RF Chain-Wise Clustering Schemes for Millimeter Wave Cell-Free Massive MIMO With Centralized Hybrid Beamforming

Shunsuke Kamiwatari, Issei Kanno, Takahiro Hayashi, Yoshiaki Amano

IEEE Access

2024年2月

Analysis of Clock Distribution in User-centric Radio Access Network for Cell-free Massive MIMO

Takahide Murakami, Naoki Aihara, Yu Tsukamoto, Akio Ikami, Hiroyuki Shinbo, Yoshiaki Amano

IEEE Consumer Communications & Networking Conference (CCNC) 2024

2024年1月

Multi-homing AP Connection for Cell-Free massive MIMO in Distributed CPU Environment

Naoki Aihara, Akio Ikami, Yu Tsukamoto, Takahide Murakami, Hiroyuki Shinbo, Yoshiaki Amano

IEEE Consumer Communications & Networking Conference (CCNC) 2024

2024年1月

Interference-Aware Analog Beam Selection for Cell-Free Massive MIMO with Hybrid Beamforming over Millimeter-Wave Channels

Shunsuke Kamiwatari, Masaaki Ito, Issei Kanno, Kengo Ando(The University of Electro-Communications), Koji Ishibashi(The University of Electro-Communications)

IEEE Consumer Communications & Networking Conference (CCNC) 2024

2024年1月

Antenna Design for Robust Millimeter Wave LoS-MIMO Link in Mobile Analog Repeater Achieving Low Latency and High Capacity

Masahiro Takigawa, Ryochi Kataoka, Issei Kanno, Yoji Kishi

IEEE Consumer Communications & Networking Conference (CCNC) 2024

2024年1月

Clustering and Beamforming for User-Centric Cell-Free Massive MIMO With Backhaul Capacity Limitation

Masaaki Ito, Shuto Fukue(The University of Electro-Communications), Kengo Ando(The University of Electro-Communications), Issei Kanno, Kosuke Yamazaki, Koji Ishibashi(The University of Electro-Communications)

IEEE Access

2023年12月

Stochastic Geometry-Based Performance Analysis with Correlated Shadowing in Distributed Antenna Systems

Wei-Yu Chen(USC), Masaaki Ito, Issei Kanno, Thomas Choi(USC), Andreas F. Molisch(USC)

The 2023 IEEE Global Communications Conference (GLOBECOM)

2023年12月

Evaluation of TDD Timing Detection Error Using UL and DL Received Signals in the Relay Device

Yoshio Kunisawa, Takahiro Hayashi

IEICE Communications Express

2023年11月

基地局用10周波数共用30°ビーム平面アンテナ

島田 健吾(日本電業工作), 曽我 智之(日本電業工作), 水村 慎(日本電業工作), 中野 雅之

電子情報通信学会論文誌 B

2023年11月

User-centric AP Clustering with Deep Reinforcement Learning for Cell-Free Massive MIMO

Yu Tsukamoto, Akio Ikami, Naoki Aihara, Takahide Murakami, Hiroyuki Shinbo, Yoshiaki Amano

The 21st ACM International Symposium on Mobility Management and Wireless Access (MobiWac'23)

2023年10月

Low-Complexity Digital Predistortion of RF PowerAmplifiers Based on FastGRNN

Taishi Watanabe, Takeo Ohseki, Issei Kanno, Yoshiaki Amano

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Millimeter Wave Path Loss Modeling using Multi-Resolution Map Based on ResNet

Tatsuya Nagao, Takahiro Hayashi

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Feature Extraction Using Hough Transform in RadioPropagation Estimation

Rento Hagiwara(Yokohama National University), Koichi Ichige(Yokohama National University), Tatsuya Nagao, Takahiro Hayashi

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

User-centric Virtualized CPU Deployment and AP Clustering for Scalable Cell-Free Massive MIMO

Akio Ikami, Yu Tsukamoto, Naoki Aihara, Takahide Murakami,Hiroyuki Shinbo, Yoshiaki Amano

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Measurement-based Evaluation of Path loss and Propagation Mechanisms in the 300 GHz band

Satoshi Ito, Kazuki Takezawa, Takahiro Hayashi

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

TOA-Based Positioning Scheme for IRS-Assisted 5GNetworks

Tomofumi Kanno, Takuya Ohto, Hiromi Matsuno, Tatsuya Nagao, Takahiro Hayashi

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Always-Connected Enablement Base Station to eliminatethe effects of RRC transitions delay

Takeo Ogawara, Kenichi Okonogi, Akito Suzuki, Masayuki Kurata,Sohei Itahara, Tomoyuki Nagano(KDDI), Masaki Suzuki

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Estimation Method for Human Blockage Loss in the 300GHz Band

Satoshi Ito, Kazuki Takezawa, Takahiro Hayashi

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Element Failure Correction for Reconfigurable MetasurfaceReflectors

Takuya Ohto, Hiromi Matsuno, Takahiro Hayashi, Mitsutaka Okita(Japan Display Inc.), Daiichi Suzuki(Japan Display Inc.), Kazuki Matsunaga(Japan Display Inc.), Shinichiro Oka(Japan Display Inc.)

