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All Technical Committee Conferences  (Searched in: Recent 10 Years)

Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 43  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SR, SRW
(Joint)
2025-03-06
09:00
Kyoto Kyoto Institute of Technology (Kyoto, Online)
(Primary: On-site, Secondary: Online)
[Invited Lecture] Research and development of IRS for millimeter wave coverage enhancement in the B5G/6G
Takuya Ohto, Satoshi Ito, Takahiro Hayashi (KDDI Research, Inc.)
(To be available after the conference date) [more]
AP 2025-02-21
15:40
Aichi Toyohashi Univ. of Technology (Aichi, Online)
(Primary: On-site, Secondary: Online)
[Invited Lecture] A Study on Fine-Tuning of Radio Propagation Models Based on Geographical Clustering
Tatsuya Nagao, Takahiro Hayashi (KDDI Research, Inc.)
 [more]
RCS, AP
(Joint)
2024-11-13
15:35
Ishikawa   (Ishikawa, Online)
(Primary: On-site, Secondary: Online)
[Tutorial Lecture] Research and development of user-centric networks for 6G
Takahiro Hayashi, Yu Tsukamoto, Tatsuya Nagao, Issei Kanno, Yoshiaki Amano (KDDI Research, Inc) AP2024-143
With the launch of 5G services, characterized by high speed and capacity, high reliability with low latency, and massive... [more] AP2024-143
pp.44-49
AP 2024-10-16
17:20
Fukuoka ACROS Fukuoka (Fukuoka, Online)
(Primary: On-site, Secondary: Online)
Experimental Validation of Liquid Crystal Metasurface Reflector in Indoor Millimeter-wave System
Hiroki Aoki, Takuya Ohto, Tatsuya Nagao, Takahiro Hayashi (KDDI Research, Inc.), Kazuki Matsunaga, Masayuki ikari, Daijiro Takano, Mitsutaka Okita, Shinichiro Oka (JDI) AP2024-60
The liquid crystal metasurface reflector is a promising technology for overcoming the coverage hole problem in millimete... [more] AP2024-60
pp.24-29
AP 2024-10-17
12:50
Fukuoka ACROS Fukuoka (Fukuoka, Online)
(Primary: On-site, Secondary: Online)
[Poster Presentation] Propagation loss estimation by machine learning using both simulated data by ray-trace method and measured data
Kazuki Yuasa, Rento Hagiwara, Koichi Ichige (Yokohama National Univ.), Keiji Yoshikawa, Tatsuya Nagao, Takahiro Hayashi (KDDI) AP2024-124
 [more] AP2024-124
pp.191-196
AP 2024-06-13
13:55
Tokyo Kikai-Shinko-Kaikan Bldg. (Tokyo, Online)
(Primary: On-site, Secondary: Online)
Generation of Virtual City 3D Model and Analysis of Pathloss Distribution
Rento Hagiwara, Koichi Ichige (Yokohama National Univ), Tatsuya Nagao, Takahiro Hayashi (KDDI Research) AP2024-18
We propose a method of generating virtual city 3D model of which the building occupancy rate is adjustable, and analyze ... [more] AP2024-18
pp.7-12
RCS, SR, SRW
(Joint)
2024-03-15
13:50
Tokyo The University of Tokyo (Hongo Campus), and online (Tokyo, Online)
(Primary: On-site, Secondary: Online)
[Invited Lecture] Radio Channel Emulation in Cyber-Physical Wireless Emulator
Jun-ichi Takada, Nopphon Keerativoranan (Tokyo Tech), Tatsuya Nagao, Takahiro Hayashi (KDDI Research), Minseok Kim (Niigata Univ.), Yukiko Kishiki, Kenshi Horihata, Gilbert Sih Ching, Kento Sugiyama (KKE), Kentaro Saito (Tokyo Tech), Tetsuro Imai, Miyuki Hirose (TDU), Azril Haniz, Hirokazu Sawada, Takeshi Matsumura (NICT) SRW2023-74
This report presents a specific implementation of radio channel emulation techniques and data in the cyber-physical wire... [more] SRW2023-74
pp.106-111
US 2024-02-27
15:25
Tokyo Tokyo Metropolitan Industrial Technology Research Institute (TIRI) (Tokyo) Generation of photoacoustic Chirp signal by gate-controlled laser irradiation and its performance validation
Kazuyuki Nakahata, Kenta Yamauchi (Ehime Univ.), Takahiro Hayashi (Osaka Univ.) US2023-78
Ultrasonic waves generated in a solid by the photoacoustic effect of laser irradiation have a wide frequency range. Ther... [more] US2023-78
pp.26-28
AP 2024-02-16
15:25
Mie Sinfonia Technology Hibiki Hall Ise (Mie, Online)
(Primary: On-site, Secondary: Online)
[Invited Lecture] A Beam Switching Algorithm Combining Terahertz Band Antennas and IMU Using Particle Filter
Michihiro Harada, Tatsuya Nagao, Satoshi Ito, Takahiro Hayashi (KDDI Research) AP2023-198
(To be available after the conference date) [more] AP2023-198
pp.56-61
AP, WPT
(Joint)
2024-01-17
13:25
Niigata Tokimate, Niigata University (Niigata, Online)
(Primary: On-site, Secondary: Online)
[Invited Lecture] A Study on 300GHz Band Propagation Loss Estimation Method for the BAN Assuming walking
Kazuki Takezawa, Stoshi Ito, Takahiro Hayashi (KRI) AP2023-161
 [more] AP2023-161
pp.7-12
AP, WPT
(Joint)
2024-01-19
15:25
Niigata Tokimate, Niigata University (Niigata, Online)
(Primary: On-site, Secondary: Online)
[Invited Lecture] Radio Propagation Modeling Using CNN with Rectangular Map Data
Tatsuya Nagao, Takahiro Hayashi (KDDI Research, Inc.) AP2023-184
Recently, machine learning-based methods using environmental information as features have been proposed to model site-sp... [more] AP2023-184
pp.126-130
ED, MWPTHz 2023-12-21
16:05
Miyagi RIEC, Tohoku Univ. (Miyagi, Online)
(Primary: On-site, Secondary: Online)
[Invited Talk] Virtualized terminal technologies for high-capacity communications toward Beyond 5G
Yoshio Kunisawa, Takahiro Hayashi (KDDI Research) ED2023-55 MWPTHz2023-65
The Beyond 5G mobile communication system will require the high-speed data transmission in uplink communication as well ... [more] ED2023-55 MWPTHz2023-65
pp.11-15
AP
(2nd)
2023-12-07
16:25
Wakayama Kiboukan (Nanki Shirahama) (Wakayama) 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 (Kumamoto, Online)
(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 (Iwate, Online)
(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 (Hokkaido, Online)
(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 (Nagano) 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 (Okinawa, Online)
(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 (Toyama, Online)
(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 (Yamaguchi, Online)
(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
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