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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 59  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2022-02-17
09:50
Online Online An experimental investigation of the reflection characteristics of lunar surface
Feng Lu, Kazunori Takeuchi, Akira Yamaguchi, Hiroyuki Shinbo (KDDI Research) AP2021-159
Providing communication areas on the lunar surface for exploration of the lunar surface etc. in the 2030s has been consi... [more] AP2021-159
pp.7-10
RCS, SR, SRW
(Joint)
2019-03-06
11:20
Kanagawa YRP An Experimental Study of MmWave Access Points Allocation Patterns inside the Passenger Car of a High Speed Train
Yoshio Kunisawa, Akira Yamaguchi, Feng Lu, Kazunori Takeuchi, Hiroyuki Shinbo (KDDI Research, Inc.) SR2018-123
This paper reports the investigation results of MmWave Access Points (MAPs) deployment method in order to provide exceed... [more] SR2018-123
pp.17-22
SR 2018-05-24
11:30
Tokyo Tokyo big sight A Study on Reduction Method on Radio Resource Control Signal Amount of D2D Relay Communication
Ryochi Kataoka, Koichiro Kitagawa, Bingxuan Zhao, Katsuo Yunoki, Hiroyuki Shinbo, Akira Yamaguchi, Kazunori Takeuchi (KDDI Research) SR2018-2
In 5G systems, the utilization of high frequency band that can use a wide bandwidth is expected. Generally, there is a p... [more] SR2018-2
pp.7-12
RCS, SR, SRW
(Joint)
2018-02-28
17:05
Kanagawa YRP Proposed method and Experiment results for selection of mmWave AP in high speed train
Tadayuki Fukuhara, Akira Yamaguchi, Lu Feng, Hiroyuki Shinbo (KDDI Research) SR2017-118
In this paper, we propose a new method for selecting millimeter wave access points (mmWave APs) in order to realize high... [more] SR2017-118
pp.41-47
SR 2016-10-28
13:00
Osaka Osaka Univ. Nakanoshima Center Feature detection scheme using Cyclic Prefix (CP) in OFDM -- Analytical approach and its results of Output S/N at feature detector --
Kanshiro Kashiki, Tomoki Sada, Akira Yamaguchi (KDDI Research) SR2016-70
From the viewpoint of the efficient use of frequency resources in mobile radio service, authors have been investigating ... [more] SR2016-70
pp.85-92
SR, SRW
(Joint)
2016-05-17
10:45
Overseas Hotel Lasaretti, Oulu, Finland [Invited Lecture] PoC of mmWave (40 and 60 GHz) Integrated 5G Heterogeneous Networks
Makoto Ando (Tokyo Institute of Tech.), Toru Taniguchi (Japan Radio), Makoto Noda (Sony), Akira Yamaguchi (KDDI R&D Lab.), Kei Sakaguchi (Fraunhofer Heinrich-Herz-Institute) SR2016-13
 [more] SR2016-13
pp.47-50
EST 2015-09-03
10:30
Okinawa Oohama-Nobumoto-Kinenkan, Ishigaki Island, Okinawa, Japan Statistical Analysis of Rain Toward Route Switching of Millimeter-Wave Wireless Network
Takuichi Hirano, Jiro Hirokawa, Makoto Ando (Tokyo Tech.), Riichiro Nagareda, Akira Yamaguchi (KDDI Labs.), Hitoshi Nagahori, Toru Taniguchi (JRC) EST2015-54
Statistic properties of rainfall in Tokyo are presented in this report. Average rain duration as a function of rain rate... [more] EST2015-54
pp.7-11
ASN 2015-05-15
14:30
Tokyo Tokyo Denki University [Poster Presentation] Investigation of Power Saving Topologies in Wireless Sensor Networks Considering Packet Collision and Link Quality
Sho Sasaki, Akira Yamaguchi (Toyohashi Tech.), Hiroaki Taka (Future Univ. Hakodate), Yuichi Miyaji, Hideyuki Uehara (Toyohashi Tech.) ASN2015-18
A large number of battery-driven sensor nodes are deployed to operate a wireless sensor network, and thus power saving o... [more] ASN2015-18
pp.89-94
NS, IN
(Joint)
2015-03-03
10:50
Okinawa Okinawa Convention Center A Study of Routing Algorithm Based on Quality Prediction for Millimeter-Wave Wireless Links
Riichiro Nagareda, Hiroshi Hanano, Akira Yamaguchi (KDDI Labs.) NS2014-233
Mobile operators usually use wired links as backhauls which connect base stations (BSs) and core networks (CNs). However... [more] NS2014-233
pp.325-330
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
AP
(2nd)
2014-05-15
- 2014-05-16
Ishikawa The Kanazawa Theatre A method for predicting rain attenuation in millimeter-wave wireless mesh networks
Riichiro Nagareda, Hiroshi Hanano, Akira Yamaguchi (KDDI R&D Labs.), Hung Vu Le, Takuichi Hirano, Makoto Ando (Tokyo Tech.)
