Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
AP |
2024-03-14 10:00 |
Fukui |
UNIVERSITY OF FUKUI (Primary: On-site, Secondary: Online) |
A Study on Antenna Configuration for LoS-MIMO in HAPS Feeder Link Kazuki Matsuura, Yoshichika Ohta (SoftBank) AP2023-201 |
High-Altitude Platform Station (HAPS) is a new mobile communications platform that enables ultrawide coverage and disast... [more] |
AP2023-201 pp.1-6 |
AP |
2024-03-14 10:25 |
Fukui |
UNIVERSITY OF FUKUI (Primary: On-site, Secondary: Online) |
Direction of arrival estimation using neural networks and Uniform Cross Array for LoS-MIMO transmission Motoshi Tawada, Yoshichika Ohta (SoftBank) AP2023-202 |
The feeder link between the fixed ground station and the HAPS requires high capacity to accommodate the traffic of termi... [more] |
AP2023-202 pp.7-10 |
RCS, SR, SRW (Joint) |
2024-03-13 14:00 |
Tokyo |
The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Mountain Rescue Training by using Wireless Relay System mounted on Drone Liang Zhang, Keisuke Maesako, Kazuki Matsuura, Yusuke Tajima, Yoshichika Ota, Norikazu Eda, Susumu Yoneda (SoftBank) SRW2023-54 |
In rescue missions in mountainous areas, it’s imperative to quickly locate the person in distress. To achieve this, we p... [more] |
SRW2023-54 pp.41-46 |
AP, WPT (Joint) |
2024-01-17 14:25 |
Niigata |
Tokimate, Niigata University (Primary: On-site, Secondary: Online) |
2.45 GHz High-Efficiency Power Amplifier for Integration and Cooperation of Telecommunication and Wireless Power Transfer Yuki Takagi, Yuta Nakamoto, Takashi Hirakawa, Yoshichika Ohta, Naoki Hasegawa (SB) WPT2023-30 |
In this paper, we present a transmitter configuration of wireless devices that is optimized for both information transmi... [more] |
WPT2023-30 pp.1-5 |
MW |
2023-11-16 11:15 |
Okinawa |
Nago City Industrial Support Center (Okinawa) (Primary: On-site, Secondary: Online) |
Dual-Band Asymmetric Doherty Amplifier with T-shaped Stubs Yuki Takagi, Yoshichika Ohta (SB) MW2023-127 |
In this paper, we propose a design method for a dual-band asymmetric Doherty amplifier at 1.8 GHz(Band3)/2.1 GHz (Band1)... [more] |
MW2023-127 pp.7-12 |
WPT |
2023-06-30 13:40 |
Tokyo |
(Primary: On-site, Secondary: Online) |
[Invited Talk]
Study on Integration and Cooperation of Telecommunication and Wireless Power Transfer Yuta Nakamoto, Naoki Hasegawa, Takashi Hirakawa, Yoshichika Ohta (SoftBank Corp.) WPT2023-10 |
The IoT business has been developing rapidly in recent years, and IoT devices are expected to become more widespread in ... [more] |
WPT2023-10 p.2 |
RCS, IN, NV (Joint) |
2023-05-25 10:50 |
Kanagawa |
Keio University (Hiyoshi Campus), and online (Primary: On-site, Secondary: Online) |
Performance Evaluation of Digital Self-Interference Cancellers for In-Band Full-Duplex Systems with High-Power Amplifiers Motoshi Tawada, Yuki Takagi, Yoshichika Ohta (SoftBank) RCS2023-16 |
In-band full-duplex communication (IBFD), which performs transmission and reception in the same frequency band at the sa... [more] |
RCS2023-16 pp.13-17 |
AP |
2023-02-15 13:50 |
Miyagi |
Tohoku University, Aobayama Campus (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Design and Analysis of LoS-MIMO System with Uniform Cross Array Composed of Dual-polarized Antennas Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (SoftBank) AP2022-204 |
Research and development of communication services using radios and antennas mounted on vehicles, unmanned aerial vehicl... [more] |
AP2022-204 pp.40-45 |
AP |
2023-02-16 15:20 |
Miyagi |
Tohoku University, Aobayama Campus (Primary: On-site, Secondary: Online) |
[Tutorial Lecture]
Research and development of HAPS wireless relay system Yoshichika Ohta (Softbank) AP2022-219 |
HAPS (High-Altitude Platform Stations), which provide mobile communication services by installing base station equipment... [more] |
AP2022-219 pp.121-126 |
RCS, AP, UWT (Joint) |
2022-11-16 14:55 |
Fukuoka |
Kyushu University, and Online (Primary: On-site, Secondary: Online) |