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Data Rate Control for C-V2X Services in a Single PDUSession based on Expected Maximum Bitrate

Tetsu Joh, Masaki Suzuki, Takeshi Kitahara(KDDI), Tomohiro Otani(KDDI)

The 2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall)

2023年10月

Frequency extension of radio propagation model using fine-tuning

Tatsuya Nagao, Takahiro Hayashi

IEICE Communications Express

2023年9月

Low-Cost Learning-Based Path Loss Estimation Using Correlation Graph CNN

Keita Imaizumi(Yokohama National University), Koichi Ichige(Yokohama National University), Tatsuya Nagao, Takahiro Hayashi

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences

2023年8月

Frequency Extension of Radio Propagation Model Using Fine-Tuning

Tatsuya Nagao, Takahiro Hayashi

IEICE Communications Express

2023年7月

A Study on Determination Method of IRS Reflection Patterns Using Radio Environmental Map

Tomofumi Kanno, Hiromi Matsuno, Takuya Ohto, Tatsuya Nagao, Michihiro Harada, Takahiro Hayashi

2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (IEEE AP-S/URSI 2023)

2023年7月

Prediction Method for Incident Angle Characteristics of Bistatic RCS of Reflectarray

Hiroshi Hashiguchi( National Defense Academy), Naobumi Michishita( National Defense Academy), Hisashi Morishita( National Defense Academy), Hiromi Matsuno, Takuya Ohto, Masayuki Nakano

2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (IEEE AP-S/URSI 2023)

2023年7月

Lightweight AP Selection Algorithm for Uniform QualityEverywhere in Cell-Free Massive MIMO

Akio Ikami, Yu Tsukamoto, Naoki Aihara, Takahide Murakami, Hiroyuki Shinbo

The 14th International Conference on Ubiquitous and Future Networks (ICUNF 2023)

2023年7月

A Deep Learning Method for Path Loss Prediction Using Geospatial Information and Path Profiles

Takahiro Hayashi, Koichi Ichige(Yokohama National University)

IEEE Transactions on Antennas and Propagation

2023年7月

Adaptive Bit Allocation for SVD based Hybrid Processing of Uplink Cell-Free Massive MIMO under Limited Fronthaul Capacity

Issei Kanno, Masaaki Ito, Yoshiaki Amano, Yoji Kishi, Thomas Choi(USC), Wei Yu Chen(USC), Andreas F. Molisch(USC)

2023 IEEE 97th Vehicular Technology Conference (VTC2023-Spring)

2023年6月

RNN-Based Path Loss Modeling with Variable-Size MapData in Urban Environments

Tatsuya Nagao, Takahiro Hayashi

2023 IEEE 97th Vehicular Technology Conference (VTC2023-Spring)

2023年6月

Low-Cost Path Loss Estimation Using Correlation GraphCNN with Novel Feature Parameters

Keita Imaizumi(Yokohama National University), Koichi Ichige(Yokohama National University), Tatsuya Nagao, Takahiro Hayashi

2023 IEEE 97th Vehicular Technology Conference(VTC2023-Spring)

2023年6月

Measurements and Simulation of Radio Propagation on the Lunar Surface

Akira Akasaka, Feng Lu, Akira Yamaguchi, Kazunori Takeuchi, Hiroyuki Shinbo

The 34th International Symposium on Space Technology and Science (ISTS)

2023年6月

A Study of Building Map Representation for Delay Spread Estimation Model using Machine Learning

Keiji Yoshikawa, Tatsuya Nagao, Kazuki Takezawa, Satoshi Ito, Takahiro Hayashi

The 17th European Conference on Antennas and Propagation (EuCAP 2023)

2023年3月

High-Accuracy and High-Speed Beam Tracking Algorithm for THz Short-Range Mobile Communication

Hiromi Matsuno, Tatsuya Nagao, Takahiro Hayashi

The 17th European Conference on Antennas and Propagation (EuCAP 2023)

