 12:25 |
Kanagawa | YRP | [Technology Exhibit]
Low-SHF-Band Massive MIMO Active Antenna System for Capacity Enhancement in 5G Yasushi Maruta, Mochizuki Takuji (NEC) RCS2018-310 SR2018-131 SRW2018-61 |
To achieve capacity enhancement and low power consumption, Massive MIMO has drawn attention as a key technology. Our res... [more] | RCS2018-310 SR2018-131 SRW2018-61 p.149(RCS), p.61(SR), p.29(SRW) |
| RCS, SR, SRW (Joint) |
2019-03-08 15:00 |
Kanagawa | YRP | Research and Development of Low-SHF-Band Massive Element Antennas Technologies for 5G Yasushi Maruta, Jun Shikida, Naoto Ishii (NEC), Tatsuki Okuyama, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2018-329 |
This paper describes our activities related to massive multi input and multi output (MIMO) for use in 5G radio access ne... [more] | RCS2018-329 pp.243-248 |
| RCS, SR, SRW (Joint) |
2019-03-08 15:40 |
Kanagawa | YRP | Performance Evaluation in the Outdoor Mobile Environment with Low-SHF-Band Massive Element Antennas for 5G Daisuke Nose, Tomohiro Kikuma, Yasushi Maruta (NEC), Tatsuki Okuyama, Kazushi Muraoka, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2018-330 |
We pay attention to the technology of Low- Super High Frequency (SHF) -Band Massive Multiple-Input Multiple-Output (MIM... [more] | RCS2018-330 pp.249-254 |
| SANE, SAT (Joint) |
2019-02-13 10:50 |
Kagoshima | Tanegashima Island | Layover Suppression Method with Single Pass PiSAR-X2 data Yumiko Katayama, Kei Suwa (MELCO) SANE2018-119 |
Layover is a ubiquitous phenomenon in Synthetic Aperture Radar (SAR) images and arises when different off-nadir angle re... [more] | SANE2018-119 pp.51-54 |
| RCS, AP (Joint) |
2018-11-22 15:50 |
Okinawa | Okinawa Industry Support Center | Performance Evaluation of Low-SHF-Band Digital Beamforming in High-Mobility Experimental Trial Tatsuki Okuyama, Kazushi Muraoka (NTT DOCOMO), Daisuke Nose, Tomohiro Kikuma, Yasushi Maruta (NEC), Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT DOCOMO) RCS2018-215 |
The fifth-generation (5G) mobile communication system utilizes Massive MIMO using many number of antenna elements in hig... [more] | RCS2018-215 pp.211-216 |
| SR | 2018-10-31 14:35 |
Overseas | Mandarin Hotel, Bangkok, Thailand | [Invited Talk]
Direct digital RF transceiver technology for high-SHF fully digital Massive MIMO Noriharu Suematsu, Mizuki Motoyoshi, Suguru Kameda (Tohoku Univ.) SR2018-96 |
Digital RF technology has been developed and applied to below 6GHz wireless applications. By replacing IC die consumptiv... [more] | SR2018-96 pp.103-107 |
| RCS | 2018-10-18 15:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | [Invited Lecture]
Indoor DL MU-MIMO Characteristics with 5G Low SHF band Massive MIMO Antenna Yasushi Maruta, Daisuke Nose, Toshihiro Hayata, Yi Jiang, Tomohiro Kikuma, Kenichiro Yamazaki, Toshifumi Sato (NEC), Tatsuki Okuyama, Kazushi Muraoka, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2018-162 |
To achieve capacity enhancement and low power consumption for 5G, Massive multi input and multi output (MIMO) has drawn ... [more] | RCS2018-162 p.67 |
| SAT, RCS (Joint) |
2018-08-09 17:10 |
Iwate | Iwate University | [Special Talk]
Digital RF Technology for On-Borad Transceivers in Next Generation High Throughput Satellite (HTS) Noriharu Suematsu (Tohoku Univ.) SAT2018-38 RCS2018-141 |
Digital RF technology has been developed and applied to below 6GHz wireless applications. By replacing the IC die consum... [more] | SAT2018-38 RCS2018-141 pp.49-54(SAT), pp.51-56(RCS) |
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