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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| CS | 2023-07-28 14:30 |
Tokyo | Hachijo-machi Chamber of Commerce and Industry | A Precoding Scheme to Suppress both Out-of-Band Emission and Peak Power of OFDM Signals using Trapezoidal Block Householder Reflector Hikaru Kawasaki, Takeshi Matsumura (NICT)  CS2023-57 |
The authors have proposed a trapezoidal block Householder reflector (TBHR) to represent a unitary matrix in orthonormali... [more] | CS2023-57 pp.157-162 |
| AP | 2023-05-11 14:55 |
Okinawa | Okinawa Gender Equality Center (Primary: On-site, Secondary: Online) |
Reflected and Diffracted Wave Power Calculation Method based on Wavelength and Object Size
-- Preliminary Investigation of Localized Parameter Tuning -- Azril Haniz, Hikaru Kawasaki (NICT), Genki Hosokawa, Takuro Urushibata (YAZAKI Corporation), Yasuyuki Yanagi (Yazaki Energy System Corporation), Tadahide Kunitachi (YAZAKI Corporation), Hirokazu Sawada, Takeshi Matsumura (NICT) AP2023-15 |
In order to reduce the errors of the simulated received power at sub-6 GHz frequencies due to the wavelength being large... [more] | AP2023-15 pp.37-42 |
| SR | 2023-05-12 17:10 |
Hokkaido | Center of lifelong learning Kiran (Higashi Muroran) (Primary: On-site, Secondary: Online) |
SDR-based 5G NR Evaluation Environment for Wireless Emulator and System Verification using Video Transmission Takeshi Matsumura, Hikaru Kawasaki, Kazuo Ibuka (NICT) SR2023-25 |
In Society 5.0, various services that integrate the real world with virtual spaces, such as CPS (Cyber-Physical Systems)... [more] | SR2023-25 pp.106-113 |
| SR | 2023-05-12 17:35 |
Hokkaido | Center of lifelong learning Kiran (Higashi Muroran) (Primary: On-site, Secondary: Online) |
Prototype Implementation and Fundamental Evaluation of OOBE Suppression Technique of OFDM Signals based on 5G NR Software-Defined Radio System Hikaru Kawasaki, Takeshi Matsumura (NICT) SR2023-24 |
In future information and communication technology society, various services to integrate the real world with virtual sp... [more] | SR2023-24 pp.98-105 |
| RCS, SR, SRW (Joint) |
2023-03-01 17:05 |
Tokyo | Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Basic Implementation of In-Band Full-Duplex Communication System with Self-Interference Cancellation Using Adaptive Filter Wei-Shun Liao, Ou Zhao, Keren Li, Hikaru Kawasaki, Takeshi Matsumura, Fumihide Kojima, Hiroshi Harada (NICT) RCS2022-264 |
For beyond 5G wireless communication systems, in-band full-duplex (IBFD) is one of the important candidate technologies ... [more] | RCS2022-264 pp.100-105 |
| RCS, SR, SRW (Joint) |
2023-03-01 17:30 |
Tokyo | Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
USRP-Based Implementation for In-Band Full-Duplex Communication Systems with Lazy Learning-Aided Self-Interference Cancellation Ou Zhao, Wei-Shun Liao, Keren Li, Hikaru Kawasaki, Takeshi Matsumura, Fumihide Kojima, Hiroshi Harada (NICT) RCS2022-265 |
To further improve spectral efficiency for current wireless communication systems, in our previous studies, we proposed ... [more] | RCS2022-265 pp.106-111 |
| SRW, SeMI, CNR (Joint) |
2022-11-24 13:20 |
Tochigi | Epinard Nasu (Primary: On-site, Secondary: Online) |
Reflected and Diffracted Wave Power Calculation Method based on Wavelength and Object Size
-- Preliminary Verification in a Factory Environment -- Azril Haniz, Hirokazu Sawada, Hikaru Kawasaki, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima (NICT), Kensuke Matsui, Genki Hosokawa (YAZAKI Corporation), Yasuyuki Yanagi (Yazaki Energy System Corporation), Tadahide Kunitachi (YAZAKI Corporation) SRW2022-17 |
In this paper, the received power calculated using ray-tracing simulations is compared with measurement data obtained in... [more] | SRW2022-17 pp.7-12 |
| SRW | 2022-08-22 10:15 |
Online | Online | Analysis of 2.4 GHz Band Received Power Fluctuation in a Factory Environment Azril Haniz, Hirokazu Sawada, Hikaru Kawasaki, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima (NICT), Kensuke Matsui, Genki Hosokawa (YAZAKI Corporation), Yasuyuki Yanagi (Yazaki Energy System Corporation), Tadahide Kunitachi (YAZAKI Corporation) SRW2022-9 |
In this paper, analysis of a long term radio propagation channel measurement to investigate the temporal fluctuations of... [more] | SRW2022-9 pp.2-7 |
| CS | 2022-07-15 10:50 |
Kagoshima | Yakushima Environmental and Cultural Village Center (Primary: On-site, Secondary: Online) |
Trapezoidal Block Householder Reflector and Its Application to Precoding Hikaru Kawasaki, Takeshi Matsumura (NICT) CS2022-32 |
Orthonormalization like singular value decomposition and QR decomposition is closely related to solution representation ... [more] | CS2022-32 pp.83-88 |