2023年3月

Overloaded Pilot Assignment with Pilot Decontamination for Cell-Free Systems

Noboru Osawa, Fabian Göttsch (Technische Universität Berlin), Issei Kanno, Takeo Ohseki, Yoshiaki Amano, Giuseppe Caire (Technische Universität Berlin), Kosuke Yamazaki

2023 IEEE Wireless Communications and Networking Conference (WCNC)

2023年3月

Basic Performance Evaluation of Low Latency and High Capacity Relay Method in Millimeter-Wave Bands

Ryochi Kataoka, Masahiro Takigawa, Takeo Ohseki, Taishi Watanabe, Yoshiaki Amano

2023 IEEE Wireless Communications and Networking Conference (WCNC)

2023年3月

Digital Predistortion of RF Power Amplifiers using DeepShift

Taishi Watanabe, Takeo Ohseki , Yoshiaki Amano

2023 IEEE Wireless Communications and Networking Conference (WCNC)

2023年3月

Wide Beamwidth and High Gain Reflection Pattern Design Method for Intelligent Reflecting Surface

Hiromi Matsuno, Takuya Ohto, Takahiro Hayashi, Mitsutaka Okita(Japan Display), Daiichi Suzuki(Japan Display), Kazuki Matsunaga(Japan Display), Shinichiro Oka(Japan Display)

2023 IEEE Wireless Communications and Networking Conference (WCNC)

2023年3月

A Parallel Processing Method of Large-scale System Level Simulator for Advanced 5G System

Megumi Shibuya, Akira Yamaguchi, Takahide Murakami, Hiroyuki Shinbo

The 19th International Conference on Networking and Services (ICNS 2023)

2023年3月

Measurements of Reflection Characteristics of the Lunar Surface for Radio Propagation

Akira Akasaka, Feng Lu(KDDI), Akira Yamaguchi, Kazunori Takeuchi, Hiroyuki Shinbo

The international IEEE Aerospace Conference 2023

2023年3月

Method of Discriminating Wireless Link Status for Safe Operation Architecture of Mobile Robots

Ko Matsuhiro, Hiroyuki Shinbo, Hiroyuki Ishii, Atsuo Takanishi

2023 IEEE/SICE International Symposium on System Integration (SII 2023)

2023年2月

A Realistic Path Loss Model for Cell-Free Massive MIMO in Urban Environments

Thomas Choi(USC), Issei Kanno, Masaaki Ito, Wei-Yu Chen(USC), Andreas Molisch(USC)

IEEE Global Communications Conference 2022 (GLOBECOM 2022)

2022年12月

RF chain-wise Clustering for Centralized mm-wave Cell-Free massive MIMO with Hybrid Beamforming

Shunsuke Kamiwatari, Issei Kanno, Takeo Ohseki, Kosuke Yamazaki, Yoji Kishi

IEEE Global Communications Conference 2022 (GLOBECOM 2022)

2022年12月

空間データとニューラルネットワークによる電波伝搬損失推定

井上 一也(横浜国立大学), 今泉 圭太(横浜国立大学), 市毛 弘一(横浜国立大学), 長尾 竜也, 林 高弘

電子情報通信学会論文誌 B

2022年11月

Cylindrical Near-Field Scanning of Bistatic Radar Cross Section for Reflectarray With Two-Dimensional Reflection

Hiroshi Hashiguchi(National Defense Academy), Naobumi Michishita (National Defense Academy), Hisashi Morishita (National Defense Academy), Hiromi Matsuno, Takuya Ohto, Masayuki Nakano

The 2022 International Symposium on Antennas and Propagation (ISAP 2022)

2022年10月

Experimental Investigation of the Reflection Characteristics of a Flat Lunar Surface

Feng Lu, Akira Yamaguchi, Kazunori Takeuchi, Hiroyuki Shinbo

The 10th Annual IEEE International Conference on Wireless for Space and Extreme Environments (WISEE 2022) 

2022年10月

A Survey on Research Activities for Deploying Cell Free Massive MIMO towards beyond 5G

Issei Kanno, Kosuke Yamazaki, Yoji Kishi, Satoshi Konishi

IEICE Transactions on Communications

2022年10月

User-Centric Design of Millimeter Wave Communications for Beyond 5G and 6G

Koji Ishibashi(The University of Electro-Communications), Takanori Hara(The University of Electro-Communications), Sota Uchimura(The University of Electro-Communications), Tetsuya Iye(Kozo Keikaku Engineering, Inc.), Yoshimi Fujii(Kozo Keikaku Engineering, Inc.), Takahide Murakami, Hiroyuki Shinbo

