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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 17件中 1~17件目  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2018-04-23
11:20
Yamaguchi Hotel New Tanaka, Yuda Onsen Optimization of Beam Patterns for Analog Beamforming of Single User Massive MIMO Transmissions
Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.) RCS2018-5
This paper proposes optimal beam patterns of analog beamforming for SU (Single User) massive MIMO (Multi-Input Multi-Out... [more] RCS2018-5
pp.25-30
AP, MW
(Joint)
2017-09-21
14:25
Saitama Saitama University A Study of Quasi-Millimeter Wave Integrated Front-End Module Including Antenna and Filter
Yasunori Suzuki, Kei Satoh, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO), Takana Kaho, Yo Yamaguchi, Maki Arai, Hiroyuki Shiba (NTT) MW2017-69
 [more] MW2017-69
pp.5-9
AP, MW
(Joint)
2017-09-21
14:50
Saitama Saitama University A Study of Quasi-Millimeter Wave Frontend ICs and Modules
Takana Kaho, Yo Yamaguchi, Maki Arai, Hiroyuki Shiba (NTT), Yasunori Suzuki, Kei Sato, Hiroshi Okazaki, Shoichi Narahashi (NTT DOCOMO) MW2017-70
Application of Massive MIMO and beamforming technology using array antennas in the quasi-millimeter wave band is being ... [more] MW2017-70
pp.11-15
MW 2016-12-15
10:00
Kanagawa National Defense Academy Characteristic of Non-specular Scattering on Outside Surface of Constructions at 25GHz
Hao Liu, Jun-ichi Takada, Kentaro Saito (Tokyo Tech), Yo Yamaguchi, Maki Arai, Takana Kaho (NTT) MW2016-135
In order to achieve the high speed wireless communications for the 5th generation mobile networks, quasi-millimeter wave... [more] MW2016-135
pp.19-23
WPT 2016-03-08
13:10
Kyoto Kyoto Univ. Uji Campus Study of Wireless Power Transfer at 24 GHz Band
Seishiro Kojima (Kyoto Univ.), Yo Yamaguchi, Maki Arai (NTT), Tomohiko Mitani, Naoki Shinohara (Kyoto Univ.) WPT2015-91
Recently, WPT (wireless power transfer) technique have attracted attention. In addition, research of wireless communicat... [more] WPT2015-91
pp.81-84
WPT, MW 2015-04-16
16:40
Tokyo Kikai-Shinko-Kaikan Bldg. Development of MMIC Rectifier for Wireless Power Transfer Application in High Speed Wireless Communication System at 60 GHz Band
Seishiro Kojima, Naoki Shinohara, Tomohiko Mitani (Kyoto Univ), Tomohiro Seki, Maki Arai (NTT) WPT2015-7 MW2015-7
Recently, techniques of wireless power transfer have been watched. Previous studies proposed a system that wireless powe... [more] WPT2015-7 MW2015-7
pp.33-37
AP 2015-02-20
12:40
Hyogo Chusho-kigyou center at Amagasaki-City [Invited Lecture] Proposal of fast weight generation method for hand jiggling compensation in short-range MIMO transmission
Kazumitsu Sakamoto, Ken Hiraga, Maki Arai, Tomohiro Seki, Toshimitsu Tsubaki, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2014-203
In non-contact high speed data transfer applying short-range multiple-input multiple-output (SR-MIMO) transmission in mi... [more] AP2014-203
pp.89-94
AP, WPT
(Joint)
2014-10-17
10:10
Hokkaido Hokkaido University, Clark Memorial Student Center Experimental evaluation of broadband transmission performance and antenna displacement tolerance in short-range MIMO simple decoding
Kazumitsu Sakamoto, Ken Hiraga, Maki Arai, Tomohiro Seki, Toshimitsu Tsubaki, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2014-121
We have proposed a simple decoding method for short-range multiple-input multiple-output (SR-MIMO) transmission that can... [more] AP2014-121
pp.73-78
AP, WPT
(Joint)
2014-10-17
14:45
Hokkaido Hokkaido University, Clark Memorial Student Center A study of spatial division transmission utilizing two-ray ground reflection model
