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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 77  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2020-03-27
09:40
Fukui Fukui College
(Cancelled but technical report was issued)
Propagation Characteristics Analysis of 20GHz Band in Multiple LOS Urban Street Cell Environment
Koyo Tategami, Mitoshi Fujimoto (Univ. Fukui), Koshiro Kitao, Satoshi Suyama (NTT DOCOMO) AP2019-204
For 5th generation mobile communication system (5G), utilization of band of 6 to 100 GHz is investigated to increase the... [more] AP2019-204
pp.41-46
RISING
(2nd)
2019-11-26
14:10
Tokyo Fukutake Learning Theater, Hongo Campus, Univ. Tokyo [Poster Presentation] [MIKA/RISING Collaboration] Study on DoA estimation in the 19GHz band using the results of the outdoor experiment and Ray Tracing
Saki Uemura, Kentaro Nishimori, Ryotaro Taniguchi (Niigata Univ.), Minoru Inomata, Koshiro Kitao (NTT DOCOMO)
Use of the 5-generation mobile communication system (5G) in the millimeter wave band is assumed. In 5G, introduction of ... [more]
RCS 2019-10-25
10:20
Kanagawa Yokosuka Research Park 28-GHz Band 5G Downlink Throughput Enhancement Using Reflectarray with Variable Phase Shifter
Yuta Takahashi (NTT Docomo Inc.), Yuta Takahashi (Iwate Univ.), Junichi Abe, Kazushi Muraoka, Satoshi Suyama, Yuji Aburakawa (NTT Docomo Inc.) RCS2019-194
SHF band (3 to 30 GHz) radio waves, used for fifth-generation (5G) mobile communication systems, has an issue to establi... [more] RCS2019-194
pp.89-94
MIKA
(2nd)
2019-10-03
11:15
Hokkaido Hokkaido Univ. [Poster Presentation] A Study on Direction of Arrival Estimation in 19GHz Band Based on Real Data and Ray Tracing
Saki Uemura, Kentaro Nishimori, Ryotaro Taniguchi (Niigata Univ.), Minoru Inomata, Koshiro Kitao, Tetsuro Imai (NTT DOCOMO)
Use of the 5-generation mobile communication system (5G) in the millimeter wave band is assumed. In 5G, introduction of ... [more]
RCS 2019-04-18
10:55
Hokkaido Noboribetsu Grand Hotel Performance Evaluation of Intersite Coordination Scheme under High Speed Transportation Environment
Tatsuki Okuyama, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (DOCOMO) RCS2019-4
 [more] RCS2019-4
pp.17-22
RCS, SR, SRW
(Joint)
2019-03-08
16:55
Kanagawa YRP Indoor Experimental Trial on SU-MIMO Transmission for High SHF Wide-band Massive MIMO in 5G
nobuhide nonaka, kazushi muraoka, satoshi suyama, jun mashino (DOCOMO), kenji nakagawa, kenichiro kamohara, manabu sakai, yoshitaka murata, hiroki iura (Mitsubishi), yukihiko okumura (DOCOMO) RCS2018-333
The fifth-generation (5G) mobile communication system will introduce Massive MIMO technology at higher frequency bands w... [more] RCS2018-333
pp.267-271
RCS, SIP, IT 2019-02-01
13:55
Osaka Osaka University Outdoor Experimental Trial on SU-MIMO Transmission for High SHF Wide-band Massive MIMO in 5G
Manabu Sakai, Kenji Nakagawa, Kenichiro Kamohara, Hiroki Iura, Naofumi Iwayama, Kazuaki Ishioka, Masayuki Yamamoto, Akihiro Okazaki (MELCO), Nobuhide Nonaka, Satoshi Suyama, Jun Mashino (NTT DOCOMO), Atsushi Okamura (MELCO), Yukihiko Okumura (NTT DOCOMO) IT2018-70 SIP2018-100 RCS2018-277
This paper reports the outdoor experimental trial on SU-MIMO transmission with 16 stream spatially–multiplexing using hy... [more] IT2018-70 SIP2018-100 RCS2018-277
pp.203-207
MW 2018-11-16
13:15
Nagasaki Fukue Cultural Hall [Special Talk] Report on 2018 IEEE MTT-S International Microwave Symposium
Takashi Shimizu (Utsunomiya Univ.), Ryo Ishikawa (UEC), Tetsuya Ueda (Kyoto Inst. of Tech.), Masataka Ohira (Saitama Univ.), Hiroshi Okazaki (NTT DOCOMO), Yuji Komatsuzaki (Mitsubishi Electric Corp.), Tamura Masaya (TUT) MW2018-110
 [more] MW2018-110
pp.95-102
RCS 2018-10-19
11:00
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Lecture] High quality mobile video transmission in 5G wireless network systems
Hiroaki Asano, Takumi Higuchi, Masaaki Yoshino, Tetsuro Morimoto, Hideki Shingu, Takeshi Miyagoshi (Panasonic), Yosifumi Morihiro, Satoshi Suyama, Yukihiko Okumura (NTT DOCOMO) RCS2018-168
Recently research and development for realizing enhanced mobile broadband, massive device and mission critical IoT are p... [more] RCS2018-168
pp.95-100
SP, IPSJ-SLP
(Joint)
2018-07-26
14:30
Shizuoka Sago-Royal-Hotel (Hamamatsu) [Invited Talk] Docomo AI Agent: Open Partner Initiative -- Project SEBASTIEN --
Takanobu Oba, Takashi Yoshikawa (Docomo), Takaaki Fukutomi, Kiyoaki Matsui, Yusuke Ijima (NTT) SP2018-17
 [more] SP2018-17
pp.7-8
AP, SANE, SAT
(Joint)
2018-07-20
16:05
Hokkaido Hokkaido Univ. The propagation model for Massive MIMO at 20 GHz band.
