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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| NS, RCS (Joint) |
2015-12-18 13:30 |
Ehime | Matsuyama Community Center | Wireless Backhaul for Train-type Moving Cell with Time-domain Beam-forming Atsushi Ohta, Yushi Shirato, Satoshi Kurosaki, Kazuki Maruta, Takuto Arai, Tatsuhiko Iwakuni, Ken Tanaka, Masataka Iizuka (NTT)  RCS2015-272 |
[more] | RCS2015-272 pp.169-174 |
| AP, RCS, WPT, SAT (Joint) |
2015-11-04 12:15 |
Okinawa | Okinawa Prefectural Museum & Art Museum | Transmission Performance Evaluation of Multiuser Massive MIMO Null-Space Expansion for Time Varying Channel Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka (NTT) RCS2015-198 |
Inter-user interference (IUI) caused by channel time variation reduces multiuser MIMO transmission capacity. Massive MIM... [more] | RCS2015-198 pp.49-54 |
| AP, RCS, WPT, SAT (Joint) |
2015-11-05 09:30 |
Okinawa | Okinawa Prefectural Museum & Art Museum | Multiuser Massive MIMO Exploiting First Eigenmode Transmission in Higher Frequency Bands Kazuki Maruta, Tatsuhiko Iwakuni, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka (NTT) RCS2015-205 |
Drastic improvements of transmission rate and system capacity are required towards 5th generation mobile communications ... [more] | RCS2015-205 pp.91-96 |
| AP, RCS, WPT, SAT (Joint) |
2015-11-06 14:00 |
Okinawa | Okinawa Prefectural Museum & Art Museum | [Invited Lecture]
Effective use of the First Eigen-modes on Massive MIMO communication in LOS environment Atsushi Ohta, Yushi Shirato, Kazuki Maruta, Takuto Arai, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) AP2015-150 RCS2015-239 |
[more] | AP2015-150 RCS2015-239 pp.231-236(AP), pp.293-298(RCS) |
| RCS, SAT (Joint) |
2015-08-18 09:30 |
Fukuoka | Fukuoka Univ. | High Efficient Spatial Division Multiplexing Technique with the First Eigen-mode Parallel Transmission on Millimeter Wave Band in LOS Environment
-- Basic Concept and Its Performance Evaluation -- Atsushi Ohta, Takuto Arai, Yushi Shirato, Kazuki Maruta, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2015-144 |
[more] | RCS2015-144 pp.73-78 |
| RCS, SAT (Joint) |
2015-08-18 09:55 |
Fukuoka | Fukuoka Univ. | High Efficient Spatial Division Multiplexing Technique with the First Eigen-mode parallel transmission on millimeter wave band in LOS environment
-- Effective channel feedback scheme -- Takuto Arai, Atsushi Ohta, Yushi Shirato, Kazuki Maruta, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2015-145 |
In the previous paper, the authors have discussed the practical Massive MIMO system in LOS environment where the base st... [more] | RCS2015-145 pp.79-84 |
| RCS, SAT (Joint) |
2015-08-18 15:30 |
Fukuoka | Fukuoka Univ. | Uplink Interference Suppression by MMSE-CMA Adaptive Array on Multicell Massive MIMO Systems Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Satoshi Kurosaki, Takuto Arai, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2015-154 |
This paper proposes uplink interference suppression scheme for multicell massive MIMO systems. Single frequency reuse is... [more] | RCS2015-154 pp.129-134 |
| RCS | 2015-06-24 15:45 |
Hokkaido | Hokkaido Univ. | Massive Antenna Periodical Offset Arrangement to Achieve Spatial Correlation Reduction Takuto Arai, Atsushi Ohta, Yushi Shirato, Kazuki Maruta, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2015-53 |
As key technologies for Massive Antenna Systems for Wireless Entrance (MAS-WE) exploiting line of sight channel characte... [more] | RCS2015-53 pp.43-48 |
| RCS | 2015-06-24 16:10 |
Hokkaido | Hokkaido Univ. | Effective Use of Spatial Dimension for Inter-user Interference suppression on Multiuser Massive MIMO under Time Varying Channel Environment Atsushi Ohta, Tatsuhiko Iwakuni, Kazuki Maruta, Yushi Shirato, Takuto Arai, Masataka Iizuka (NTT) RCS2015-54 |
The authors have proposed the Inter-user Interference (IUI) suppression scheme on Multiuser Massive MIMO which utilizes ... [more] | RCS2015-54 pp.49-54 |
| RCS | 2015-04-17 12:35 |
Oita | Yufuin, Yufugoukan | Continuous Beamforming Space Division Multiple Access and Frequency Domain Backoff Scheme on Massive Antenna Systems for Wireless Entrance Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Satoshi Kurosaki, Takuto Arai, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2015-16 |