Ken Hiraga, Kazumitsu Sakamoto, Maki Arai, Tomohiro Seki, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2014-127
(To be available after the conference date) [more] AP2014-127
pp.105-110
RCS, AP
(Joint)
2013-11-21
11:25
Shimane Matsue Terrsa Study on Alignment Tolerance in Millimeter-Wave MIMO Transmission Using Orthogonal Directivities
Maki Arai, Tomohiro Seki, Ken Hiraga, Kazumitsu Sakamoto, Hideki Toshinaga, Tadao Nakagawa (NTT) AP2013-109
 [more] AP2013-109
pp.55-60
RCS 2012-04-20
15:20
Kyoto Kyoto Univ. Optimization of Base Station Antenna Directivity for Base Station Cooperation Cellular Systems
Doppo Sugimura, Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Tech), Takayuki Sotoyama (Panasonic Mobile Communications), Masayuki Hoshino (Panasonic) RCS2012-20
Base Station Cooperation (BSC) is one of the key technologies for next generation cellular systems.In this paper, we wil... [more] RCS2012-20
pp.115-120
AP 2012-03-15
10:30
Shizuoka Chuo public hall (Atami City) Antenna Design for Multi-User MIMO to be Robust against Channel Feedback Error
Hajime Nakamichi, Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Tech), Takayuki Sotoyama (Panasonic Mobile Communications), Masayuki Hoshino (Panasonic) AP2011-199
Recently, multiuser MIMO communication technique has attracted much attention because of their potential for increasing ... [more] AP2011-199
pp.1-6
AP, RCS
(Joint)
2011-11-16
14:55
Aichi Nagoya Congress Center Optimization of MIMO Antenna Directivities and Derivation of Current Distributions by Using Spherical Mode Expansion
Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.), Yoshio Koyanagi, Takayuki Sotoyama (Panasonic Mobile Communications) AP2011-99
This paper proposes a new design method based on spherical mode expansion
to optimize MIMO antenna directivities
and ... [more]
AP2011-99
pp.57-62
AP, MW
(Joint)
2011-03-03
14:30
Ibaraki Ibaraki Univ. A Study on Vertical Pattern of Base Station Antennas for Base Station Cooperation System
Doppo Sugimura, Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.), Takayuki Sotoyama (Panasonic Mobile Comm Co.,Ltd.) AP2010-182
Base Station Cooperation (BSC) is one of the key technologies for next generation cellular system.The BSC can improve po... [more] AP2010-182
pp.49-54
AP, MW
(Joint)
2011-03-03
14:55
Ibaraki Ibaraki Univ. A Theoretical Study on Design of Spatial Fading Emulator Based on Clarke's Model
Daisuke Matsuo, Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.) AP2010-183
In this paper, we describe a design method of a spatial fading emulator based on Clarke's model which is one of the OTA(... [more] AP2010-183
pp.55-60
RCS, AP
(Joint)
2009-11-26
13:25
Tokyo Tokyo Inst. of Tech. Channel Capacity of Basestation Cooperation Multi-user MIMO based on Block Diagonalization
Kei Sakaguchi, Naoki Kusashima, Maki Arai, Kiyomichi Araki (Tokyo Inst. of Tech.) AP2009-120 RCS2009-142
Basestation cooperation MIMO, also known as distributed MIMO, is a MIMO transmission technology, where some adjacent bas... [more] AP2009-120 RCS2009-142
pp.7-12(AP), pp.55-60(RCS)
AP 2009-10-08
15:10
Shizuoka Shizuoka University Derivation of analytical eigenvalues for basestation cooperation MIMO channel
Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.), Takayuki Sotoyama (Panasonic Mobile Comm Co.,Ltd.) AP2009-115
Base Station Cooperation (BSC) MIMO is one of the important technologies for future cellular networks. In this paper, a ... [more] AP2009-115
pp.73-78
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