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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 41  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2019-06-21
16:25
Okinawa Miyakojima Hirara Port Terminal Building Experimental Study of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems -- Verification of coordinated radio resource scheduling algorithm in up to 32 multi-stream transmission --
Takaharu Kobayashi, Shinya Kumagai, Masafumi Tsutsui, Chiyoshi Akiyama, Takashi Dateki, Hiroyuki Seki, Morihiko Minowa (Fujitsu), Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (DOCOMO) RCS2019-99
In 5G mobile communication systems, an effective high-capacity technology is expected by using high-density small cells.... [more] RCS2019-99
pp.365-370
RCS, AP
(Joint)
2018-11-22
11:00
Okinawa Okinawa Industry Support Center Study of Deployment and Antenna Configuration of Transmission Point for 5G Ultra High-Density Distributed Antenna Systems
Teppei Oyama, Shinya Kumagai, Takashi Seyama (Fujitsu), Chiyoshi Akiyama (FLAB), Takashi Dateki, Hiroyuki Seki, Morihiko Minowa (Fujitsu), Tatsuki Okuyama, Jun Mashino, Satoshi Suyama, Yukihiko Okumura (NTT docomo) RCS2018-207
We are promoting the ultra high-density distributed antenna systems toward the realization of high-capacity technologies... [more] RCS2018-207
pp.167-172
IN, RCS, NV
(Joint)
2018-05-10
10:25
Kanagawa Keio University Algorithm Study of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems -- Interference Coordination between Coordination Clusters Based on Common Beam Forming Switching --
Daisuke Jitsukawa, Takashi Seyama, Shinya Kumagai, Teppei Oyama, Takashi Dateki (Fujitsu), Koji Matsuyama (Fujitsu Laboratories), Hiroyuki Seki, Morihiko Minowa (Fujitsu) RCS2018-23
To improve system capacity of 5G mobile communication systems, coordinated MU-MIMO technology using ultra high-density d... [more] RCS2018-23
pp.7-12
RCS, SR, SRW
(Joint)
2018-02-28
15:20
Kanagawa YRP Algorithm Study of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems -- UE Scheduling Prioritizing High-Speed UEs in Small-Delay Slots from Channel Estimation Timing --
Takashi Seyama, Shinya Kumagai, Teppei Oyama, Daisuke Jitsukawa, Takashi Dateki (FUJITSU), Koji Matsuyama (FUJITSU LABORATORIES), Hiroyuki Seki, Morihiko Minowa (FUJITSU) RCS2017-337
In fifth generation mobile communication systems, enhancement of spectral efficiency per unit area by increasing the den... [more] RCS2017-337
pp.113-118
RCS, SR, SRW
(Joint)
2018-02-28
15:40
Kanagawa YRP Algorithm Study of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems -- Suppression of Interference between Closely-Located Coordination Clusters --
Daisuke Jitsukawa, Takashi Seyama, Shinya Kumagai, Teppei Oyama, Takashi Dateki (Fujitsu), Koji Matsuyama (Fujitsu Laboratories), Hiroyuki Seki, Morihiko Minowa (Fujitsu) RCS2017-338
To improve system capacity of 5G mobile communication systems, coordinated MU-MIMO technology using ultra high-density d... [more] RCS2017-338
pp.119-124
RCS, SR, SRW
(Joint)
2018-02-28
16:20
Kanagawa YRP A Study on Antenna Deployment Scenarios for 5G Ultra High-Density Distributed Antenna Systems
Teppei Oyama, Takashi Dateki, Takashi Seyama, Shinya Kumagai, Takaharu Kobayashi (Fujitsu), Koji Matsuyama (Fujitsu Laboratories), Hiroyuki Seki, Morihiko Minowa (Fujitsu) RCS2017-340
 [more] RCS2017-340
pp.131-135
RCS 2016-06-23
16:05
Okinawa Univ. of the Ryukyus Distributed antenna cooperative signal transmission and signal peak suppression for 5G mobile communication systems
Fumiyuki Adachi, Shinya Kumagai, Hiroyuki Miyazaki, Amnart Boonkajay, Yuta Seki, Tomoyuki Saito (Tohoku Univ.) RCS2016-73
In 5G mobile communication systems, very high rate data communications (>1Gbps/user) are demanded and hence, a significa... [more] RCS2016-73
pp.159-164
RCS, CCS, SR, SRW
(Joint)
2016-03-02
09:00
Tokyo Tokyo Institute of Technology Impact of UE Scheduling Criteria on Distributed Antenna OFDM-MU-MIMO Downlink
Shinya Kumagai, Yuta Seki, Fumiyuki Adachi (Tohoku Univ.) RCS2015-333
Small-cell network where a number of distributed antennas are deployed within each macro-cell can mitigate the negative ... [more] RCS2015-333
pp.1-6
RCS, CCS, SR, SRW
(Joint)
2016-03-02
09:25
Tokyo Tokyo Institute of Technology Impact of CSI error on Distributed Antenna OFDM-MU-MIMO Downlink
Yuta Seki, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2015-334
