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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS | 2024-06-19 15:25 |
Okinawa | (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Beam Selection Method Based on Horizontal-and-Vertical Angle-Domain Adaptive Beam Grouping for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink Azusa Matsumoto, Nobuhide Nonaka, Takanori Hara, Kenichi Higuchi (Tokyo Univ. of Science)  RCS2024-44 |
This paper investigates a beam selection method for the downlink massive multiple-input multiple-output (mMIMO) analog b... [more] | RCS2024-44 pp.99-105 |
| RCS | 2024-04-26 10:20 |
Hiroshima | (Hiroshima, Online) (Primary: On-site, Secondary: Online) |
Extended Angle-Domain Beam Grouping-Based Beam Selection for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink Nobuhide Nonaka, Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-8 |
In this paper, we consider an appropriate beam selection method in downlink massive multiple-input multiple-output (mMIM... [more] | RCS2024-8 pp.38-45 |
| AP, RCS (Joint) |
2023-11-15 10:25 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Kumamoto, Online) (Primary: On-site, Secondary: Online) |
Beam Selection Based on Angle-Domain Beam Grouping for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink Nobuhide Nonaka, Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-152 |
In this paper, we introduce non-orthogonal multiple access (NOMA) into the massive multiple-input multiple-output (MIMO)... [more] | RCS2023-152 pp.7-12 |
| RCS | 2022-06-15 13:30 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Okinawa, Online) (Primary: On-site, Secondary: Online) |
HARQ Using Hierarchical Tree-Structured Random Access Channel Identifiers and Random Retransmission Time Back-Off in NOMA Based Random Access Katsuya Yanai, Takanori Hara (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-32 |
[more] | RCS2022-32 pp.49-54 |
| RCS | 2022-06-15 14:05 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Peak Cancellation Signal Generation Considering Variance in Signal Power Among Transmitter Antennas in PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals Jun Saito (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-34 |
[more] | RCS2022-34 pp.61-66 |
| RCS | 2022-06-15 14:15 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Okinawa, Online) (Primary: On-site, Secondary: Online) |
PAPR Reduction Method Using Null Space in MIMO Channel for MIMO-OFDM Signals at Multiple-Antenna AF Relay Station Based on Signal Processing at Base Station Asuka Kakehashi (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-35 |
[more] | RCS2022-35 pp.67-72 |
| RCS | 2022-06-15 14:25 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Investigations on TRP Clustering Method in Downlink Cell-Free MIMO Using Layered Partially Non-orthogonal ZF-Based Beamforming Daisuke Ishii, Takanori Hara (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-36 |
[more] | RCS2022-36 pp.73-78 |
| RCS | 2022-06-15 14:55 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Okinawa, Online) (Primary: On-site, Secondary: Online) |
Activation Control of Base Stations Based on Distributed DQN for Heterogeneous Networks Daiki Kato (Tokyo Univ. of Science), Yuto Muroki, Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2022-39 |
[more] | RCS2022-39 pp.91-96 |
| RCS, SR, SRW (Joint) |
2022-03-03 10:45 |
Online | Online (Online) | Radio Video Transmission Experiments Using Shinkansen Test Train Running at 360 km/h toward 5G Evolution Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Hama yuto, Daisuke Kitayama, Takahiro Asai (NTT DOCOMO), Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR East) RCS2021-273 |
[more] | RCS2021-273 pp.120-125 |
| RCS, NS (Joint) |
2021-12-16 13:25 |
Nara | Nara-ken Bunka Kaikan and Online (Nara, Online) (Primary: On-site, Secondary: Online) |
Performance Evaluations of Transmitter and Receiver Hybrid Beamforming in Massive MIMO at 100 GHz-band Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Takahiro Asai (NTT DOCOMO) RCS2021-179 |
[more] | RCS2021-179 pp.24-29 |
| AP, RCS (Joint) |
2021-11-12 09:30 |
Nagasaki | NBC-Bekkan (Nagasaki) (Nagasaki, Online) (Primary: On-site, Secondary: Online) |
Experimental Trials Using Shinkansen Test Train Running at 360 km/h toward 5G Evolution Nobuhide Nonaka, Satoshi Suyama, Tatsuki Okuyama, Yuto Hama, Daisuke Kitayama, Takahiro Asai (NTT DOCOMO), Shoji Itoh (Ericsson Japan), Anders Carlsson, Johan Furuskog, Magnus Wikstrom, Qiang Zhang (Ericsson), Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR EAST) RCS2021-166 |
[more] | RCS2021-166 pp.118-123 |
| RCS | 2021-10-22 11:15 |
Online | Online (Online) | Performance Evaluation of Two Directions in Base Station Antennas by 28 GHz-Band Outdoor Experiments of Base Station Cooperation Technology in High-Mobility Environments Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-134 |
[more] | RCS2021-134 pp.82-87 |
| RCS | 2021-10-22 15:00 |
Online | Online (Online) | [Poster Presentation]
NTT DOCOMO's Activities for 5G Evolution & 6G Satoshi Suyama, Tatsuki Okuyama, Nobuhide Nonakaka, Takahiro Asai (NTT DOCOMO) RCS2021-142 |
[more] | RCS2021-142 p.126 |
| RCS | 2021-06-23 13:00 |
Online | Online (Online) | Efficient HARQ Method Using Hierarchically Structured Physical Channel Identifiers in NOMA-based Random Access for Multi-Packet Reception Megumi Asada (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2021-36 |
This paper proposes an efficient hybrid automatic repeat request (HARQ) method achieving both the packet combining and r... [more] | RCS2021-36 pp.43-48 |
| RCS | 2021-06-23 13:10 |
Online | Online (Online) | Investigation of Transmitter Filtering Method for Random Access with Channel Identifier Linked Receiver Beamforming Shogo Uchida (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2021-37 |
This paper investigates a transmitter filtering (TF) method for random access using physical channel identifier (PCID)-l... [more] | RCS2021-37 pp.49-55 |
| RCS | 2021-06-23 13:20 |
Online | Online (Online) | Investigation on Complexity Reduction in Peak Cancellation Signal-Based PAPR Reduction Method Using Null Space in MIMO Channel Kenta Hosoi (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2021-38 |
In this paper, we propose an algorithm to further reduce the computational complexity of the peak-to-average power ratio... [more] | RCS2021-38 pp.56-61 |
| RCS | 2021-06-23 13:30 |
Online | Online (Online) | Investigation of PAPR Reduction Using Null Space in MIMO Channel for MIMO-OFDM Signals in Multiple-Antenna AF Relay Transmission Yuki Sekiguchi (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2021-39 |
In the 5th generation mobile communication system and beyond, the importance of relay transmission increases in order to... [more] | RCS2021-39 pp.62-67 |
| RCS | 2021-06-25 14:35 |
Online | Online (Online) | Outdoor Experimental Trials of 28 GHz-Band Base Station Cooperation Technologies in High-Mobility Environments with Mobile Stations Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-74 |
[more] | RCS2021-74 pp.261-266 |
| RCS, IN, NV (Joint) |
2021-05-27 16:00 |
Online | Online (Online) | 6G System-Level Simulators in 100 GHz Band Tatsuki Okuyama, Satoshi Suyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2021-22 |
[more] | RCS2021-22 pp.35-40 |
| RCS, SR, SRW (Joint) |
2021-03-05 10:30 |
Online | 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 |
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