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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 14 of 14  /   
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
 Results 1 - 14 of 14  /   
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