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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SANE | 2023-11-13 13:30 |
Chiba | Chiba Univ. (Nishi-Chiba Campus) (Primary: On-site, Secondary: Online) |
Output Trends from QZSS Positioning Signal (L1C/A) and Disaster Crisis Report (L1S) Receivers & Observation of Carrier-to-Noise Ratio (CNR) Keiko Shimazu (AIIT), Michi Hamazhita, Taku Yamamoto, Soma Nishimura, Toyomo Shibata, Sora Masaki (TMU), Yuno Sudo (YNU), Akira Yamaguchi, Ryotaro Oda, Kohei Yoshikawa (AIIT)  SANE2023-53 |
We organized the trends when the signal of the DC report (Disaster Crisis Report) broadcast by the QZSS (Quasi-Zenith Sa... [more] | SANE2023-53 pp.34-39 |
| AP | 2023-04-14 14:20 |
Osaka | Osaka Univ. (Primary: On-site, Secondary: Online) |
Investigation of reflection parameters of lunar surface. Kazunori Takeuchi, Akira Yamaguchi, Akira Akasaka, Yoshio Takeuchi, Hiroyuki Shinbo (KDDI Research, Inc.) AP2023-5 |
To estimate radio communication quality on lunar surface, the surface reflection parameters of the lunar are required. F... [more] | AP2023-5 pp.22-27 |
| RCS, SR, SRW (Joint) |
2023-03-03 09:00 |
Tokyo | Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Large-scale Simulation for Integrated Demonstration of Management Technology in Advanced 5G Network Haruhisa Hirayama, Megumi Shibuya, Akira Yamaguchi, Yu Tsukamoto, Takahide Murakami, Hiroyuki Shinbo (KDDI Research) RCS2022-281 |
In the advanced 5G era around 2025, mobile traffic with various required qualities such as high capacity, ultra-low late... [more] | RCS2022-281 pp.185-189 |
| 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 |
| 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 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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