This paper newly proposes Continuous Beamforming Space Division Multiple Access (CB-SDMA) on Massive Antenna Systems for... [more] | RCS2015-16 pp.83-88 |
| RCS | 2015-04-17 13:00 |
Oita | Yufuin, Yufugoukan | Inter-user Interference Suppression with Null-Space Extension in Multiuser Massive MIMO for Time Varying Channel Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka (NTT) RCS2015-17 |
This paper proposes a new IUI suppression technique named “Null-Space Extension” with Massive MIMO in time varying chann... [more] | RCS2015-17 pp.89-94 |
| RCS | 2014-06-18 16:30 |
Okinawa | Okinawa-ken Seinenkaikan (Naha) | Experimental Investigation for Massive Antenna Systems for Wireless Entrance (MAS-WE) with Parallelogram Array Antennas
-- Experimental extension for massive MIMO channel measurement and its basic performance evaluation results -- Atsushi Ohta, Kazuki Maruta, Takuto Arai, Satoshi Kurosaki, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2014-79 |
The authors have proposed Massive Antenna Systems for Wireless Entrance (MAS-WE) and effectiveness of the proposed syste... [more] | RCS2014-79 pp.275-280 |
| RCS | 2014-06-18 16:50 |
Okinawa | Okinawa-ken Seinenkaikan (Naha) | Experimental Investigation of Massive Antenna Systems for Wireless Entrance (MAS-WE) with Parallelogram Array Antennas
-- Performance evaluation for MAS-WE for higher order spatial division multiplexing -- Kazuki Maruta, Atsushi Ohta, Takuto Arai, Satoshi Kurosaki, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2014-80 |
We have proposed Massive Antenna Systems for Wireless Entrance (MAS-WE) and verified its effectiveness through computer ... [more] | RCS2014-80 pp.281-286 |
| RCS | 2014-04-17 10:45 |
Aichi | Nagoya Institute of Technology | A challenge for further capacity enhancement of Massive Antenna Systems (MAS)
-- Antenna arrangement optimization approach to reducie channel vector correlation -- Takuto Arai, Atsushi Ohta, Satoshi Kurosaki, Kazuki Maruta, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) RCS2014-1 |
The authors have proposed Massive Antenna Systems for Wireless Entrance (MAS-WE) and effectiveness of the proposed syste... [more] | RCS2014-1 pp.1-6 |
| RCS, SIP | 2014-01-23 13:00 |
Fukuoka | Kyushu Univ. | Experimental Investigation of Massive Antenna Systems for Wireless Entrance Links (MAS-WE)
-- Link level evaluation using measurement channel state information -- Kazuki Maruta, Atsushi Ohta, Satoshi Kurosaki, Takuto Arai, Tatsuhiko Iwakuni, Masataka Iizuka (NTT) SIP2013-92 RCS2013-262 |
We have proposed inter-user interference (IUI) suppression method and simple user scheduling method for Massive Antenna ... [more] | SIP2013-92 RCS2013-262 pp.41-46 |
| MWP | 2013-04-26 10:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | A consideration on wireless cell size of RoF-DAS over WDM-PON system Tatsuhiko Iwakuni (Osaka Univ.), Katsutoshi Tsukamoto (Osaka Inst. of Tech.), Kenji Miyamoto, Takayoshi Tashiro, Youichi Fukada, Shigeru Kuwano, Jun-ichi Kani, Jun Terada, Naoto Yoshimoto (NTT) MWP2013-2 |
[more] | MWP2013-2 pp.7-12 |
| MWP | 2012-11-08 16:50 |
Kyoto | Kyoto Institute of Technology | Adaptive Wireless Cell Configuration in RoF-DAS over WDM-PON Tatsuhiko Iwakuni (Osaka Univ.), Takeshi Higashino (NAIST), Katsutoshi Tsukamoto (OIT), Shozo Komaki (MJIIT), Katsumi Iwatsuki (Tohoku Univ.), Kenji Miyamoto, Takayoshi Tashiro, Youichi Fukada, Jun-ichi Kani, Naoto Yoshimoto (NTT) MWP2012-51 |
We have combined RoF technologies with broadband WDM-PON, and proposed RoF-DAS over WDM-PON which provides MIMO communic... [more] | MWP2012-51 pp.27-30 |
| EMT, PN, LQE, OPE, MWP, EST, IEE-EMT [detail] | 2012-01-27 11:15 |
Osaka | Osaka Univ. Convention Center | Investigation of Radio Cell Configuration in RoF-DAS over WDM-PON Kenji Miyamoto, Tatsuhiko Iwakuni, Takeshi Higashino, Katsutoshi Tsukamoto, Shozo Komaki (Osaka Univ.), Takayoshi Tashiro, Youichi Fukada, Jun-ichi Kani, Naoto Yoshimoto, Katsumi Iwatsuki (NTT) PN2011-70 OPE2011-186 LQE2011-172 EST2011-120 MWP2011-88 |
In order to enhance the universality for various types of wireless services and the flexibility for non-uniform traffic ... [more] | PN2011-70 OPE2011-186 LQE2011-172 EST2011-120 MWP2011-88 pp.269-274 |
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