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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 189  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
SAT, RCS
(Joint)
2022-08-25
16:40
Hokkaido
(Primary: On-site, Secondary: Online)
[Encouragement Talk] Development of extreme coverage communication system extended by Non-Terrestrial Network(NTN) -- UE availability evaluation during rainfall --
Hisayoshi Kano, Munehiro Matsui, Jun-ichi Abe (NTT), Yuki Hokazono, Hinata Kohara, Yoshihisa Kishiyama (NTTdocomo), Fumihiro Yamashita (NTT)
 [more]
NS, SR, RCS, SeMI, RCC
(Joint)
2022-07-14
15:40
Ishikawa The Kanazawa Theatre + Online
(Primary: On-site, Secondary: Online)
Bit Error Rate Performance of OFDM Using Hierarchical Modulation in 3GPP TDL Channel Model
Daiki Mitamura, Mamoru Sawahashi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2022-90
 [more] RCS2022-90
pp.113-118
RCS 2022-06-15
13:10
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
Preamble Detection of PRACH with Short Sequence Considering Frequency Offset for NR Radio Interface
Takamichi Chiba, Mamoru Sawahashi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2022-30
 [more] RCS2022-30
pp.37-42
RCC, WBS, SAT, MICT 2022-05-26
13:00
Online Online Development of 38GHz-band Wireless Communication System Using High Altitude Platform Station (HAPS) for 5G Network -- Examination of the lens antenna of 38GHz-band ground station antenna system for HAPS --
Takuya Okura, Hiroyuki Tsuji, Ryu Miura, Tomoshige Kan, Takashi Matsuda, Morio Toyoshima (NICT), Jun Suzuki (SKY Perfect JSAT), Yoshihisa Kishiyama (NTT DOCOMO) WBS2022-6 RCC2022-6 SAT2022-6 MICT2022-6
 [more] WBS2022-6 RCC2022-6 SAT2022-6 MICT2022-6
pp.22-27
RCC, WBS, SAT, MICT 2022-05-26
15:00
Online Online Development of 38GHz-band Wireless Communication System Using High Altitude Platform Station (HAPS) for 5G Network -- Fundamental Experiment on Tracking System for HAPS Ground Station in Millimeter-Wave --
Go Otsuru, Hiroyuki Tsuji, Yuma Abe, Mariko Sekiguchi, Ryu Miura, Takuya Okura, Tomoshige Kan, Takashi Matsuda (NICT), Jun Suzuki (SKY Perfect JSAT), Yoshihisa Kishiyama (NTT DOCOMO) WBS2022-9 RCC2022-9 SAT2022-9 MICT2022-9
In this paper, we propose a tracking system for high-altitude platform station (HAPS) ground station in millimeter-wave ... [more] WBS2022-9 RCC2022-9 SAT2022-9 MICT2022-9
pp.40-45
RCS 2022-04-21
12:50
Osaka Osaka University, and online
(Primary: On-site, Secondary: Online)
[Invited Talk] DOCOMO's Recent Activities on 5G Evolution & 6G
Satoshi Suyama, Yoshihisa Kishiyama, Takahiro Asai (NTT DOCOMO) RCS2022-3
Towards further enhancement of 5G, so-called 5G evolution and Beyond 5G/6G that aims to be realized in almost 2030, a va... [more] RCS2022-3
p.11
SAT, SANE
(Joint)
2022-02-24
10:55
Online Online Development of extreme coverage communication system extended by Non-Terrestrial Network(NTN) -- A proposal on a routing algorithm that determines the optimal data transfer route by calculating the congestion degree and delay time --
Hisayoshi kano, Munehiro Matsui, Jun-ichi Abe (NTT), Yuki Hokazono, Hinata Kohara, Yoshihisa Kishiyama (NTTドコモ), Fumihiro Yamashita (NTT) SAT2021-56
NTT has been proposing an IOWN space integrated computing network concept. Extreme coverage communication systems consis... [more] SAT2021-56
pp.19-24
RCS, NS
(Joint)
2021-12-16
13:50
Nara Nara-ken Bunka Kaikan and Online
(Primary: On-site, Secondary: Online)
Issues of Sub-Terahertz-Band Radio Access Technologies for 6G
Hayato Fukuzono (NTT), Satoshi Suyama (NTT DOCOMO), Doohwan Lee, Daisei Uchida (NTT), Tatsuki Okuyama (NTT DOCOMO), Masashi Iwabuchi, Jun Mashino (NTT), Yoshihisa Kishiyama (NTT DOCOMO) RCS2021-180
One of the requirements for the sixth generation mobile communication system (6G) is extreme high data rate and capacity... [more] RCS2021-180
pp.30-34
RCS, SAT
(Joint)
2021-08-26
15:15
Online Online [Invited Lecture] Development of HAPS Backhaul System using mmWave Frequency -- HAPS as a NTN System for 5G and Beyond --
Hiromu Kitanozoo, Jun Suzuki (SJC), Yoshihisa Kishiyama, Yuki Hokazono (NTT DOCOMO), Takayuki Sotoyama, Mikihiro Ouchi (Panasonic), Ryu Miura, Hiroyuki Tsuji (NICT) SAT2021-30 RCS2021-105
In order to support the mid-2020 and beyond, the development of high-speed, high-capacity wireless communication systems... [more] SAT2021-30 RCS2021-105
pp.14-19(SAT), pp.32-37(RCS)
RCS, SAT
(Joint)
2021-08-26
15:40
Online Online [Invited Lecture] Beyond 5G and 6G for extreme coverage extension: Non-Terrestrial Network trends and performance evaluation of HAPS