MilliMeter-Wave (mmW) backhaul networks flexibly expand the service area of cellular system where dense small cells are ... [more]
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
ASN, IPSJ-UBI 2013-05-16
16:40
Kumamoto Kumamoto University [Poster Presentation] Verification of the Regression Equation for Predicting the Psychological Distance of Interpersonal Relationships
Akira Yamaguchi (Toyohashi Univ. of Tech.), Manabu Yoshida, Miyuki Imada, Sunyong Kim, Masato Matsuo (NTT), Hideyuki Uehara (Toyohashi Univ. of Tech.) ASN2013-25
The purpose of this study is quantification of the psychological distance on interpersonal relationships for supporting ... [more] ASN2013-25
pp.129-134
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]
ED, LQE, CPM 2012-11-29
11:55
Osaka Osaka City University High growth rate AlN and AlGaN on large diameter Si substrate(6inch & 8inch)
Hiroki Tokunaga, Akinori Ubukata, Yoshiki Yano, Yuya Yamaoka, Akira Yamaguchi, Toshiya Tabuchi (TNSC), Kou Matumoto (TNEMC) ED2012-69 CPM2012-126 LQE2012-97
 [more] ED2012-69 CPM2012-126 LQE2012-97
pp.17-20
SR 2012-01-26
13:00
Kagoshima Kagoshima Experiment Verification of WLAN Throughput Estimation Method Regarding CSMA/CA
Yuichi Imagaki, Kanshiro Kashiki, Takashi Fujimoto, Kosuke Yamazaki, Akira Yamaguchi (KDDI R&D Labs., Inc.) SR2011-78
A multi-mode terminal that equips some wireless modules always selects Wi-Fi system if that has a policy of selecting Wi... [more] SR2011-78
pp.1-7
AP, RCS
(Joint)
2011-11-17
10:35
Aichi Nagoya Congress Center A study on MIMO antenna for mobile router
Yusuke Okoshi, Toshiyuki Maeyama (Takushoku Univ), Kosuke Yamazaki, Akira Yamaguchi (KDDI R&D Lab) AP2011-105
Mobile router is required to delivering low correlation and high isolation between antenna to install MIMO. In this pape... [more] AP2011-105
pp.91-96
AN, USN, SR, RCS
(Joint)
2010-10-27
15:00
Osaka Osaka University Analytical Study of Service Availability Improvement in Heterogeneous Radio Networks -- Experimental measurement of transmission quality and analysis of quality improvement --
Kanshiro Kashiki, Tadayuki Fukuhara, Akira Yamaguchi, Toshinori Suzuki (KDDI Labs) SR2010-46
From the viewpoint of service availability, which is an important evaluation factor in communication quality, we analyti... [more] SR2010-46
pp.41-48
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