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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 18件中 1~18件目  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS 2018-06-20
15:10
Nagasaki Nagasaki University Improving Convergence Rate of Frequency Block-Dependent Online Probabilistic Activation Control of Base Stations Based on Observed System Throughput in Heterogeneous Networks
Keiki Shimada (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-44
In this paper, we propose an improved method of online probabilistic frequency block-dependent activation/deactivation c... [more] RCS2018-44
pp.55-60
RCS 2018-06-20
15:20
Nagasaki Nagasaki University Frequency Block-Dependent Online Probabilistic Transmission Power Control of Base Stations Based on Observed System Throughput in Heterogeneous Networks
Ryo Inaba (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-45
In this paper, we extend our previously reported online probabilistic transmission power control of base stations (BSs) ... [more] RCS2018-45
pp.61-66
RCS 2018-06-20
15:30
Nagasaki Nagasaki University Adaptive Control of Step Size in Update of Activation Probability in Online Probabilistic Base-Station Activation Control Method
Ryota Ochiai (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-46
In this paper, we propose an adaptive control of step size in update of the activation probability in our previously rep... [more] RCS2018-46
pp.67-71
RCS 2018-06-22
09:30
Nagasaki Nagasaki University Combination of Beamforming with Per-Antenna Power Constraint and Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for Multiuser Massive MIMO-OFDM Transmission
Mikihito Suzuki (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-63
In this paper, we investigate a combination of the beamforming (BF) with per-antenna power limitation and adaptive peak-... [more] RCS2018-63
pp.167-172
RCS 2018-06-22
11:10
Nagasaki Nagasaki University Investigations on Structure of Interference Canceller in IDMA-based Random Access
Masayuki Kawata (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-72
This paper studies various structures of interference canceller appropriate for interleave division multiple access (IDM... [more] RCS2018-72
pp.219-224
RCS 2018-06-22
11:20
Nagasaki Nagasaki University Performance Evaluation of IDMA-based Random Access with Various Frequency Block Structures
Koki Fukushima (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-73
This paper studies an interleave division multiple access (IDMA)-based random access in order to support massive machine... [more] RCS2018-73
pp.225-229
RCS 2017-06-23
10:50
Okinawa Ishigaki Shoukou Kaikan Adaptive Initial Interpolation Vector Setting Method for Iterative Time-Domain Compression Method of MIMO Channel State Information
Masafumi Iizuka (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2017-84
In this paper, we investigate the adaptive setting for initial interpolation vector in our previously reported iterative... [more] RCS2017-84
pp.203-208
RCS 2017-06-23
11:00
Okinawa Ishigaki Shoukou Kaikan Performance Evaluations on Adaptive PAPR Reduction Method Using Null Space of MIMO Channel for Eigenmode Massive MIMO-OFDM Signals
Yuki Matsumoto (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2017-85
The combination of massive multiple-input multiple-output (MIMO) with beamforming (BF) and orthogonal frequency division... [more] RCS2017-85
pp.209-214
RCS 2017-06-23
11:10
Okinawa Ishigaki Shoukou Kaikan Investigations on Transmitter Beamforming Control Based on Firefly Algorithm in Massive MIMO Systems with Per-Antenna Power Constraint for System Throughput Maximization
Kento Kawai, Takashi Yamanaka (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2017-86
In this paper, we investigate the transmitter beamforming (BF) control based on the firefly algorithm (FA) in massive mu... [more] RCS2017-86
pp.215-220
RCS 2017-06-23
11:30
Okinawa Ishigaki Shoukou Kaikan Joint Optimization Method of User Association and Time/Frequency-Domain Scheduling for System Throughput Maximization in Heterogeneous Networks
Yuto Wakai (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2017-88
This paper proposes a jointly optimized user association and time/frequency-domain scheduling method for maximization of... [more] RCS2017-88
pp.227-232
NS, RCS
(Joint)
2016-12-22
14:10
Ishikawa   Performance Analysis on MU-MIMO Beamforming for 5G Radio Access
Kiichi Tateishi, Daisuke Kurita, Atsushi Harada, Yoshihisa Kishiyama (NTT DOCOMO) RCS2016-230
 [more] RCS2016-230
pp.123-128
NS, RCS
(Joint)
2016-12-22
14:35
Ishikawa   Performance Analysis on Beam Tracking Using CSI Feedback for 5G Radio Access
Kiichi Tateishi, Daisuke Kurita, Atsushi Harada, Yoshihisa Kishiyama (NTT DOCOMO) RCS2016-231
 [more] RCS2016-231
pp.129-134
RCS 2016-06-23
14:25
Okinawa Univ. of the Ryukyus Indoor Experiment on 5G Radio Access Using Beam Tracking at 15 GHz Band
Kiichi Tateishi, Daisuke Kurita, Atsushi Harada, Yoshihisa Kishiyama (NTT DOCOMO) RCS2016-69
In order to rapidly increasing traffic, 5G radio access network in mobile communications introduces higher frequency ban... [more] RCS2016-69
pp.135-140
RCS 2016-04-22
13:10
Aomori Romantopia, A Landscape of Forest and Stars, Hirosaki City Performance Evaluation of Beam Tracking with Massive MIMO at 15 GHz band in Anechoic Chamber Using 5G Experimental System
Kiichi Tateishi, Daisuke Kurita, Atsushi Harada, Yoshihisa Kishiyama (NTT DOCOMO) RCS2016-18
 [more] RCS2016-18
pp.99-104
RCS 2015-04-17
14:00
Oita Yufuin, Yufugoukan Downlink Transmission Performance of 5G Radio Access Using 15 GHz band in Indoor Small Cell Environment
Kiichi Tateishi, Daisuke Kurita, Atsushi Harada, Yoshihisa Kishiyama, Yukihiko Okumura (NTT DOCOMO) RCS2015-19
This paper presents the field experimental results on the propagation characteristic and downlink performance with wideb... [more] RCS2015-19
pp.101-106
AP, RCS
(Joint)
2011-11-18
13:00
Aichi Nagoya Congress Center Adaptive Amplify-and-Forward Relaying with Efficient Non-orthogonal Frequency Partitioning for Cellular Downlink
Kiichi Tateishi, Kenichi Higuchi (Tokyo Univ. of Science) RCS2011-224
This paper presents the efficient frequency partitioning schemes for the proposed adaptive amplify-and-forward (AF)-type... [more] RCS2011-224
pp.209-214
RCS 2011-06-24
09:00
Okinawa Ryukyu Univ. Adaptive Amplify-and-Forward Relaying for Cellular Downlink
Kiichi Tateishi, Kenichi Higuchi (Tokyo Univ. of Science) RCS2011-54
 [more] RCS2011-54
pp.111-116
NS, RCS
(Joint)
2010-12-17
11:10
Okayama Okayama Univ. Performance Evaluation of Adaptive Amplify-and-Forward Relaying with Fractional Frequency Reuse in Multiuser Cellular Uplink
Shinya Okazawa, Kiichi Tateishi, Kenichi Higuchi (Tokyo Univ. of Science) RCS2010-186
This paper presents an adaptive amplify-and-forward (AF)-type relaying method with fractional frequency reuse (FFR) for ... [more] RCS2010-186
pp.163-168
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