IEICE Transactions on Communications

2022年10月

Virtualized terminal utilizing terahertz band radio waves for Beyond 5G : Timing Synchronization Scheme of Relay Device

Yoshio Kunisawa, Yoshiaki Amano, Takahiro Hayashi

2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)

2022年9月

Practical Evaluation Method for Large IRS: RCS Pattern Synthesis of Sub-IRS with Mutual Coupling

Hiromi Matsuno, Takuya Ohto, Michihiro Harada, Tatsuya Nagao, Takahiro Hayashi

2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)

2022年9月

Interference suppression for distributed CPU deployments in Cell-Free massive MIMO

Akio Ikami, Yu Tsukamoto, Naoki Aihara, Takahide Murakami, Hiroyuki Shinbo

2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)

2022年9月

Joint AP On/Off and User-Centric Clustering for Energy Efficient Cell-Free Massive MIMO Systems

Masaaki Ito, Issei Kanno, Yoshiaki Amano, Yoji Kishi, Wei Yu Chen(USC), Thomas Choi(USC), Andreas F. Molisch(USC)

The 2022 IEEE 96th Vehicular Technology Conference (VTC-Fall 2022)

2022年9月

A Study on Radio Propagation Characteristics at 100 GHz between the User Equipment and a Wearable Device

Kazuki Takezawa, Tatsuya Nagao, Takahiro Hayashi

2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)

2022年9月

Fine-Tuning for Propagation Modeling of Different Frequencies with Few Data

Tatsuya Nagao, Takahiro Hayashi

2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)

2022年9月

Learning-Based Path Loss Estimation Using Multiple Spatial Data and System Parameters

Kazuya Inoue(Yokohama National University), Keita Imaizumi (Yokohama National University), Koichi Ichige(Yokohama National University),Tatsuya Nagao, Takahiro Hayashi

2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)

2022年9月

Blockage Prediction in an Outdoor mmWave Environment by Machine Learning Employing a Top View Image

Takahide Murakami, Keiji Yoshikawa, Akira Yamaguchi, Hiroyuki Shinbo

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2022)

2022年9月

A Study on Path Loss Modeling Using ResNet and Pre-Training With Free Space Path Loss

Tatsuya Nagao, Takahiro Hayashi

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2022) Workshop

2022年9月

User Equipment Tracking for a Millimeter Wave System Using Vision and RSSI

Shoichiro Mihara, Takahide Murakami, Akira Yamaguchi, Hiroyuki Shinbo

IEEE Open Journal of the Communications Society

2022年9月

Dual Bands and Dual Polarization Reflectarray for Millimeter Wave Application by Supercell Structure

Hiroshi Hashiguchi(National Defense Academy), Takumi Nishime(National Defense Academy), Naobumi Michishita(National Defense Academy), Hisashi Morishita(National Defense Academy), Hiromi Matsuno, Takuya Ohto, Masayuki Nakano

IEICE Transactions on Communications

2022年9月

Development of Intelligent Reflecting Surfaces for Mobile Communication Systems

Hiromi Matsuno, Takuya Ohto, Takahiro Hayashi

2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition

2022年8月

A Study of Beam Scanning Scheme for IRS-Assisted 5G Millimeter-Wave Networks

Takuya Ohto, Hiromi Matsuno, Kazuki Takezawa, Tatsuya Nagao, Yoshiaki Amano

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI 2022)

2022年7月

Dual Band and Dual Polarization Reflectarray Enabling Reflection to Two-dimensional Direction

Hiroshi Hashiguchi(National Defense Academy), Naobumi Michishita(National Defense Academy), Hisashi Morishita(National Defense Academy), Hiromi Matsuno, Takuya Ohto, Masayuki Nakano

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI 2022)

2022年7月

A Method for Estimating User Equipment Orientation Using the Ratio of Received Power due to IRS Reflection Pattern Switching

Kazuki Takezawa, Hiromi Matsuno, Tatsuya Nagao, Takuya Ohto, Yoshiaki Amano

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI 2022)

2022年7月

Angle Estimation of Wireless Devices Using Power Weighted Averaging Angle for Virtualized Terminal Using THz Band

Hiromi Matsuno, Tatsuya Nagao, Yoshiaki Amano

2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI 2022)

2022年7月

Fronthaul Load-Reduced Scalable Cell Free massive MIMO by Uplink Hybrid Signal Processing

