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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP, WPT (Joint) |
2024-01-17 13:25 |
Niigata | Niigata Univ. (Primary: On-site, Secondary: Online) |
[Invited Lecture]
A Study of Estimation Method for the BAN in the 300GHz Band Kazuki Takezawa, Stoshi Ito, Takahiro Hayashi (KRI) |
[more] | |
| AP, WPT (Joint) |
2024-01-19 15:25 |
Niigata | Niigata Univ. (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Path Loss Modeling based on Machine Learning using Environmental Information as Sequential Data Tatsuya Nagao, Takahiro Hayashi (KDDI Research, Inc.) |
[more] | |
| AP, WPT (Joint) |
2024-01-19 16:25 |
Niigata | Niigata Univ. (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Direction of arrival information in propagation loss estimation using machine learning Kazuki Yuasa, Rento Hagiwara, Koichi Ichige (YNU), Tatsuya Nagao, Takahiro Hayashi (KDDI Research Inc.) |
[more] | |
| ED, MWPTHz | 2023-12-21 16:05 |
Miyagi | RIEC, Tohoku Univ. (Primary: On-site, Secondary: Online) |
[Invited Talk]
Virtualized Teminal for High Capacity Communication towrds Beyond 5G Mobile Communications System Yoshio Kunisawa, Takahiro Hayashi (KDDI Research) |
[more] | |
| AP (2nd) |
2023-12-07 16:25 |
Wakayama | Kiboukan (Nanki Shirahama) | Area Evaluation of Sub6-band Manhole Lens Antenna by Computer Simulation Masayuki Nakano, Masayuki Nakano, Takahiro Hayashi (KDDI Research) |
[more] | |
| AP, RCS (Joint) |
2023-11-15 15:35 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
Propagation Loss Estimation Method for IRS using RCS Based on the First Fresnel Zone Hiroki Aoki, Satoshi Ito, Takuya Ohto, Takahiro Hayashi (KDDI Research)  AP2023-138 |
IRS (Intelligent Reflecting Surface) is a promising technology to overcome a coverage hole problem in millimeter wave ... [more] |
AP2023-138 pp.47-52 |
| AP | 2023-10-20 10:30 |
Iwate | Iwate University (Primary: On-site, Secondary: Online) |
Improvement of characteristics in 700-800MHz band in 8-wave multiband antenna for mobile communication Masayuki Nakano, Yosyio Kunisawa, Takahiro Hayashi (KDDI Research, Inc) AP2023-122 |
The authors conducted computer simulations and prototypes of small, low-profile multiband MIMO antennas for mobile commu... [more] | AP2023-122 pp.127-132 |
| AP, SANE, SAT (Joint) |
2023-07-12 18:00 |
Hokkaido | The Citizen Activity Center (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Simplified Multiple Screen Diffraction Calculation Method Using Direct Wave Components in Physical Optics Satoshi Ito, Takahiro Hayashi (KDDI Research, Inc.) AP2023-39 |
This paper proposes a method to reduce the computational cost in the numerical calculation of multiple screen diffractio... [more] | AP2023-39 pp.44-48 |
| AP (2nd) |
2023-06-01 14:45 |
Nagano | Nagano Prefecture Minamimaki Village Office, Central Public Hall | Evaluation of terahertz wave patch antenna and meander line antenna considering the influence of human body Masayuki Nakano, Yoshio Kunisawa, Takahiro Hayashi (KDDI Research) |
[more] | |
| AP | 2023-05-12 10:00 |
Okinawa | Okinawa Gender Equality Center (Primary: On-site, Secondary: Online) |
A Study on Radio Propagation Modeling using RNN-Encoder with Variable-Size Map Data Tatsuya Nagao, Takahiro Hayashi (KDDI Research) AP2023-17 |
For efficient evaluation of the performance of wireless systems in physical space, wireless emulation techniques in virt... [more] | AP2023-17 pp.48-53 |
| AP | 2023-03-17 10:55 |
Toyama | Toyama Prefectural Civic Hall (Primary: On-site, Secondary: Online) |
AP2022-244 |
FDTD for electromagnetic field simulation was performed on a manhole-type antenna in a mobile communication base station... [more] | AP2022-244 pp.61-66 |
| RCC, ISEC, IT, WBS | 2023-03-15 11:00 |
Yamaguchi | (Primary: On-site, Secondary: Online) |
[Invited Talk]
