Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
RCS, SR, SRW (Joint) |
2024-03-13 14:45 |
Tokyo |
The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
A Development of a Same-Frequency Interference Canceller from 5G Base Stations to Satellite Ground Stations Takafumi Fujii (Softbank), Teruya Fujii (Tokyo Tech) SR2023-94 |
5G systems and downlink of satellite communication systems are allocated the same frequency in the C-band. Therefore, th... [more] |
SR2023-94 pp.37-42 |
NS, RCS (Joint) |
2023-12-15 15:15 |
Fukuoka |
Kyushu Institute of Technology Tobata campus, and Online (Primary: On-site, Secondary: Online) |
A Study on Channel Response Estimation of Neighboring Cell Terminals using SRS in 3D Spatial Cell Configuration for Mobile Communications
-- Considering Frequency Offset in SRS -- Takuya Kaneda, Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech) RCS2023-203 |
In 3D spatial cell configuration, multiple small cells are located inside a macro cell, and the same frequency is used f... [more] |
RCS2023-203 pp.135-140 |
NS, RCS (Joint) |
2023-12-15 15:40 |
Fukuoka |
Kyushu Institute of Technology Tobata campus, and Online (Primary: On-site, Secondary: Online) |
Optimization of Base Station Coordinated Virtualized Cell MU-MIMO Canceller according to the Accuracy of Channel Estimation Ryohei Maeda, Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech./SoftBank) RCS2023-204 |
In mobile communication systems such as 5G, ultra-high-speed data transmission anywhere within a cell is expected. In ce... [more] |
RCS2023-204 pp.141-146 |
AP, RCS (Joint) |
2023-11-17 15:35 |
Kumamoto |
Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
Construction of Coordinated Base Stati ons for Network Coordination Interferen ce Canceller Takafumi Fujii, Takuya Kaneda, Ryohei Maeda (Softbank), Teruya Fujii (Tokyo Tech) RCS2023-176 |
[more] |
RCS2023-176 pp.124-128 |
AP, RCS (Joint) |
2023-11-17 16:00 |
Kumamoto |
Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
The same frequency sharing by coordinating between UAV/HAPS and terrestrial cellular Teruya Fujii (Titech), Takafumi Fujii (SoftBank) RCS2023-177 |
HAPS started as a millennium initiative in 2000 AD, but was put on hold. Recently, the "HAPS cellular system" using HAPS... [more] |
RCS2023-177 pp.129-134 |
RCS, SAT (Joint) |
2023-08-31 17:25 |
Nagano |
Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
A ProtPrototyptype of Equipment t that cancels Interference from 5G Base Stations to Satellite Ground Stations Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech) RCS2023-112 |
[more] |
RCS2023-112 pp.49-54 |
RCS, SAT (Joint) |
2023-09-01 09:25 |
Nagano |
Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
A Study on Channel Response Estimation of Neighboring Cell Terminals using SRS in 3D Spatial Cell Configuration for Mobile Communications Takuya Kaneda, Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech) RCS2023-117 |
In a heterogeneous network (HetNet) configuration, multiple small cells are located inside a macro cell, and the same fr... [more] |
RCS2023-117 pp.79-84 |
RCS, SAT (Joint) |
2023-09-01 09:50 |
Nagano |
Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
Virtual Cell MU-MIMO Canceller Coordinating Base Stations in TDD Transmission
-- Eigenmode transmission without feedback of transmit and receive weights -- Ryohei Maeda, Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech./SoftBank) RCS2023-118 |
In mobile communication systems such as 5G, ultra-high-speed data transmission is expected anywhere within a cell. In a ... [more] |
RCS2023-118 pp.85-89 |
RCS, SR, SRW (Joint) |
2023-03-03 09:50 |
Tokyo |
Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
A Study on Further Enhancement of Interference Canceller for Satellite Communication System from 5G Systems with Same Frequency Takafumi Fujii (Softbank), Teruya Fujii (Tokyo Tech) RCS2022-286 |
5G systems and downlink of satellite communication systems are allocated the same frequency in the C-band. Therefore, th... [more] |
RCS2022-286 pp.213-218 |
SAT, RCS (Joint) |
2022-08-25 09:50 |
Hokkaido |
(Primary: On-site, Secondary: Online) |
A Basic Study on Interference Cancelnceller from 5G S ystems to Other Systems with the Same Frequency Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech) RCS2022-97 |
[more] |
RCS2022-97 pp.1-5 |
SAT, RCS (Joint) |
2022-08-25 10:15 |
Hokkaido |
(Primary: On-site, Secondary: Online) |
Uplink interference canceller for macro cell and small cells with cooperative control network in 3Dimension spatial HeNet construction Takuya Kaneda, Takafumi Fujii (SoftBank), Teruya Fujii (Tokyo Tech) RCS2022-98 |
HetNet (Heterogeneous Network), which sets multiple small cells using the same frequency inside each macro cell, is seen... [more] |
RCS2022-98 pp.6-11 |
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) |
AP, RCS (Joint) |
2019-11-21 11:45 |
Saga |
Saga Univ. |
A Study on MIMO Interference Canceller for Reverse Link in HAPS Multipe Gateways System Takafumi Fujii, Yoshichika Ohta (HAPSMobile) RCS2019-219 |
HAPS (High Altitude Platform Station), which is a stratosphere platform around 20Km altitude, cellular communication ser... [more] |
RCS2019-219 pp.97-102 |
RCS, AP (Joint) |
2018-11-22 09:30 |
Okinawa |
Okinawa Industry Support Center |
A Study on Efficient Spectrum Utilization for Feeder Link using Multipe Gateways in HAPS System Takafumi Fujii, Yoshichika Ohta (HAPSmobile) RCS2018-203 |
HAPS (High Altitude Platform Station), which is a stratosphere platform around 20Km altitude, cellular communication ser... [more] |
RCS2018-203 pp.143-148 |