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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 271  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
NS, RCS
(Joint)
2024-12-19
11:45
Hokkaido Hakodate Arena + Online
(Primary: On-site, Secondary: Online)
A Study on Efficient Channel Estimation Using Delay- Domain Channel Sparsity in OTFS
Masahiro Maruyama, Takanaroi Hara, Kenichi Higuchi (TUS)
 [more]
NS, RCS
(Joint)
2024-12-20
09:55
Hokkaido Hakodate Arena + Online
(Primary: On-site, Secondary: Online)
Scalable User Scheduling Method for Distributed MIMO Networks with User-Centric TRP Clustering
Hiroki Kato, Takanori Hara, Kenichi Higuchi (TUS)
 [more]
RCS 2024-06-19
14:35
Okinawa
(Primary: On-site, Secondary: Online)
Autonomous Decentralized User Association Method to Maximize System-Level Throughput Satisfaction Rate in Co-existing Networks with HAPS and Terrestrial BSs
Shoki Ikeda, Takanori Hara (Tokyo Univ. of Science), Yuki Hokazono, Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-39
This paper proposes an autonomous decentralized user association method for the networks where the high altitude platfor... [more] RCS2024-39
pp.64-70
RCS 2024-06-19
14:45
Okinawa
(Primary: On-site, Secondary: Online)
Inter-Network Interference Coordination Using Protected Band in Co-existing Networks with HAPS and Terrestrial BSs
Ryotaro Tsutsui, Takanori Hara (Tokyo Univ. of Science), Yuki Hokazono, Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-40
In this paper, we propose an inter-network interference coordination method using protected bands in the downlink of a n... [more] RCS2024-40
pp.71-76
RCS 2024-06-19
14:55
Okinawa
(Primary: On-site, Secondary: Online)
Frequency Block-Dependent Sleep Control of Base Stations Based on Distributed DQN for Improving Energy Efficiency Both in Up and Downlinks
Yuma Shishido, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama (NTT DOCOM), Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-41
In this paper, we investigate a frequency block-dependent sleep control method of base stations based on a deep Q-networ... [more] RCS2024-41
pp.77-84
RCS 2024-06-19
15:05
Okinawa
(Primary: On-site, Secondary: Online)
Autonomous Decentralized TRP Group Selection Method to Maximize System Throughput in Downlink Distributed MIMO
Koki Maeda, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-42
In this paper, we propose a selecting method of set of transmission reception points (TRPs) to be connected for each use... [more] RCS2024-42
pp.85-90
RCS 2024-06-19
15:15
Okinawa
(Primary: On-site, Secondary: Online)
Autonomous Decentralized TRP Group Selection with Bandwidth Allocation Among TRP Groups in Downlink Distributed MIMO with Overlapped TRP Group Configuration
Yuta Yagi, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-43
This paper proposes a method for configuring group of transmission reception points (TRPs) for cooperative transmission ... [more] RCS2024-43
pp.91-98
RCS 2024-06-19
15:25
Okinawa
(Primary: On-site, Secondary: Online)
Beam Selection Method Based on Horizontal-and-Vertical Angle-Domain Adaptive Beam Grouping for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink
Azusa Matsumoto, Nobuhide Nonaka, Takanori Hara, Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-44
This paper investigates a beam selection method for the downlink massive multiple-input multiple-output (mMIMO) analog b... [more] RCS2024-44
pp.99-105
RCS 2024-06-19
15:45
Okinawa
(Primary: On-site, Secondary: Online)
A Study on Channel Estimation Based on FISTA for OTFS Transmission in the Presence of Fractional Doppler
Masahiro Maruyama, Takanori Hara, Kenichi Higuchi (TUS) RCS2024-45
Orthogonal time frequency space (OTFS) modulation has gained attention as an effective solution for doubly selective fad... [more] RCS2024-45
pp.106-111
RCS 2024-06-19
15:55
Okinawa
(Primary: On-site, Secondary: Online)
A Study on Active User Detection Using Short-Pilot Structure for Grant-Free Access Based on Independent Component Analysis
Mitsutoshi Nakata, Takanori Hara, Kenichi Higuchi (TUS) RCS2024-46
 [more] RCS2024-46
pp.112-117
RCS 2024-06-20
15:15
Okinawa
(Primary: On-site, Secondary: Online)
Differential Modulation for Non-Coherent Grant-free NOMA in the Presence of Timing Offsets
