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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 25  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SRW, SeMI, CNR
(Joint)
2022-11-24
13:20
Tochigi Epinard Nasu
(Primary: On-site, Secondary: Online)
Reflected Wave Power Calculation Method based on Wavelength and Reflecting Object Size -- Preliminary Verification in a Factory Environment --
Azril Haniz, Hirokazu Sawada, Hikaru Kawasaki, Kazuo Ibuka, Fumihide Kojima, Takeshi Matsumura (NICT), Kensuke Matsui, Genki Hosokawa (YAZAKI Corporation), Yasuyuki Yanagi (Yazaki Energy System Corporation), Tadahide Kunitachi (YAZAKI Corporation)
 [more]
SRW 2022-08-22
10:15
Online Online Analysis of 2.4 GHz Band Received Power Fluctuation in a Factory Environment
Azril Haniz, Hirokazu Sawada, Hikaru Kawasaki, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima (NICT), Kensuke Matsui, Genki Hosokawa (YAZAKI Corporation), Yasuyuki Yanagi (Yazaki Energy System Corporation), Tadahide Kunitachi (YAZAKI Corporation) SRW2022-9
In this paper, analysis of a long term radio propagation channel measurement to investigate the temporal fluctuations of... [more] SRW2022-9
pp.2-7
CS 2022-07-15
10:50
Kagoshima Yakushima Environmental and Cultural Village Center
(Primary: On-site, Secondary: Online)
Trapezoidal Block Householder Reflector and Its Application to Precoding
Hikaru Kawasaki, Takeshi Matsumura (NICT) CS2022-32
Orthonormalization like singular value decomposition and QR decomposition is closely related to solution representation ... [more] CS2022-32
pp.83-88
SRW 2022-06-20
10:30
Tokyo Kikai-Shinko-Kaikan Bldg.
(Primary: On-site, Secondary: Online)
Delay Profile Measurement and Channel Model Study for Factory Environment
Hirokazu Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, FUmihide Kojima, Takeshi Matsumura (NICT), Kensuke Matsui, Kotaro Ikeda, Genki Hosokawa, Takuto Kurose (YAZAKI), Yasuyuki Yanagi (YAZAKI ES), Tadahide Kunitachi (YAZAKI) SRW2022-1
 [more] SRW2022-1
pp.1-5
RCS, SR, SRW
(Joint)
2022-03-02
13:30
Online Online Trial Results of Multipath TCP in Heterogeneous Mobile Network
Hikaru Kawasaki, Kazuo Ibuka, Fumihide Kojima, Matsumura Takeshi (NICT) RCS2021-265
This paper reports the results of the field trials using a testbed to investigate the effectiveness of inter-operator li... [more] RCS2021-265
pp.74-79
SRW 2021-06-21
09:00
Online Online Analysis of 920MHz band received power fluctuation in a factory environment
Hirokazu Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, Fumihide Kojima, Takeshi Matsumura (NICT), Kotaro Ikeda, Kensuke Matsui, Takuto Kurose (YAZAKI), Yasuyuki Yanagi (YAZAKI ES), Tadahide Kunitachi (YAZAKI) SRW2021-1
 [more] SRW2021-1
pp.1-6
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
CS 2020-11-05
15:10
Online Online + Central Community Center, Nonoichi Community Center
(Primary: Online, Secondary: On-site)
[Invited Talk] Semi-Blind Channel Estimation using Pilot Subcarriers and Subspace Approach in Orthogonal Precoded OFDM
Hikaru Kawasaki, Takeshi Matsumura, Fumihide Kojima (NICT) CS2020-50
Orthogonal precoded (OP)-orthogonal frequency-division multiplexing (OFDM) is an OFDM scheme with an invertible precodin... [more] CS2020-50
pp.18-23
CS 2020-11-06
13:55
Online Online + Central Community Center, Nonoichi Community Center
(Primary: Online, Secondary: On-site)
[Invited Lecture] Technology for Improving Connectivity with Local Networks Assuming Local 5G and Its Demonstration
Takeshi Matsumura, Kazuo Ibuka, Hikaru Kawasaki, Fumihide Kojima (NICT) CS2020-61
Local 5G is expected as a system that enables a unique and advanced local network according to respective local demands.... [more] CS2020-61
pp.69-74
SR, NS, SeMI, RCC, RCS
(Joint)
2020-07-10
13:55
Online Online Field Trial of Millimeter Wave Local Network System based on RoF Technology in Railway Environment
Hikaru Kawasaki, Kazuo Ibuka, Azril Haniz, Takeshi Matsumura, Fumihide Kojima (NICT), Daiki Shibahara, Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima, Shimpei Toyoda, Youichi Watanabe, Takashi Sugawara (JR-EAST), Shogo Ogawa, Daisuke Yamaguchi, Koki Iwamoto, Kazuki Nakamura (RTRI) RCS2020-75