Virtualized terminal utilizing the terahertz band for high-capacity communications toward Beyond 5G/6G Takahiro Hayashi, Yoshio Kunisawa, Tatsuya Nagao, Kazuki Takezawa, Satoshi Ito, Hiromi Matsuno, Yoji Kishi (KDDI Research, Inc) IT2022-110 ISEC2022-89 WBS2022-107 RCC2022-107 |
In the 2030s, when Beyond 5G/6G is expected to be realized, a cyber-physical system (CPS) that integrates physical and c... [more] | IT2022-110 ISEC2022-89 WBS2022-107 RCC2022-107 pp.263-268 |
| AP | 2023-02-15 14:15 |
Miyagi | Tohoku University, Aobayama Campus (Primary: On-site, Secondary: Online) |
[Invited Lecture]
A Study of Angle Estimation Algorithm Using Multibeam Antenna for THz Short-Range Mobile Communication
-- Evaluation of Estimation Accuracy Near the Antenna -- Hiromi Matsuno, Tatsuya Nagao, Takahiro Hayashi (KDDI Research) AP2022-205 |
[more] | AP2022-205 pp.46-51 |
| AP (2nd) |
2022-12-08 09:35 |
Okinawa | (Primary: On-site, Secondary: Online) |
Simulation evaluation of antennas and human body in microwave to terahertz wave Masayuki Nakano, Yoshio Kunisawa, Takahiro Hayashi (KDDI Research) |
[more] | |
| RCS, AP, UWT (Joint) |
2022-11-16 15:35 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Experimental Evaluation of Intelligent Reflecting Surface (IRS) for Beyond 5G /6G Mobile Communication Systems
-- Scattering Pattern and Path-Loss -- Hiromi Matsuno, Takuya Ohto, Michihiro Harada, Tatsuya Nagao, Takahiro Hayashi (KDDI Research, Inc.) AP2022-157 RCS2022-171 |
[more] | AP2022-157 RCS2022-171 pp.57-61(AP), pp.96-100(RCS) |
| AP, MW (Joint) |
2022-09-14 14:40 |
Ehime | The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
A Study of Building Map Representation for Spatiotemporal Channel Parameters Estimation Model by Machine Learning Keiji Yoshikawa, Tatsuya Nagao, Kazuki Takezawa, Takahiro Hayashi (KDDI Research, Inc) AP2022-78 |
Wireless emulators are being developed to design and evaluate wireless systems in virtual space. To emulate various envi... [more] | AP2022-78 pp.38-43 |
| AP, MW (Joint) |
2022-09-15 14:40 |
Ehime | The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
A Study on Radio Propagation Characteristics at 100 GHz Band between the User Equipment and a Wearable Device Kazuki Takezawa, Tatsuya Nagao, Takahiro Hayashi (KDDI Research) AP2022-81 |
[more] | AP2022-81 pp.56-61 |
| AP, MW (Joint) |
2022-09-15 15:05 |
Ehime | The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
Radio Propagation Modeling with Few Data using Fine-Tuning Tatsuya Nagao, Takahiro Hayashi (KDDI Research) AP2022-82 |
Wireless communication systems, such as Beyond 5G, are expected to be essential social infrastructure, and numerous devi... [more] | AP2022-82 pp.62-67 |
| RCS | 2022-06-15 09:55 |
Okinawa | University of the Ryukyus, Senbaru Campus and online (Primary: On-site, Secondary: Online) |
Simulation Evaluation of Millimeter Wave Cell Free massive MIMO for Realistic Deployment Environment Shunsuke Kamiwatari, Issei Kanno, Takahiro Hayashi, Yoshiaki Amano (KDDI Research, Inc.) RCS2022-25 |
Cell-free massive MIMO (CF mMIMO) is a candidate elemental technology for Beyond 5G. In this paper, we report the result... [more] | RCS2022-25 pp.7-12 |
| SRW | 2021-08-24 14:15 |
Online | Online | [Invited Lecture]
On the Radio Propagation Modeling for Advanced Wireless Emulator Based on Cyber Physical Fusion Jun-ichi Takada, Nopphon Keerativoranan (Tokyo Tech), Takahiro Hayashi (KDDI Research), Minseok Kim (Niigata Univ), Yukiko Kishiki, Wataru Okamura (KKE), Kentaro Saito (Tokyo Tech), Tetsuro Imai, Miyuki Hirose (TDU), Hirokazu Sawada, Takeshi Matsumura (NICT) SRW2021-23 |
This report presents the radio propagation modeling technology for the implementation of advanced wireless emulator base... [more] | SRW2021-23 pp.21-26 |
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