| SRW | 2022-06-20 10:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Delay Profile Measurement and Channel Model Study for Factory Environment Hirokazu Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, FUmihide Kojima, Takeshi Matsumura (NICT), Kensuke Matsui, Kotaro Ikeda, Genki Hosokawa, Takuto Kurose (YAZAKI), Yasuyuki Yanagi (YAZAKI ES), Tadahide Kunitachi (YAZAKI) SRW2022-1 |
[more] | SRW2022-1 pp.1-5 |
| RCS, SR, SRW (Joint) |
2022-03-02 13:30 |
Online | Online | Trial Results of Multipath TCP in Heterogeneous Mobile Network Hikaru Kawasaki, Kazuo Ibuka, Fumihide Kojima, Matsumura Takeshi (NICT) RCS2021-265 |
This paper reports the results of the field trials using a testbed to investigate the effectiveness of inter-operator li... [more] | RCS2021-265 pp.74-79 |
| SRW | 2021-06-21 09:00 |
Online | Online | Analysis of 920MHz band received power fluctuation in a factory environment Hirokazu Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, Fumihide Kojima, Takeshi Matsumura (NICT), Kotaro Ikeda, Kensuke Matsui, Takuto Kurose (YAZAKI), Yasuyuki Yanagi (YAZAKI ES), Tadahide Kunitachi (YAZAKI) SRW2021-1 |
[more] | SRW2021-1 pp.1-6 |
| SR | 2021-05-21 14:00 |
Online | Online | [Technology Exhibit]
5G experimental trial based on smart spectrum Kenta Umebayashi, Hiroki Iwata (TUAT), Hirofumi Nakajo (UEC), Hikaru Kawasaki (NICT), Yusaku Babazono, Yoshinori Yahiro (TUAT), Takeo Fujii, Koichi Adachi, Taiki Matsushima (UEC), Yusuke Shibata (ECATV), Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima (NICT) SR2021-18 |
[more] | SR2021-18 pp.120-127 |
| CS | 2020-11-05 15:10 |
Online | Online + Central Community Center, Nonoichi Community Center (Primary: Online, Secondary: On-site) |
[Invited Talk]
Semi-Blind Channel Estimation using Pilot Subcarriers and Subspace Approach in Orthogonal Precoded OFDM Hikaru Kawasaki, Takeshi Matsumura, Fumihide Kojima (NICT) CS2020-50 |
Orthogonal precoded (OP)-orthogonal frequency-division multiplexing (OFDM) is an OFDM scheme with an invertible precodin... [more] | CS2020-50 pp.18-23 |
| CS | 2020-11-06 13:55 |
Online | Online + Central Community Center, Nonoichi Community Center (Primary: Online, Secondary: On-site) |
[Invited Lecture]
Technology for Improving Connectivity with Local Networks Assuming Local 5G and Its Demonstration Takeshi Matsumura, Kazuo Ibuka, Hikaru Kawasaki, Fumihide Kojima (NICT) CS2020-61 |
Local 5G is expected as a system that enables a unique and advanced local network according to respective local demands.... [more] | CS2020-61 pp.69-74 |
| SR, NS, SeMI, RCC, RCS (Joint) |
2020-07-10 13:55 |
Online | Online | Field Trial of Millimeter Wave Local Network System based on RoF Technology in Railway Environment Hikaru Kawasaki, Kazuo Ibuka, Azril Haniz, Takeshi Matsumura, Fumihide Kojima (NICT), Daiki Shibahara, Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima, Shimpei Toyoda, Youichi Watanabe, Takashi Sugawara (JR-EAST), Shogo Ogawa, Daisuke Yamaguchi, Koki Iwamoto, Kazuki Nakamura (RTRI) RCS2020-75 |
For mobile vehicles like trains and automobiles, it is important for local operators to efficiently deploy linear cells ... [more] | RCS2020-75 pp.99-104 |
| RCS | 2020-04-23 10:00 |
Online | Online | Development of Millimeter Wave Local Network System with Service Area Extension based on RoF Technology Takeshi Matsumura, Hikaru Kawasaki, Kazuo Ibuka, Fumihide Kojima (NICT) RCS2020-1 |
Currently, Local 5G (5th Generation Communication System), which provides private services within limited sites such as ... [more] | RCS2020-1 pp.1-6 |
| RCS | 2020-04-23 10:35 |
Online | Online | Demonstration Experiment of Virtual Pre-Connection Scheme for Trains with Millimeter Wave Railway Linear Cell Kazuo Ibuka, Hikaru Kawasaki, Azril Haniz, Takeshi Matsumura, Fumihide Kojima (NICT), Daiki Shibahara, Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR-EAST), Shogo Ogawa, Daisuke Yamaguchi, Koki Iwamoto, Kazuki Nakamura (RTRI) RCS2020-2 |
In the fifth generation mobile communication system (5G), the use of small cells in the super high frequency (SHF) band ... [more] | RCS2020-2 pp.7-11 |
| CS, CAS | 2020-02-28 09:00 |
Kumamoto | Semi-Blind Channel Estimation in Orthogonal Precoded OFDM Hikaru Kawasaki, Takeshi Matsumura, Fumihide Kojima (NICT) CAS2019-113 CS2019-113 |
Orthogonal precoded orthogonal frequency-division multiplexing (OFDM) is an OFDM scheme with an invertible precoding. As... [more] | CAS2019-113 CS2019-113 pp.87-93 |
|
| RCS | 2019-10-24 15:25 |
Kanagawa | Yokosuka Research Park | [Invited Lecture]
R&D on Cooperative Control Schemes Suitable for Local 5G Hikaru Kawasaki, Kazuo Ibuka, Homare Murakami, Kentaro Ishizu, Takeshi Matsumura, Fumihide Kojima (NICT) RCS2019-188 |
The fifth-generation mobile system (5G) is expected to be utilized as a communication infrastructure for a variety of em... [more] | RCS2019-188 pp.57-62 |
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