For mobile vehicles like trains and automobiles, it is important for local operators to efficiently deploy linear cells ... [more] RCS2020-75
pp.99-104
RCS 2020-04-23
10:00
Online Online Development of Millimeter Wave Local Network System with Service Area Extension based on RoF Technology
Takeshi Matsumura, Hikaru Kawasaki, Kazuo Ibuka, Fumihide Kojima (NICT) RCS2020-1
Currently, Local 5G (5th Generation Communication System), which provides private services within limited sites such as ... [more] RCS2020-1
pp.1-6
RCS 2020-04-23
10:35
Online Online Demonstration Experiment of Virtual Pre-Connection Scheme for Trains with Millimeter Wave Railway Linear Cell
Kazuo Ibuka, Hikaru Kawasaki, Azril Haniz, Takeshi Matsumura, Fumihide Kojima (NICT), Daiki Shibahara, Kenichiro Kamohara, Fumitoshi Abe, Reiji Ishima (JR-EAST), Shogo Ogawa, Daisuke Yamaguchi, Koki Iwamoto, Kazuki Nakamura (RTRI) RCS2020-2
In the fifth generation mobile communication system (5G), the use of small cells in the super high frequency (SHF) band ... [more] RCS2020-2
pp.7-11
CS, CAS 2020-02-28
09:00
Kumamoto   Semi-Blind Channel Estimation in Orthogonal Precoded OFDM
Hikaru Kawasaki, Takeshi Matsumura, Fumihide Kojima (NICT) CAS2019-113 CS2019-113
Orthogonal precoded orthogonal frequency-division multiplexing (OFDM) is an OFDM scheme with an invertible precoding. As... [more] CAS2019-113 CS2019-113
pp.87-93
RCS 2019-10-24
15:25
Kanagawa Yokosuka Research Park [Invited Lecture] R&D on Cooperative Control Schemes Suitable for Local 5G
Hikaru Kawasaki, Kazuo Ibuka, Homare Murakami, Kentaro Ishizu, Takeshi Matsumura, Fumihide Kojima (NICT) RCS2019-188
The fifth-generation mobile system (5G) is expected to be utilized as a communication infrastructure for a variety of em... [more] RCS2019-188
pp.57-62
CS 2019-07-05
09:25
Kagoshima Amami City Social Welfare Center Pilot Subcarriers in Orthogonal Precoded OFDM
Hikaru Kawasaki, Takeshi Matsumura, Kentaro Ishizu, Fumihide Kojima (NICT) CS2019-40
Orthogonal precoded orthogonal frequency-division multiplexing (OFDM) is a OFDM scheme with an invertible precoding. As ... [more] CS2019-40
pp.121-126
CAS, CS 2019-03-08
13:00
Kanagawa Shonan Institute of Technology A Study on PAPR Reduction of DFT-s-OFDM Signals via Phase Rotation
Hikaru Kawasaki, Kentaro Ishizu, Fumihide Kojima (NICT) CAS2018-141 CS2018-109
DFT-s-OFDM has been adopted in the 4G LTE uplink (UL) which is induced by DFT-precoding to reduce high peak-to-average-p... [more] CAS2018-141 CS2018-109
pp.15-20
RCS, SR, SRW
(Joint)
2019-03-08
10:40
Kanagawa YRP [Invited Lecture] NICT's R&D toward flexible utilization of self-operated wireless systems in 5G era
Kentaro Ishizu, Homare Murakami, Kazuo Ibuka, Takeshi Matsumura, Stanislav Filin, Hikaru Kawasaki, Fumihide Kojima (NICT) SRW2018-71
 [more] SRW2018-71
pp.67-72
CS 2018-07-12
13:30
Okinawa Eef Information Plaza (Kumejima Is.) [Invited Talk] An Improvement of OP-DFT-s-OFDM for Spectrum Sharing
Hikaru Kawasaki, Kentaro Ishizu, Fumihide Kojima (NICT) CS2018-28
DFT-s-OFDM has been adopted in the 4G LTE uplink which is induced by DFT-precoding to reduce high peak-to-average-power ... [more] CS2018-28
pp.77-82
CS, CAS 2018-03-13
09:20
Fukuoka Nishijin Plaza, Kyushu University A Proposal of Orthogonal Precoded DFT-s-OFDM for Spectrum Sharing
Hikaru Kawasaki, Kentaro Ishizu, Fumihide Kojima (NICT) CAS2017-146 CS2017-100
DFT-s-OFDM has been adopted in the 4G LTE uplink which is induced by DFT-precoding to reduce high peak-to-average-power ... [more] CAS2017-146 CS2017-100
pp.75-80
SRW 2017-11-14
11:15
Tokyo NICT (Koganei) [Invited Lecture] Efficient Radio Access for Massive Machine-Type Communication
Masafumi Moriyama, Kenichi Takizawa, Masayuki Oodo, Hayato Tezuka, Hikaru Kawasaki, Changwoo Pyo, Homare Murakami, Kentaro Ishidu, Fumihide Kojima (NICT) SRW2017-56
 [more] SRW2017-56
pp.51-56
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