LoS-MIMO Transmission Experiment Using Dual-polarized Antennas. Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (SoftBank) AP2022-163 |
Research and development of communication services using radios and antennas mounted on vehicles, UAVs, HAPS, and other ... [more] |
AP2022-163 pp.91-96 |
MW |
2022-11-15 13:50 |
Nagasaki |
Fukue-Bunka-Kaikan (Primary: On-site, Secondary: Online) |
Study on Power Consumption and Power Reduction of RF Power Amplifier in 5G Downlink System Yuki Takagi, Yoshichika Ohta (SB) MW2022-113 |
This paper proposes the estimation of power consumption of RF power amplifier in downlink (from base station to UE) comm... [more] |
MW2022-113 pp.25-30 |
AP, MW (Joint) |
2022-09-15 13:50 |
Ehime |
The Museum of Art, EHIME (Primary: On-site, Secondary: Online) |
Prototype Development and Basic Experimental Evaluation of Feeder Link Transceiver in HAPS System Kazuki Matsuura, Yoshichika Ohta (SoftBank) AP2022-79 |
High-Altitude Platform Station (HAPS) is attracting much attention as a new mobile communications platform realizing ult... [more] |
AP2022-79 pp.44-49 |
AP |
2022-08-19 13:25 |
Tochigi |
Tochigi Prefecture Industrial Center (Primary: On-site, Secondary: Online) |
A Study on Robust LoS-MIMO Transmission in HAPS Feeder Link Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (Softbank) AP2022-68 |
In line of sight multiple input multiple output (LoS-MIMO) transmission in a feeder link, which involves communication b... [more] |
AP2022-68 pp.23-28 |
NS, SR, RCS, SeMI, RCC (Joint) |
2022-07-14 11:45 |
Ishikawa |
The Kanazawa Theatre + Online (Primary: On-site, Secondary: Online) |
An Experimental Study on Automatic Gain Control in HAPS Repeater System Takuya Hasegawa, Mitsukuni Konishi, Yoshichika Ohta, Atsushi Nagate (SoftBank) SR2022-29 |
High-Altitude Platform Station (HAPS) is a new mobile communication platform which enables to directly provide mobile co... [more] |
SR2022-29 pp.41-47 |
AP |
2022-02-17 10:25 |
Online |
Online |
[Invited Lecture]
A Study on HAPS Feeder Link System Yoshichika Ohta, Kazuki Matsuura, Bing Han (Softbank) AP2021-160 |
HAPS (High-Altitude Platform Stations), which provide mobile communication services by installing base station equipment... [more] |
AP2021-160 pp.11-15 |
CQ, ICM, NS, NV (Joint) |
2021-11-25 13:45 |
Fukuoka |
JR Hakata Stn. Hakata EkiHigashi Rental Room (Primary: On-site, Secondary: Online) |
[Invited Talk]
R&D of HAPS Mobile Communication Systems Kenji Hoshino, Yoshichika Ota, Atsushi Nagate (SoftBank) NS2021-82 CQ2021-66 ICM2021-20 |
The High Altitude Platform Station (HAPS), which covers an ultra-wide area from the stratosphere at an altitude of about... [more] |
NS2021-82 CQ2021-66 ICM2021-20 p.1(NS), p.17(CQ), p.1(ICM) |
AP, RCS (Joint) |
2021-11-10 13:30 |
Nagasaki |
NBC-Bekkan (Nagasaki) (Primary: On-site, Secondary: Online) |
[Invited Lecture]
A Study on Interference Canceller for HAPS Feeder Links with Multi-Gateways under Multiple-Path Environment Takafumi Fujii, Yoshichika ohta (Softbank.corp) AP2021-101 RCS2021-148 |
HAPS (High Altitude Platform Station), which is a stratosphere platform around 20Km altitude, cellular communication ser... [more] |
AP2021-101 RCS2021-148 pp.3-9(AP), pp.21-27(RCS) |
CQ |
2021-08-04 13:15 |
Online |
Online |
[Invited Talk]
Technology for Improving Communication Quality in HAPS Mobile Communication Systems Atsushi Nagate, Kenji Hoshino, Yoshichika Ota (SoftBank) CQ2021-30 |
[more] |
CQ2021-30 p.45 |
WPT |
2021-03-05 11:35 |
Online |
Online |
Small-Size Rectenna Drone and Magnetron Transmitter Naoki Hasegawa (SB), Teruo Fujiwara (Sho-Engineering), Yuta Nakamoto, Yoshichika Ohta (SB) WPT2020-46 |
This work discusses the microwave-power transfer (MPT) to a small done for the first step of research program on
wirele... [more] |
WPT2020-46 pp.62-66 |
AP |
2021-02-19 14:25 |
Online |
Online |
[Invited Lecture]
A study on multi-beam conformal array antenna for UAV platforms (1) Yoshichika Ohta (Softbank) AP2020-128 |
HAPS (High-Altitude Platform Stations), which provide mobile communication services by installing base station equipment... [more] |
AP2020-128 pp.68-72 |