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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 54  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SR, SRW
(Joint)
2024-03-15
13:50
Tokyo The University of Tokyo (Hongo Campus), and 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
 [more] SRW2023-74
pp.106-111
US 2024-02-27
15:25
Tokyo Tokyo Metropolitan Industrial Technology Research Institute (TIRI) 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
(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
(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
(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.
(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) 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 Prediction using Fine-Tuning method with Few Data
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
 Results 1 - 20 of 54  /  [Next]  
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