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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 136  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, AP
(Joint)
2024-11-15
12:35
Ishikawa  
(Primary: On-site, Secondary: Online)
[Invited Lecture] A study of direction of arrival estimation by antenna array utilizing received signal levels
Ryo Watabe, Kenta Umebayashi (TUAT), Antti Tolli (UoO) AP2024-152 RCS2024-168
This study shows that the accuracy of DOA (Direction Of Arrival) estimation using array antennas can be improved by util... [more] AP2024-152 RCS2024-168
pp.93-98(AP), pp.86-91(RCS)
RCC, RCS, SeMI, NS, SR, RISING
(Joint)
2024-07-19
17:20
Hokkaido Hokkaido Citizens Activities Promotion Center
(Primary: On-site, Secondary: Online)
A study on deep learning based weight and spacing control adaptive array antenna
Kenta Umebayashi, Ugo Kamada (TUAT), Antti Tolli (UoO) RCS2024-115
 [more] RCS2024-115
pp.150-154
SR 2024-01-26
09:35
Nagano Nagano-ken JA building
(Primary: On-site, Secondary: Online)
Enhanced Signal Detection and transmit signal Design for Massive SIMO Communications with 1-Bit ADCs
Doaa Abdelhameed (Aswan Univ.), Kenta Umebayashi (TUAT), Italo Atzeni, Antti Tölli (UoO) SR2023-78
 [more] SR2023-78
pp.34-41
SR 2024-01-26
14:35
Nagano Nagano-ken JA building
(Primary: On-site, Secondary: Online)
Initialization of FCME algorithm for real-time noise floor estimation
Yau Hong Leow, Kenta Umebayashi (TUAT), Janne Lehtomaki (UoO), Miguel Lopez-Benitez (UoL) SR2023-84
This paper investigates the initialization of the Forward Consecutive Mean Excision (FCME) algorithm for real-time noise... [more] SR2023-84
pp.62-69
SIP, IT, RCS 2024-01-18
17:35
Miyagi
(Primary: On-site, Secondary: Online)
Analysis of antenna selection based adaptive antenna for interference cancellation
Jumpei Shimaoka, Kenta Umebayashi (Tokyo Univ. of Agriculture and Technology), Antti Tolli (University of Oulu) IT2023-49 SIP2023-82 RCS2023-224
Adaptive antenna array based on two antenna selection (AAA-TS: Adaptive Antenna Array based on Two antenna Selection) is... [more] IT2023-49 SIP2023-82 RCS2023-224
pp.99-104
RCS, SR, SRW
(Joint)
2023-03-01
16:40
Tokyo Tokyo Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
Design of SVD-Precoded Faster-Than-Nyquist Signaling Considered Inter-Block-Interference
Yuto Ikarashi, Kenta Umebayashi (TUAT) RCS2022-266
Singular-Value-Decomposition-Precoded Faster-Than-Nyquist Signaling(SVD-FTNS) is considered as method to efficiently uti... [more] RCS2022-266
pp.112-117
RCS, SR, SRW
(Joint)
2023-03-02
13:50
Tokyo Tokyo Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
[Invited Talk] Channel model and characteristics for THz wireless communications
Kenta Umebayashi (TUAT) RCS2022-277 SR2022-89 SRW2022-54
 [more] RCS2022-277 SR2022-89 SRW2022-54
pp.173-180(RCS), pp.32-39(SR), pp.58-65(SRW)
RCS, SR, SRW
(Joint)
2023-03-03
09:00
Tokyo Tokyo Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
Analysis of the SINR properties of AAA-WS under multipath environment
Jumpei Shimaoka, Shun Ishihara, Kenta Umebayashi (Tokyo Univ. of Agriculture and Technology) RCS2022-284
In this paper, we analyze the SINR properties of adaptive antenna array based on not only weight but also antenna space ... [more] RCS2022-284
pp.201-206
AP, RCS
(Joint)
2021-11-11
11:20
Nagasaki NBC-Bekkan (Nagasaki)
(Primary: On-site, Secondary: Online)
A study on SINR Characteristics of Adaptive Antenna Array based on Weight and Antenna Space Control
Shun Ishihara, Kenta Umebayashi (TUAT), Antti Tolli (UOO) RCS2021-160
This paper addresses the analysis of the performance of adaptive antenna array based on weight and antenna space control... [more] RCS2021-160
pp.92-97
SR 2021-11-04
14:05
Online Online [Invited Talk] 5G experimental trial based on smart spectrum in 5G-Enhance project