Issei Kanno, Masaaki Ito, Takeo Ohseki, Kosuke Yamazaki, Yoji Kishi, Thomas Choi(USC), Wei Yu Chen(USC), Andreas F. Molisch(USC)

The 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring)

2022年6月

Adaptive Function Placement with Distributed Deep Reinforcement Learning in RAN Slicing

Yu Tsukamoto, Haruhisa Hirayama, Seung Il Moon, Hiroyuki Shinbo

The 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring)

2022年6月

Virtualized terminal utilizing terahertz band radio waves for Beyond 5G : Link budget analysis

Yoshio Kunisawa, Yoshiaki Amano

The 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring)

2022年6月

Reconfigurable Meta-surface Reflectors: Practical Phase Adjustment Method and Experimental Validation

Takuya Ohto, Hiromi Matsuno, Yoshiaki Amano, Mitsutaka Okita(Japan Display Inc.), Daiichi Suzuki(Japan Display Inc.), Kazuki Matsunaga(Japan Display Inc.), Shinichiro Oka(Japan Display Inc.)

The 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring)

2022年6月

Optimal User Load and Energy Efficiency in User-Centric Cell-Free Wireless Networks

Fabian Göttsch,(Technical University of Berlin), Noboru Osawa, Takeo Ohseki, Kosuke Yamazaki, Giuseppe Caire(Technical University of Berlin)

The 2022 IEEE 95th Vehicular Technology Conference (VTC2022-Spring)

2022年6月

Development of a Direction-Variable Liquid Crystal Meta-surface Reflector

Hiromi Matsuno,Takuya Ohto,Yoshiaki Amano, Mitsutaka Okita(Japan Display Inc.), Daiichi Suzuki (Japan Display Inc.), Kazuki Matsunaga (Japan Display Inc.), Shinichiro Oka (Japan Display Inc.)

2022 IEEE International Conference on Communications (ICC 2022)

2022年5月

Point Cloud Denoising Using Normal Vector-Based Graph Wavelet Shrinkage

Ryosuke Watanabe, Keisuke Nonaka, Haruhisa Kato, Eduardo Pavez(USC), Tatsuya Kobayashi, Antonio Ortega(USC)

2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

2022年5月

Uplink-downlink duality and precoding strategies with partial csi in cell-free wireless networks

Fabian Göttsch(Technical University of Berlin), Noboru Osawa, Takeo Ohseki, Kosuke Yamazaki, Giuseppe Caire(Technical University of Berlin)

2022 IEEE Wireless Communications and Networking Conference (WCNC)

2022年4月

Using a Drone Sounder to Measure Channels for Cell-Free Massive MIMO Systems

Thomas Choi(USC), Jorge Gomez-Ponce(USC), Colton Bullard(USC), Issei Kanno, Masaaki Ito, Takeo Ohseki, Kosuke Yamazaki, Andreas F. Molisch(USC)

2022 IEEE Wireless Communications and Networking Conference (WCNC)

2022年4月

A simplified evaluation of protection distance in areal spectrum sharing

Toshinori Suzuki, Issei Kanno, Ryochi Kataoka, Hiroyasu Ishikawa, Kosuke Yamazaki, Yoji Kishi

IEICE Communications Express

2022年3月

Measurement and Evaluation of 28 GHz Propagation Characteristics in Specific Environments

Satoshi Ito, Takahiro Hayashi

IEEE Access (Online Journal)

2022年3月

Geographical Clustering of Path Loss Modeling for Wireless Emulation in Various Environments

Tatsuya Nagao, Takahiro Hayashi

European Conference on Antennas and Propagation (EuCAP2022)

2022年3月

Experimental Study of Loss and Variation of Human Blockage for Terahertz Wireless Communications

Keiji Yoshikawa, Takahiro Hayashi

16th European Conference on Antennas and Propagation (EuCAP2022)

2022年3月

ミリ波無線通信システムの受信信号強度とRGB-Dカメラ動画像を用いた通信端末の位置推定

三原 翔一郎, 吉川 慧司. 村上 隆秀, 新保 宏之

情報処理学会論文誌ジャーナル「ネットワークサービスと分散処理」特集

2022年2月

Feedback Control for QoS-Aware Radio Resource Allocation in Adaptive RAN

Haruhisa Hirayama, Yu Tsukamoto, Hiroyuki Shinbo

IEEE Access

2022年2月

Study on safe operation architecture in semi-autonomous remote control system for mobile robots using mobile communications