In small-cell network where a number of distributed antennas are deployed within each macro-cell, multi-user multiple-in... [more] RCS2015-334
pp.7-12
NS, RCS
(Joint)
2015-12-18
14:20
Ehime Matsuyama Community Center Effect of Joint Tx/Rx Cooperative Signal Processing on Downlink Broadband MU-MIMO Transmissions in Distributed Antenna Network
Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2015-274
The combination of distributed antenna network (DAN), where a number of antennas are distributed within each macro cell,... [more] RCS2015-274
pp.181-186
RCS 2015-10-02
09:00
Kanagawa YRP (Yokosuka) Joint Tx/Rx MMSE Filtering for Downlink Single-Carrier MU-MIMO
Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2015-176
In broadband single-carrier (SC) multi-user (MU) multiple-input multiple-output (MIMO) transmissions, inter-symbol inter... [more] RCS2015-176
pp.101-106
RCS, SR, SRW
(Joint)
2015-03-06
11:15
Tokyo Tokyo Institute of Technology UE-DA Dynamic Grouping for Distributed Antenna Network with MU-MIMO Transmission
Shohei Yoshioka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2014-354
Distributed antenna network (DAN), where a number of antennas are spatially distributed within wireless cells (macro cel... [more] RCS2014-354
pp.315-320
RCS, SR, SRW
(Joint)
2015-03-06
11:40
Tokyo Tokyo Institute of Technology Joint Tx/Rx Filtering for Distributed Antenna Network Uplink with Single-Carrier MU-MIMO
Shinya Kumagai, Shohei Yoshioka, Fumiyuki Adachi (Tohoku Univ.) RCS2014-355
The combination of distributed antenna network (DAN), where a number of antennas are spatially distributed within wirele... [more] RCS2014-355
pp.321-326
SIP, RCS 2015-01-22
10:15
Okayama Okayama Univ. Subcarrier Combining for Analog SC-FDE
Thanh Hai Vo, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) SIP2014-84 RCS2014-272
Recently, we proposed analog single-carrier transmission with frequency-domain equalization (analog SC-FDE) in order to ... [more] SIP2014-84 RCS2014-272
pp.19-24
SIP, RCS 2015-01-23
15:25
Okayama Okayama Univ. Joint Tx/Rx MMSE Filtering for Uplink Single-Carrier MU-MIMO
Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) SIP2014-112 RCS2014-300
In broadband single-carrier (SC) multi-user (MU) multiple-input multiple-output (MIMO) transmissions, inter-symbol inter... [more] SIP2014-112 RCS2014-300
pp.181-186
RCS, NS
(Joint)
2014-12-19
09:50
Mie Iseshi-Kanko-Bunka-Kaikan (Mie) Single-Carrier Multi-User MIMO with Time-Domain Transmit Equalization and THP Applying M Algorithm Based Perturbation Vector Search
Shohei Yoshioka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2014-253
In a combination of broadband single-carrier (SC) block transmission with transmit equalization (TE) and multi-user (MU)... [more] RCS2014-253
pp.195-200
RCS 2014-10-16
09:30
Kanagawa Keio Univ. Single-Carrier Multi-User MIMO Applying Transmit Equalization and Tomlinson-Harashima Precoding in Time-Domain
Shohei Yoshioka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2014-156
In multi-user (MU) multiple-input multiple-output (MIMO) using Tomlinson-Harashima precoding (THP), 2-step signal proces... [more] RCS2014-156
pp.1-6
RCC, ASN, NS, RCS, SR
(Joint)
2014-07-30
14:45
Kyoto Kyoto Terrsa Impact of Channel Estimation Error on Analog SC-FDE using STTD Combined with Receive Antenna Diversity
Thanh Hai Vo, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2014-92
In order to improve performance of analog signal transmission, we recently proposed a novel analog single-carrier transm... [more] RCS2014-92
pp.19-24
RCS 2014-06-17
16:30
Okinawa Okinawa-ken Seinenkaikan (Naha) Total Transmit Power Minimization under Per-Antenna Power Constraint for MIMO-SVD
Shinya Kumagai (Tohoku Univ.), Koichi Adachi, Sumei Sun (I2R), Fumiyuki Adachi (Tohoku Univ.) RCS2014-54
This paper considers a total transmit power minimization problem under per-antenna power constraint and sum-rate require... [more] RCS2014-54
pp.125-130
RCS 2014-06-17
16:50
Okinawa Okinawa-ken Seinenkaikan (Naha) Single-Carrier MU-MIMOusing Vector Perturbation
Shohei Yoshioka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2014-55
In this paper, we propose two new vector perturbation (VP) schemes for single-carrier (SC) multi-user (MU) multiple-inpu... [more] RCS2014-55
pp.131-136
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