Kenta Umebayashi (TUAT) SR2021-47
 [more] SR2021-47
pp.38-45
SR 2021-11-05
14:15
Online Online Initialization of forward method in CFAR outlier detection
Yau Hong Leow, Kenta Umebayashi (TUAT), Janne Lehtomaki (UoO) SR2021-57
To solve the spectrum scarcity problem, energy detection (ED) is an effective technique to find the vacant spectrum for ... [more] SR2021-57
pp.98-103
SR 2021-05-20
10:25
Online Online Energy Detection for M-QAM Signals
Shun Ishihara, Kenta Umebayashi (TUAT), Janne Lehtomaki (UOO) SR2021-2
In this paper, we compare several analyses of energy detection for $M$-ary quadrature amplitude modulation (QAM) signals... [more] SR2021-2
pp.8-15
SR 2021-05-21
14:00
Online Online [Technology Exhibit] 5G experimental trial based on smart spectrum
Kenta Umebayashi, Hiroki Iwata (TUAT), Hirofumi Nakajo (UEC), Hikaru Kawasaki (NICT), Yusaku Babazono, Yoshinori Yahiro (TUAT), Takeo Fujii, Koichi Adachi, Taiki Matsushima (UEC), Yusuke Shibata (ECATV), Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima (NICT) SR2021-18
 [more] SR2021-18
pp.120-127
EMCJ, MICT
(Joint)
2021-03-05
13:35
Online Online A Study of noise source identification method based on near-field measurement of switching power supplies
Hiroyasu Sano, Satoshi Suzuki, Yasuaki Kaneda, Hidekatsu Sasaki (TIRI), Kenta Umebayashi (TAT) EMCJ2020-78
Fast switching increases the radiated noise, which is a problem that exceeds the regulation value of radiated emission t... [more] EMCJ2020-78
pp.30-34
RCS, SR, SRW
(Joint)
2021-03-04
11:35
Online Online [Poster Presentation] Measurement Results of 920MHz LPWA Radiowave Propagation at Half Wavelength Interval in LOS/NLOS Environment
Tomoyuki Kawashima, Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT), Hiroshi Naruse (Mie Univ.) RCS2020-236 SR2020-75 SRW2020-65
 [more] RCS2020-236 SR2020-75 SRW2020-65
pp.161-162(RCS), pp.54-55(SR), pp.49-50(SRW)
RCS, SR, SRW
(Joint)
2021-03-04
11:35
Online Online [Poster Presentation] Spatially Interpolated Measurement Results of Environmental Information for Optimization of Sensor Placement and Its Evaluation
Ryoma Yasutani, Koki Kitazumi, Shusuke Narieda (Mie Univ.), Takeo Fujii (UEC), Kenta Umebayashi (TUAT), Hiroshi Naruse (Mie Univ.) RCS2020-238 SR2020-77 SRW2020-67
 [more] RCS2020-238 SR2020-77 SRW2020-67
pp.165-166(RCS), pp.58-59(SR), pp.53-54(SRW)
SIP, IT, RCS 2021-01-21
13:35
Online Online A study on SINR Characteristics of Adaptive Antenna Array based on Weight and Antenna Space Control
Shun Ishihara, Kenta Umebayashi (TUAT), Antti Tolli (UOO) IT2020-77 SIP2020-55 RCS2020-168
In this paper, we address the analysis of the performance of adaptive antenna array based on weight and antenna space co... [more] IT2020-77 SIP2020-55 RCS2020-168
pp.81-86
SR 2020-11-18
13:55
Online Online Study on Quick Detection of Video Streaming based on Spectrum Measurement
Hiroto Ebisawa, Kenta Umebayashi (TUAT), Janne Lehtomaki (University of Oulu) SR2020-27
For a dynamic channel selection/allocation in a high-dense wireless local area network (WLAN), traffic information in ea... [more] SR2020-27
pp.29-36
SR 2020-11-18
14:20
Online Online A Study on Noise Power Estimation based on Goodness of Fit Statistics
Hiroki Iwata, Kenta Umebayashi (TUAT) SR2020-28
This paper focuses on spectrum sensing and spectrum measurement exploiting an energy detector. In this case, an noise po... [more] SR2020-28
pp.37-43
IN, RCS, NV
(Joint)
2020-05-22
09:30
Online Online A Study on antenna selection criterion for adaptive array antenna based on selecting antenna elements
Takahiro Suzuki, Kenta Umebayashi (TUAT), Quang-Doanh Vu (UoO) RCS2020-18
 [more] RCS2020-18
pp.43-48
 Results 1 - 20 of 136  /  [Next]  
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