Ko Matsuhiro, Hiroyuki Shinbo, Hiroyuki Ishii, Atsuo Takanishi

2022 IEEE/SICE International Symposium on System Integration (SII)

2022年1月

Energy Efficiency of Uplink Cell-Free Massive MIMO With Transmit Power Control in Measured Propagation Channel

Thomas Choi(USC), Masaaki Ito, Issei Kanno, Jorge Gomez-Ponce(USC), Colton Bullard(USC), Takeo Ohseki, Kosuke Yamazaki, Andreas F. Molisch(USC)

IEEE Open Journal of Circuits and Systems

2021年12月

Proposal for a User-Centric Ran Architecture Towards Beyond 5G

Kosuke Yamazaki, Takeo Ohseki, Yoshiaki Amano, Hiroyuki Shinbo, Takahide Murakami, Yoji Kishi

2021 ITU Kaleidoscope: Connecting Physical and Virtual Worlds (ITU K)

2021年12月

Evaluation on Energy Efficiency of UE in UL Cell-Free Massive MIMO System With Power Control Methods

Masaaki Ito, Issei Kanno, Takeo Ohseki, Kosuke Yamazaki, Yoji Kishi, Thomas Choi (University of Southern California), Andreas Molisch (University of Southern California)

2021 IEEE Globecom Workshops (GC Wkshps)

2021年12月

Research ＆ Development of the advanced dynamic spectrum sharing system between different radio services

Hiroyuki Shinbo, Kousuke Yamazaki, Yoji Kishi

IEICE Transactions on Communications

2021年10月

On Operating Cellular Technologies in Unlicensed Spectrum Bands: A Review

Rony Kumer Saha

The 16th International Conference on Systems and Networks Communications (ICSNC 2021)

2021年10月

Unlicensed Spectrum Bands for Cellular Mobile Networks-An Overview

Rony Kumer Saha

The 16th International Conference on Systems and Networks Communications (ICSNC 2021)

2021年10月

Power Control based Fair Coexistence of LBT-Free 5G New Radio Small Cells with WiGig Networks

Rony Kumer Saha

The 16th International Conference on Systems and Networks Communications (ICSNC 2021)

2021年10月

Uplink Energy Efficiency of Cell-Free Massive MIMO With Transmit Power Control in Measured Propagation Channels

Thomas Choi(University of Southern California), Masaaki Ito, Issei Kanno, Takeo Oseki, Kosuke Yamazaki, Andreas F. Molisch(University of Southern California)

2021 IEEE Workshop on Signal Processing Systems (SiPS)

2021年10月

An Overview and Mechanism for the Coexistence of 5G NR-U (New Radio Unlicensed) in the Millimeter-Wave Spectrum for Indoor Small Cells

Rony Kumer Saha

Wireless Communications and Mobile Computing (Hindawi)

2021年9月

Demonstration Experiment of 5G Touchless Gate Utilized Directional Beam and Mobile Edge Computing

Naoto Tsumachi, Masaya Shibayama(KDDI), Ryuji Kobayashi(KDDI), Issei Kanno, Yasuhiro Suegara(KDDI)

IEICE Transactions on Communications

2021年9月

On The Building Map for Radio Propagation Prediction Using Machine Learning

Kazuya Inoue(Yokohama National University), Koichi Ichige(Yokohama National University), Tatsuya Nagao, Takahiro Hayashi

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

2021年9月

Data Traffic Offloading and Rate Control for Vehicles Using Radio Environment, Network Load and Route Planning

Takeo Ohseki, Kosuke Yamazaki, Daiki Maemoto(DENSO Corporation), Shigeki Kawai(DENSO Corporation), Tsuneo Nakata(DENSO Corporation), Akira Itou

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

2021年9月

Effect of antenna distribution on spectral and energy efficiency of cell-free massive MIMO

Masaaki Ito, Issei Kanno, Takeo Ohseki, Kosuke Yamazaki, Yoji Kishi, Thomas Choi(University of Southern California), Andreas F. Molisch(University of Southern California)

2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)

2021年9月

The Impact of Subspace-Based Pilot Decontamination in User-Centric Scalable Cell-Free Wireless Networks

Fabian Göttsch(Technical University of Berlin), Noboru Osawa, Takeo Ohseki, Kosuke Yamazaki, Giuseppe Caire(Technical University of Berlin)

2021 IEEE 22nd International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)

2021年9月

A method for Forecasting Available Spectrum Resources with Location-Dependent Error Margin for Dynamic Spectrum Access

Tatsuya Nagao, Takahiro Hayashi, Yoshiaki Amano

2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)

