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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 51  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2022-10-20
15:00
Gifu GIFU CITY CULTURE CENTER
(Primary: On-site, Secondary: Online)
A Study on Permittivity Estimation of Building Materials by Standing Wave Method
Hiroki Aizawa, Toshiyuki Maeyama (Takushoku Univ.)
(To be available after the conference date) [more]
RCS, SR, SRW
(Joint)
2022-03-04
14:05
Online Online Extraction of Features for Classification by Machine Learning of Electromagnetic Noise Corresponding to Various Manufacturing Field Environments
Michio Miyamoto, Ayano Ohnishi, Yoshio Takeuchi (ATR), Toshiyuki Maeyama (ATR/Takushoku Univ.), Akio Hasegawa, Hiroyuki Yokoyama (ATR) SR2021-118
We extract electromagnetic noise from time-series spectrum data measured at the manufacturing site. In this case, it is ... [more] SR2021-118
pp.139-145
RCS, SR, SRW
(Joint)
2022-03-04
14:30
Online Online Automatic Spectrum Sharing by using Smart Contracts and CA
Nobuo Suzuki (ATR/Kindai Univ.), Toshiyuki Maeyama (Takushoku Univ.), Tatsuya Yoshioka, Akio Hasegawa, Hiroyuki Yokoyama (ATR) SR2021-119
It is effective to utilize existing spectrum resources in order to realize more advanced mobile communication systems su... [more] SR2021-119
pp.146-153
AP 2021-10-07
13:00
Online Online [Poster Presentation] Study on Equivalent Permittivity Estimating Method for Composite Materials
Hiroki Aizawa, Toshiyuki Maeyama (Takushoku Univ.) AP2021-80
In order to estimate indoor propagation characteristics by electromagnetic analysis method, accurate electrical constant... [more] AP2021-80
pp.51-53
AP 2021-08-20
10:00
Online Online A Study on Permittivity Estimation of Building Materials
Hiroki Aizawa, Yuya Arakawa, Toshiyuki Maeyama (Takushoku Univ), Takehiro Turuta (Takenaka Technical Research Institute) AP2021-48
The authors are working on the estimate of the indoor propagation characteristics using the electromagnetic analytical t... [more] AP2021-48
pp.1-6
AP, SANE, SAT
(Joint)
2021-07-28
16:20
Online Online [Invited Lecture] A Study on Path Loss Prediction Formula for IoT wireless system close to Concrete Ceiling with Flat Surface in 920MHz band
Naotake Yamamoto, Taichi Sasaki, Atsushi Yamamoto, Tetsuya Hishikawa (Panasonic), Kentaro Saito (Tokyo Denki Univ.), Junichi Takada (Tokyo Tech.), Toshiyuki Maeyama (Takushoku Univ.) AP2021-32
With the growth of the IoT (Internet of Things) market in recent years, wireless devices in the 920MHz band have been im... [more] AP2021-32
pp.49-54
RCS, SR, SRW
(Joint)
2021-03-05
16:55
Online Online Electromagnetic Noise Classification and Novelty Detection for Frequency Sharing among Various Communications in the Manufacturing Field
Michio Miyamoto, Ayano Ohnishi, Yoshio Takeuchi (ATR), Toshiyuki Maeyama (ATR/Takushoku Univ.), Akio Hasegawa, Hiroyuki Yokoyama (ATR) SR2020-89
Machine learning is applied to classify the electromagnetic noise generated in the manufacturing field. The frequency an... [more] SR2020-89
pp.99-103
SR 2021-01-25
10:25
Online Online A Study on Dynamic and Autonomous Decentralized Spectrum Sharing System
Haruya Oguni, Toshiyuki Maeyama (Takushoku Univ.), Tatsuya Yoshioka (ATR), Nobuo Suzuki (Kindai Univ.), Akio Hasegawa, Hiroyuki Yokoyama (ATR) SR2020-48
Due to the recent development of mobile telecommunication systems, there is concern about the shortage of spectrum resou... [more] SR2020-48
pp.9-14
RCS, AP, UWT
(Joint)
2020-11-27
15:40
Online Online A Study of Indoor Propagation Analysis Using the FDTD Method
Yuya Arakawa, Hiro Shimada, Toshiyuki Maeyama (Takushoku Univ.), Naotake Yamamoto, Tetsuya Hishikawa (Panasonic), Kentaro Saito, Jun-ichi Takada (Tokyo Tech) AP2020-93
The authors use the FDTD method (Finite Difference Time Domain method) and ray tracing method, which are electromagnetic... [more] AP2020-93
pp.107-111
SR 2019-12-06
10:00
Okinawa Ishigaki City Hall (Ishigaki Island) Current status and issues of Spectrum sharing proposals by using Blockchain
Nobuo Suzuki, Tatsuya Yoshioka, Akio Hasegawa, Toshiyuki Maeyama (ATR) SR2019-100
