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All Technical Committee Conferences  (Searched in: All Years)

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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 31  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, NS
(Joint)
2022-12-16
15:50
Aichi Nagoya Institute of Technology, and Online
(Primary: On-site, Secondary: Online)
[Invited Lecture] Standardization of NR network-controlled repeater in 3GPP and research on coverage expansion techniques in millimeter-wave bands
Takeo Ohseki, Ryochi Kataoka, Masahiro Takigawa, Taishi Watanabe, Yoshiaki Amano (KDDI Research) NS2022-149 RCS2022-207
(To be available after the conference date) [more] NS2022-149 RCS2022-207
p.87(NS), p.98(RCS)
RCS, AP, UWT
(Joint)
2022-11-17
10:20
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
A study on relaying achieving low latency and high capacity in the millimeter wave bands
Masahiro Takigawa, Ryochi Kataoka, Takeo Ohseki, Taishi Watanabe, Yoshiaki Amano (KDDI Research, Inc.) RCS2022-176
This paper evaluates the link-level throughput characteristics when Line-of-Sight MIMO(LoS-MIMO) is applied between a re... [more] RCS2022-176
pp.124-129
RCS 2022-10-27
12:30
Ehime Ehime University, and online
(Primary: On-site, Secondary: Online)
[Invited Lecture] Research Activities for Deploying Cell-Free Massive MIMO Systems
Masaaki Ito (KDDI Research/USC), Shunsuke Kamiwatari, Noboru Osawa, Issei Kanno, Yoshiaki Amano (KDDI Research) RCS2022-132
In cell-free massive MIMO systems, a massive number of distributed antennas cooperate with each other and communicate wi... [more] RCS2022-132
p.25
MIKA
(3rd)
2022-10-13
11:10
Niigata Niigata Citizens Plaza
(Primary: On-site, Secondary: Online)
[Poster Presentation] Basic Performance Evaluation of Low Latency and High Capacity Relay Technology in the Millimeter Wave Band
Ryochi Kataoka, Masahiro Takigawa, Takeo Ohseki, Taishi Watanabe, Yoshiaki Amano (KDDI Research)
 [more]
AP 2022-06-16
14:25
Tokyo Kikai-Shinko-Kaikan Bldg.
(Primary: On-site, Secondary: Online)
Development of automotive 5G throughput simulator
Kazumasa Sakurai (SOKEN), Takuya Sawaya (TMC), Yoshiaki Amano (KDDI Research), Yuki Shida (KDDI) AP2022-32
(To be available after the conference date) [more] AP2022-32
pp.17-21
RCS 2022-06-15
09:55
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
Simulation Evaluation of Millimeter Wave Cell Free massive MIMO for Realistic Deployment Environment
Shunsuke Kamiwatari, Issei Kanno, Takahiro Hayashi, Yoshiaki Amano (KDDI Research, Inc.) RCS2022-25
Cell-free massive MIMO (CF mMIMO) is a candidate elemental technology for Beyond 5G. In this paper, we report the result... [more] RCS2022-25
pp.7-12
AP 2022-03-10
10:55
Online Online AP2021-183 From microwaves to terahertz waves, the directivity and gain were investigated by electromagnetic field simulation when ... [more] AP2021-183
pp.12-16
SAT 2021-10-07
14:20
Online Online PROPOSAL FOR A USER-CENTRIC RAN ARCHITECTURE TOWARDS BEYOND 5G
Kosuke Yamazaki, Takeo Ohseki, Yoshiaki Amano, Takahide Murakami, Hiroyuki Shinbo, Yoji Kishi (KDDI Research, Inc.) SAT2021-43
In this paper, we present a novel RAN architecture for Beyond 5G called “user-centric (UC) RAN architecture,” which prov... [more] SAT2021-43
pp.4-10
AP 2021-06-17
13:50
Online Online Prototype of Multi band orthogonal polarization and Angle MIMO antenna in cellular system
Masayuki Nakano, Yoshiaki Amano (KDDI Research, Inc) AP2021-21
We devised a small, low-profile multi-band MIMO antenna for cellular band such as indoor base
stations that supports m... [more]
AP2021-21
pp.13-18
EID, ITE-IDY, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2021-01-29
10:10
Online Online Effect of Doping Self-assembled Dendrimer to Thick Liquid Crystal for Microwave-band Phase Shifters
Yoichi Murakami, Yosei Shibata, Hiroyasu Sato, Takahiro Ishinabe (Tohoku Univ.), Hiromi Matsuno, Yoshiaki Amano (KDDI), Qiang Chen, Hideo Fujikake (Tohoku Univ.)