2021年9月

Coexistence of Cellular and IEEE 802.11 Technologies in Unlicensed Spectrum Bands -A Survey

Rony Kumer Saha

IEEE Open Journal of the Communications Society

2021年8月

R&D of technology for high reliability management in advanced 5G network to meet the various requirements of different communication services

Hiroyuki Shinbo, Takahide Murakami, Yu Tsukamoto, Yoji Kishi

2021 IEEE VTS 17th Asia Pacific Wireless Communications Symposium (APWCS)

2021年8月

Dynamic and Opportunistic Millimeter-Wave Spectrum Access in 5G New Radio Multi-Operator Cognitive Radio Networks

Rony Kumer Saha

The 17th International Conference on Wireless and Mobile Communications(ICWMC 2021)

2021年7月

On Operating 5G New Radio Indoor Small Cells in the 60 GHz Unlicensed Band

Rony Kumer Saha

The 17th International Conference on Wireless and Mobile Communications(ICWMC 2021)

2021年7月

On Achieving High Capacity using Small Cells in Multistory Buildings: A Review

Rony Kumer Saha

The Seventeenth International Conference on Wireless and Mobile Communications (ICWMC 2021)

2021年7月

Channel Estimation and Equalization for CP-OFDM-based OTFS in Fractional Doppler Channels

Noriyuki Hashimoto, Noboru Osawa, Kosuke Yamazaki, Shinsuke Ibi(Doshisha University)

2021 IEEE International Conference on Communications Workshops (ICC Workshops)

2021年6月

Spectrum Allocation and Reuse in 5G New Radio on Licensed and Unlicensed Millimeter-Wave Bands in Indoor Environments

Rony Kumer Saha

Mobile Information Systems (Hindawi)

2021年5月

Power-domain based dynamic millimeter-wave spectrum access techniques for in-building small cells in multioperator cognitive radio networks toward 6G

Rony Kumer Saha

Wireless Communications and Mobile Computing (Hindawi)

2021年5月

Millimeter-Wave Spectrum Utilization Improvement in Multi-Operator Networks: A Framework using the Equal Likelihood Criterion

Rony Kumer Saha

IEEE Access

2021年5月

Performance Analysis of In-building Small Cell Networks: Carrier Frequency Band Perspective

Rony Kumer Saha

The 20th International Conference on Networks (ICN 2021)

2021年4月

Spectrum Reuse in the Terahertz Band for In-building Small Cell Networks

Rony Kumer Saha

The 20th International Conference on Networks (ICN 2021)

2021年4月

Dynamic Spectrum Sharing in Multi-Operator Millimeter-Wave Indoor Systems

Rony Kumer Saha

The 20th International Conference on Networks (ICN 2021)

2021年4月

Positioning for User Equipment of a mmWave System Using RSSI and Stereo Camera Images

Shoichiro Mihara, Satoshi Ito, Takahide Murakami, Hiroyuki Shinbo

2021 IEEE Wireless Communications and Networking Conference (WCNC)

2021年3月

A Study on Urban Structure Map Extraction for Radio Propagation Prediction using XGBoost

Tatsuya Nagao, Takahiro Hayashi

The 15th European Conference on Antennas and Propagation (EuCAP 2021)

2021年3月

Radio Propagation Prediction Using Neural Network and Building Occupancy Estimation

Kazuya Inoue (Yokohama National University), Koichi Ichige (Yokohama National University), Tatsuya Nagao, Takahiro Hayashi

2020 International Symposium on Antennas and Propagation (ISAP 2020)

2021年1月

Dual Band and Dual Polarized Reflectarray Using Cross Dipole and Patch Elements

Nguyen Cong Oai(National Defense Academy), Naobumi Michishita(National Defense Academy), Hisashi Morishita(National Defense Academy), Hiromi Matsuno, Satoshi Ito, Takahiro Hayashi, Masayuki Nakano

2020 International Symposium on Antennas and Propagation (ISAP 2020)

2021年1月

Experimental Investigation of Optically Transparent Dual-Polarized Reflectarray with Suppressed Sidelobe Level

Lin Wang(Nihon Dengyo Kosaku Co., Ltd.), Hiroki Hagiwara(Nihon Dengyo Kosaku Co., Ltd.), Yuko Rikuta(Nihon Dengyo Kosaku Co., Ltd.), Toshiyuki Kobayashi (Nihon Dengyo Kosaku Co., Ltd.), Hiromi Matsuno, Takahiro Hayashi, Satoshi Ito, Masayuki Nakano