Ryotaro Taniguchi, Kentaro Nishimori (Niigata Univ.), Koshoro Kitao, Minoru Inomata, Tetsuro Imai (NTT DOCOMO) AP2018-65 SAT2018-26
Massive MIMO transmission, whose number of antennas at the base station (BS) is much larger than the number of user term... [more] AP2018-65 SAT2018-26
pp.137-142(AP), pp.89-94(SAT)
RCS 2018-06-20
14:30
Nagasaki Nagasaki University Interference Tolerance for Fiber-optic Inband Relaying with Simultaneous Transmission
Hiroki Utatsu (Kogakuin Univ.), Jun Mashino, Satoshi Suyama (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2018-41
Relaying is a key technology to improve cell-edge performance and/or provide wider radio coverage. We have proposed fibe... [more] RCS2018-41
pp.37-42
RCS, SR, SRW
(Joint)
2018-03-01
10:50
Kanagawa YRP Performance Evaluation of Channel Estimation Algorithm for High-SHF-Band Massive MIMO by Using Real Propagation Channel Data
Hiroyuki Miyazaki, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT docomo) RCS2017-351
 [more] RCS2017-351
pp.197-202
RCS, SR, SRW
(Joint)
2018-03-01
11:50
Kanagawa YRP [Technology Exhibit] NTT DOCOMO's 5G Trials for 5G Realization
Hiroyuki Miyazaki, Satoshi Suyama, Jun Mashino, Yukihiko Okumura (NTT docomo) RCS2017-358 SR2017-124 SRW2017-78
Recently, mobile data traffic is rapidly growing due to the spread of smartphone/tablets and various mobile application ... [more] RCS2017-358 SR2017-124 SRW2017-78
p.225(RCS), p.65(SR), p.51(SRW)
ED, MW 2018-01-26
11:00
Tokyo Kikai-Shinko-Kaikan Bldg. [Special Talk] Briefing Report on European Microwave Week 2017
Ryo Ishikawa (UEC), Shuhei Amakawa (Hiroshima Univ.), Chen Chun-Pin (Kanagawa Univ.), Tamio Kawaguchi (Toshiba), Hiroshi Okazaki (NTT DOCOMO) ED2017-100 MW2017-169
The Microwave Week 2017, comprising the European Microwave Conference (EuMC), European Rader Conference(EuRAD), and Euro... [more] ED2017-100 MW2017-169
pp.35-40
AP, RCS
(Joint)
2017-11-08
17:10
Fukuoka Fukuoka University The effect of 3D beamforming on backhaul link in relaying networks
Ryota Nakao (Kogakuin Univ.), Jun Mashino, Satoshi Suyama (NTT DOCOMO), Hiroyuki Otsuka (Kogakuin Univ.) RCS2017-219
Relaying is a key technology used to improve cell-edge user throughput and/or provide wider coverage. Three-dimensional ... [more] RCS2017-219
pp.81-86
AP, MW
(Joint)
2017-09-22
10:10
Saitama Saitama University Outdoor Experiment Evaluation of Analog-Digital Hybrid Massive MIMO
Ryotaro Taniguchi, Kentaro Nishimori (Niigata Univ.), Ngochao Tran, Tetsuro Imai, Koshiro Kitao (NTT DOCOMO) AP2017-92
Massive MIMO transmission whose number of antennas is much larger than the number of user terminals, has been attracted ... [more] AP2017-92
pp.25-30
AP, SAT, SANE
(Joint)
2017-07-28
10:15
Aichi Nagoya Institute of Technology Path Loss Frequency Dependency of 2-66 GHz in an Urban Macro Cell Environment
Motoharu Sasaki, Mitsuki Nakamura, Minoru Inomata, Yasushi Takatori (NTT), Koshiro Kitao, Tetsuro Imai (NTT DoCoMo) AP2017-60
This paper presents a frequency dependency of path loss in an urban macro (UMa) cell environment on the basis of the mea... [more] AP2017-60
pp.81-86
AP
(2nd)
2017-06-28
- 2017-06-30
Hokkaido Hokkaido University [Poster Presentation] Proposal of new propagation based on measured parameters in massive MIMO
Ryotaro Taniguchi, Kentaro Nishimori (Niigata Univ.), Ngochao Tran, Koshoro Kitao, Tetsuro Imai (NTT DOCOMO)
Massive MIMO transmission has attracted much attention as one of key technologies in next-generation mobile communicatio... [more]
AP 2017-05-18
14:00
Miyazaki Hotel MERIEGES Proposal on the channel model for massive MIMO based on measured propagation channel
Ryotaro Taniguchi, Kentaro Nishimori (Niigata Univ.), Ngochao Tran, Tetsuro Imai, Koshiro Kitao (NTT DOCOMO) AP2017-31
 [more] AP2017-31
pp.49-54
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