 [more]
SR 2020-11-18
10:00
Online Online A Study on Forecasting of Available Spectrum Resources for Sharing using Envelope Extraction and Machine Learning
Tatsuya Nagao, Takahiro Hayashi, Yoshiaki Amano (KDDI Research) SR2020-22
In recent years, the demand for spectrum resources has been increasing, which has raised expectations for dynamic spectr... [more] SR2020-22
pp.1-4
RCS, SR, SRW
(Joint)
2020-03-04
15:00
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
[Invited Talk] A Proposal of Dynamic Spectrum Sharing Architecture between different radio services and 5G system
Kosuke Yamazaki, Takahiro Hayashii, Yoshiaki Amano, Yoji Kishi (KDDI Research), Takeo Fujii, Koichi Adachi (UEC), Hiroshi Harada, Kei-ichi Mizutani (Kyoto Univ.), Jun-ichi Takada, Kentaro Saito (TIoT), Yasushi Fuwa, Osamu Takyu (Shinshu Univ.), Ryo Sawai, Ryota Kimura (SONY), Satoshi Baba, Hironori Kakefuda (NDK), Hideki Kanemoto, Takeshi Yasunaga (Panasonic) RCS2019-345 SR2019-120 SRW2019-66
To achieve highly efficient spectrum usage, we propose a novel spectrum management scheme to realize Dynamic Spectrum Sh... [more] RCS2019-345 SR2019-120 SRW2019-66
pp.137-142(RCS), pp.41-46(SR), pp.35-40(SRW)
AP, WPT
(Joint)
2014-10-16
12:55
Hokkaido Hokkaido University, Clark Memorial Student Center Frequency Characteristics of Path Loss in Street Cell Environment
Toru Kitayabu, Hiromi Matsuno, Yoshiaki Amano, Masayuki Nakano, Akira Yamaguchi (KDDI Labs.) AP2014-116
In this paper, path losses are measured in 3.5 GHz, 870 MHz and 2115 MHz, respectively. The measurement results are comp... [more] AP2014-116
pp.43-47
AP, WPT
(Joint)
2014-10-17
13:55
Hokkaido Hokkaido University, Clark Memorial Student Center Experimental Investigation of Glass Loss for Indoor-to-outdoor Propagation
Hiromi Matsuno, Toru Kitayabu, Yoshiaki Amano, Masayuki Nakano, Akira Yamaguchi (KDDI R&D Labs) AP2014-125
In this paper, the experimental evaluation of indoor-to-outdoor propagation in 3.5GHz, 2.115GHz, and 870MHz is employed.... [more] AP2014-125
pp.93-97
AP, WPT
(Joint)
2014-10-17
14:20
Hokkaido Hokkaido University, Clark Memorial Student Center Field Experiments on MIMO Antennas for Small Cell Base Stations in 3.5GHz Band
Yoshiaki Amano, Toru Kitayabu, Hiromi Matsuno, Masayuki Nakano, Akira Yamaguchi (KDDI R&D) AP2014-126
Small cells have attracted a lot of attention to improve data throughput and frequency utilization efficiency for the 4t... [more] AP2014-126
pp.99-103
RCS, AP
(Joint)
2013-11-22
11:35
Shimane Matsue Terrsa Performance Evaluation of Distributed MIMO Antenna for Mobile Terminals
Tomohiro Sato, Masaharu Takahashi, Koichi Ito (Chiba Univ.), Yoshiaki Amano, Masayuki Nakano, Akira Yamaguchi (KDDI Labs) AP2013-121
Recently, MIMO transmission systems are in practical use for realizing high speed and reliable wireless communications. ... [more] AP2013-121
pp.123-126
AP
(2nd)
2012-12-21
15:00
Okinawa KDDI Naha Building 6F Study of Measurement Method of Transmitter Characteristics of Active Array Antenna for Cellular Base Station
Yukitaka Takahashi, Keisuke Sato, Ichiro Oshima (Denkikogyo), Yoshiaki Amano, Toru Kitayabu, Masayuki Nakano (KDDI Lab.)
 [more]
AP
(2nd)
2012-12-21
16:00
Okinawa KDDI Naha Building 6F A Study on Probe Antenna Reduction of a MIMO Fading Emulator
Yoshiaki Amano, Masayuki Nakano, Akira Yamaguchi (KDDI R&D)
 [more]
AP, SAT
(Joint)
2012-07-25
14:50
Hokkaido Hokkaido Univ. Evaluation of Ring-Omni Cells for Next Generation Cellular System
Masayuki Nakano, Takahiro Hayashi, Yoshiaki Amano (KDDI R&D Labs.) AP2012-41
This paper shows Ring-Omni Cell are proposed using the antenna pattern on vertical plane of base station antenna, and ev... [more] AP2012-41
pp.63-68
AP, SAT
(Joint)
2010-07-21
11:15
Hokkaido Kitami Inst. Tech. Field Experiments of MIMO Antenna Attached on Small Ground Plane with Human Effect -- Evaluation on Spatial and Polarized Forward-link MIMO in Suburban Area --
Yoshiaki Amano, Masayuki Nakano, Hiroyasu Ishikawa (KDDI R&D), Tomoyuki Onoda (KDDI), Masaharu Takahashi, Koichi Ito (Chiba Univ.) AP2010-41
 [more] AP2010-41
pp.19-24
 Results 1 - 20 of 31  /  [Next]  
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