Yuki Hokazono, Yoshihisa Kishiyama, Takahiro Asai (NTT DOCOMO INC.) SAT2021-31 RCS2021-106
In Beyond 5G & 6G era, extreme coverage extension is being studied for use cases in all places including air, sea, and s... [more] SAT2021-31 RCS2021-106
p.20(SAT), p.38(RCS)
RCS, SAT
(Joint)
2021-08-26
16:40
Online Online BLER Performance of Circular 256QAM Schemes Considering Cubic Metric for DFT-Precoded OFDM
Yugo Sasaki, Mamoru Sawahashi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2021-108
This paper presents the average block error rate (BLER) performance of circular 256QAM schemes considering a peak-to-ave... [more] RCS2021-108
pp.45-50
RCS, SAT
(Joint)
2021-08-26
17:05
Online Online Round Trip Time for Control Channel Multiplexing Using In-Band Full Duplex with Synchronous Orthogonal Sequence Assignment
Mamoru Sawahashi, Fumiya Makishi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2021-109
 [more] RCS2021-109
pp.51-56
RCS, SAT
(Joint)
2021-08-27
18:00
Online Online Measurement on 39 GHz band radio propagation characteristics for coverage extension from the sky
Yuki Hokazono, Yoshihisa Kishiyama, Takahiro Asai (NTT DOCOMO INC.), Tetsumi Takamori, Jun Suzuki, Hiromu Kitanozono (SKY Perfect JSAT Corporation) SAT2021-41
While the 5G is expected to be an important technology for regional development and solving regional issues, a key issue... [more] SAT2021-41
pp.73-78
RCS, SR, NS, SeMI, RCC
(Joint)
2021-07-16
14:30
Online Online Considerations on Accuracy Improvement in Close DOA Estimation with Deep Learning
Yuya Kase, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Takanori Sato (Hokkaido Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCC2021-39 NS2021-55 RCS2021-97 SR2021-39 SeMI2021-28
In addition to subspace methods such as MUSIC and ESPRIT, recently,
compressed sensing and deep learning have been appl... [more]
RCC2021-39 NS2021-55 RCS2021-97 SR2021-39 SeMI2021-28
pp.77-82(RCC), pp.118-123(NS), pp.98-103(RCS), pp.100-105(SR), pp.76-81(SeMI)
RCS, SR, SRW
(Joint)
2021-03-03
11:15
Online Online BLER of OFDM Using FTN Signaling with Turbo SIC Multiplying Symbol Estimate by Weighting Factor
Toshiharu Obara, Tsubasa Shobudani, Mamoru Sawahashi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2020-206
This paper proposes multiplying weighting factor of less than one to the interfering OFDM symbol estimate for turbo soft... [more] RCS2020-206
pp.19-24
RCS, SR, SRW
(Joint)
2021-03-03
11:40
Online Online Detection Probability of PRACH Preamble for NR Radio Interface in 3GPP TDL Channel Models
Kosuke Kamata, Mamoru Sawahashi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2020-207
This paper presents preamble detection probability of Physical Random Access Channel (PRACH) with long sequence based on... [more] RCS2020-207
pp.25-30
RCS, SR, SRW
(Joint)
2021-03-03
14:25
Online Online [Invited Lecture] Outlook for 6G Wireless Technology
Yoshihisa Kishiyama (NTT DOCOMO) RCS2020-216 SR2020-63 SRW2020-54
In Japan, the commercial service of 5G was started in March, 2020, and the opportunity of the examination on the communi... [more] RCS2020-216 SR2020-63 SRW2020-54
p.74(RCS), p.15(SR), p.15(SRW)
NS, RCS
(Joint)
2020-12-18
11:15
Online Online A Study of 6G Radio Access Technologies for Achieving 100 Gbps Data Rate by Extreme Wideband Transmission Using Higher Frequency Bands
Satoshi Suyama, Tatsuki Okuyama, Yoshihisa Kishiyama, Nobuhide Nonaka, Takahiro Asai (NTT DOCOMO) RCS2020-146
In sixth-generation (6G) mobile communication system, it is expected that a extreme hgih data rate coomunication with a ... [more] RCS2020-146
pp.66-71
NS, RCS
(Joint)
2020-12-18
13:25
Online Online [Invited Lecture] Distributed Antenna Systemes using High-Frequency-Band targeting 6G Wireless Networks
Daisei Uchida, Tatsuhiko Iwakuni, Naoki Kita, Takeshi Onizawa (NTT), Yoshihisa Kishiyama, Satoshi Suyama, Satoshi Nagata, Takahiro Asai (docomo) NS2020-101 RCS2020-148
High-Speed and broadband network transformation is needed for multi-points collecting sensing data and distributing movi... [more] NS2020-101 RCS2020-148
pp.73-78
SRW 2020-08-25
14:40
Online Online [Invited Talk] DOCOMO's Views and Recent Activities on 5G Evolution & 6G
Satoshi Suyama, Yoshihisa Kishiyama, Takahiro Asai (NTT DOCOMO) SRW2020-24
A commercial service in fifth-generation (5G) mobile communication system launched in March 2020 at last by using 3.7 GH... [more] SRW2020-24
p.71
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