Eiji Yoshimura, Takanori Hara (TUS), Kohei Ueda, Koji Ishibashi (UEC), Kenichi Higuchi (TUS) RCS2024-64
 [more] RCS2024-64
pp.215-220
RCS 2024-06-20
15:40
Okinawa
(Primary: On-site, Secondary: Online)
Adaptive Interference Control Among Spatial Streams Based on Difference in Singular Values for PAPR Reduction in Uplink Eigenmode Massive MIMO Transmission
Yuta Abekura, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-65
In this paper, we propose an adaptive interference control among spatial streams based on difference in singular values ... [more] RCS2024-65
pp.221-228
IN, RCS, NV
(Joint)
2024-05-31
15:05
Fukuoka Fukuoka University [Encouragement Talk] NOMA-Based Highly-Efficient Low-Latency HARQ Method with Inter-Base Station Cooperation for URLLC
Kenichi Higuchi, Ryota Kobayashi, Takanori Hara (Tokyo Univ. of Science), Yasuaki Yuda (Panasonic Holdings) RCS2024-27
This paper extends our previously reported non-orthogonal multiple access (NOMA)-based highly-efficient and low-latency ... [more] RCS2024-27
pp.57-63
RCS 2024-04-26
10:20
Hiroshima
(Primary: On-site, Secondary: Online)
Extended Angle-Domain Beam Grouping-Based Beam Selection for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink
Nobuhide Nonaka, Kenichi Higuchi (Tokyo Univ. of Science) RCS2024-8
In this paper, we consider an appropriate beam selection method in downlink massive multiple-input multiple-output (mMIM... [more] RCS2024-8
pp.38-45
SIP, IT, RCS 2024-01-19
14:55
Miyagi
(Primary: On-site, Secondary: Online)
Performance of the Joint PAPR Reduction Method Using Null Space in Channel for MIMO-OFDM Signals and Predistortion Techniques in Multiple-Antenna AF-type Relay Transmission
Asuka Kakehashi, Kenichi Higuchi (Tokyo Univ. of Science) IT2023-69 SIP2023-102 RCS2023-244
The combination of the peak-to-average power ratio (PAPR) reduction and predistortion (PD) technique removes the nonline... [more] IT2023-69 SIP2023-102 RCS2023-244
pp.211-216
AP, RCS
(Joint)
2023-11-15
10:00
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
Peak Cancellation Signal-Based Parallel PAPR Reducton Method Using Low-Dimensional Null Space in Massive MIMO-OFDM Transmission
Jun Saito, Takanori Hara, Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-151
 [more] RCS2023-151
pp.1-6
AP, RCS
(Joint)
2023-11-15
10:25
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
Beam Selection Based on Angle-Domain Beam Grouping for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink
Nobuhide Nonaka, Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-152
In this paper, we introduce non-orthogonal multiple access (NOMA) into the massive multiple-input multiple-output (MIMO)... [more] RCS2023-152
pp.7-12
RCS 2023-10-20
15:40
Kagawa Kagawa University (Saiwai-cho Campus), and online
(Primary: On-site, Secondary: Online)
Investigations on Low-Complexity User-Specific TRP Selection Method in Downlink Distributed MIMO with Channel Estimation Errors
Hiroki Kato, Takanori Hara, Kenichi Higuchi (TUS) RCS2023-149
In this paper, we propose a computationally-efficient method for user equipment (UE)-specific transmission reception poi... [more] RCS2023-149
pp.96-101
SeMI, RCS, RCC, NS, SR
(Joint)
2023-07-12
10:00
Osaka Osaka University Nakanoshima Center + Online
(Primary: On-site, Secondary: Online)
Scalable Clustering Method in Downlink Cell-Free MIMO Using Layered Partially Non-orthogonal ZF-Based Beamforming
Daisuke Ishii, Takanori Hara, Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-79
In this paper, we investigate a method for clustering UE-specific transmission TRPs in downlink cell-free multi-input mu... [more] RCS2023-79
pp.1-6
SeMI, RCS, RCC, NS, SR
(Joint)
2023-07-13
09:50
Osaka Osaka University Nakanoshima Center + Online
(Primary: On-site, Secondary: Online)
Compressed Sensing-Based Active User Detection for Random Access with Transmitter Filtering and Channel Identifier Linked Receiver Beamforming
Hiroki Fujimoto, Takanori Hara, Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-87
This paper investigates compressed sensing-based active user detection methods for random access using transmitter filt... [more] RCS2023-87
pp.39-44
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