It is important to utilize the existing spectrum resource for further advanced mobile communication systems like 5G. Som... [more] SR2019-100
pp.63-68
AP, RCS
(Joint)
2019-11-21
10:15
Saga Saga Univ. Study of Frequency Usage Prediction Using Machine Leaning for Spectrum Sharing
Hiroki Hosoi, Toshiyuki Maeyama (Takushoku Univ.), Tatsuya Yoshioka (ATR), Nobuo Suzuki (Kindai Univ.) RCS2019-216
Recently, traffic has been increasing rapidly, there is concern about the depletion of frequency resources. For this rea... [more] RCS2019-216
pp.79-84
AP 2019-08-21
15:25
Hokkaido Hokkai-Gakuen Univ. Study of Electromagnetic Analysis Method in Large Indoor Space
Hiro Shimada, Toshiyuki Maeyama (Takushoku Univ.), Naotake Yamamoto, Tetsuya Hishikawa (Panasonic) AP2019-51
FDTD method and Ray-tracing method are often used as analysis methods of radio wave propagation in a large area. Analysi... [more] AP2019-51
pp.23-28
AP 2019-08-23
09:55
Hokkaido Hokkai-Gakuen Univ. Experimental Evaluation and Design of the 920MHz Band Antennas with Directivity, Polarization, and Space Diversity for Indoor IoT Devices
Naotake Yamamoto (Panasonic), Kobayashi Hiroaki, Yasunori Komukai, Masayuki Obata, Takashi Izumi (PSNRD), Toshiyuki Maeyama (Takushoku Univ.) AP2019-64
A IoT (Internet of Things) system using the 920 MHz band in indoor environment has become widespread.
The IoT devices a... [more]
AP2019-64
pp.91-96
AP 2017-08-25
09:30
Hokkaido National Institute of Technology, Hakodate College Propagation analysis of 920MHz band by Ray Tracing method composed of Reinforced concrete walls
Genma Hattori, Yasuhiro Tsunemitsu, Toshiyuki Maeyama (Takushoku Univ.), Toshiyasu Tanaka (MWF) AP2017-79
In order for IoT devices to penetrate widely, appropriate area design is necessary. ITU-R P. 1238 propose general propag... [more] AP2017-79
pp.59-64
AP 2016-08-23
11:20
Nagasaki Nagasaki Univ. A study on Radio Wave Propagation indoor using 920MHz Band
Gennma Hattori, Takuya Wadaka, Yasuhiro Tsunemitsu, Toshiyuki Maeyama (Takushoku Univ.), Toshiyasu Tanaka (MWF) AP2016-83
The spread of IoT device requires appropriate wireless area design.Especially in IoT device it is often used indoors is ... [more] AP2016-83
pp.85-90
AP 2016-01-14
13:45
Tokyo Takushoku University, Hachiouji Campus Propagation characteristics in farm monitoring system at 928MHz band
Suguru Minamikawa, Toshiyuki Maeyama, Masanori Takeshita, Takashi Minohara, Takehiro Takahashi (Takushoku Univ.) AP2015-172
In recent years, the sensor network using 920MHz band wireless communication advances by IoT/M2M inflation. In the most ... [more] AP2015-172
pp.27-32
AP 2016-01-15
14:05
Tokyo Takushoku University, Hachiouji Campus A study on using Massive-MIMO by Dual-Porarized MIMO Antena
Takuya Wadaka, Genma Hattori, Lige Cheng (Takushoku Univ.), Seiji Nishi (MWF), Toshiyuki Maeyama (Takushoku Univ.) AP2015-183
In 5th Generation Mobile Communication System (5G) which is a next-generation wireless communication system, Massive MIM... [more] AP2015-183
pp.89-94
AP 2015-07-30
11:25
Hokkaido Wakkanai Sougou Bunka Center Interference Evaluation of Millimeter Wave Band Massive-MIMO Equipped with by a Mobile Terminal
Takuya Wadaka, Yasuhiro Tsunemitsu, Toshiyuki Maeyama (Takushoku Univ.) AP2015-42
Massive-MIMO communication using the millimeter waves has been considered as the fifth generation mobile communication s... [more] AP2015-42
pp.15-20
RCC, ASN, RCS, NS, SR
(Joint)
2015-07-29
09:00
Nagano JA Naganoken Bldg. A study of energy problems in M2M device
Suguru Minamikawa, Tatsuya Kobayashi, Fumiya Imamura, Toshiyuki Maeyama, Hitoshi Sasaki, Mari Abe (Takushoku Univ.) ASN2015-20
M2M (Machine to Machine) is system that has possible to collect various information without the intervention of human by... [more] ASN2015-20
pp.1-5
SANE, SAT
(Joint)
2015-02-19
14:55
Okinawa Okinawaken Shichoson Jichikaikan A study of onboard digital beam forming antenna for maritime broadband communications satellite
Masataka Hayashi (Takushoku Univ.), Hiroyuki Tsuji, Teruaki Orikasa, Amane Miura (NICT), Toshiyuki Maeyama (Takushoku Univ.) SAT2014-67
 [more] SAT2014-67
pp.97-102
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