2020 International Symposium on Antennas and Propagation (ISAP 2020)

2021年1月

Direction and Location Estimation Algorithm with Power Gravity Point for Spectrum Sharing

Hiromi Matsuno, Yoshio Kunisawa, Takahiro Hayashi

2020 International Symposium on Antennas and Propagation (ISAP 2020)

2021年1月

Base Station Selection Method for RAT-Dependent TDOA Positioning in Mobile Network

Naoto Tsumachi, Takeo Ohseki, Kosuke Yamazaki

2021 IEEE Radio and Wireless Week (RWW 2021)

2021年1月

When RSSI encounters deep learning: An area localization scheme for pervasive sensing systems

Zhishu Shen, Tiehua Zhang(Swinburne University of Technology), Atsushi Tagami, Jiong Jin(Swinburne University of Technology)

Journal of Network and Computer Applications

2021年1月

Reliable and Efficient Dissemination of Traffic Events Among Vehicles Associated with Different Operators by Using Cellular V2X

Yosuke Segawa(The University of Electro-Communications), Suhua Tang(The University of Electro-Communications), Takaaki Ueno, Tomohiko Ogishi, Sadao Obana(The University of Electro-Communications)

2020 IEEE Vehicular Networking Conference (VNC)

2020年12月

Improvement of Response Time and Dielectric Loss in Thick Dendrimer/Liquid-Crystal Composites for Microwave-band Phase Control Applications

Yoichi Murakami(Tohoku University), Yosei Shibata(Tohoku University), Hiroyasu Sato(Tohoku University), Takahiro Ishinabe(Tohoku University), Hiromi Matsuno, Yoshiaki Amano, Qiang Chen(Tohoku University), Hideo Fujikake(Tohoku University)

The 27th International Display Workshops (IDW 2020)

2020年12月

A Study on Forecasting of Available Spectrum Resources for Sharing using Envelope Extraction

Tatsuya Nagao, Takahiro Hayashi, Yoshiaki Amano

2020 IEEE Asia-Pacific Microwave Conference (APMC 2020)

2020年12月

Ensemble Learning Method-Based Slice Admission Control for Adaptive RAN

Seung II Moon, Haruhisa Hirayama, Yu Tsukamoto, Shinobu Nanba, Hiroyuki Shinbo

2020 IEEE Global Communications Conference (GLOBECOM 2020) Workshops (GC Wkshps)

2020年12月

Evaluation of Asynchronous Successive Interference Cancellation for 5G in Shared Spectrum with Different Radio System

Ryochi Kataoka, Issei Kanno, Toshinori Suzuki(Tohoku Gakuin University), Hiroyasu Ishikawa(Nihon University), Kosuke YAMZAKI, Yoji Kishi

2020 International Conference on Emerging Technologies for Communications (ICETC 2020)

2020年12月

Modeling interference to reuse millimeter-wave spectrum to in-building small cells toward 6G

Rony Kumer Saha

2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall)

2020年11月

A dynamic exclusive-use spectrum access method for millimeter-wave mobile systems toward 6G

Rony Kumer Saha

The 92nd Vehicular Technology Conference (VTC2020-Fall)

2020年11月

Interweave shared-use model for dynamic spectrum access in millimeter-wave mobile systems for 6G

Rony Kumer Saha

The 92nd Vehicular Technology Conference (VTC2020-Fall)

2020年11月

A countrywide licensed full spectrum allocation method for millimeter-wave mobile systems for 6G

Rony Kumer Saha

The 92nd Vehicular Technology Conference (VTC2020-Fall)

2020年11月

A Theoretical framework toward realizing spectral and energy efficiencies of 6G mobile networks

Rony Kumer Saha

The 92nd Vehicular Technology Conference (VTC2020-Fall)

2020年11月

Asynchronous Successive Interference Cancellation for 5G Receiver Operateing in Shared Spectrum with Different Radio System

Issei Kanno, Ryochi Kataoka, Toshinori Suzuki(Tohoku Gakuin University), Hiroyasu Ishikawa(Nihon University), Kosuke Yamzaki, Yoji Kishi

The 54th Asilomar Conference on Signals, Systems and Computers (Asilomar 2020)

2020年11月

Approaches to Improve Millimeter-Wave Spectrum Utilization Using Indoor Small Cells in Multi-Operator Environments Toward 6G

Rony Kumer Saha

IEEE Access

2020年11月

Underlay Cognitive Radio Millimeter-Wave Spectrum Access for In-Building Dense Small Cells in Multi-Operator Environments Toward 6G

Rony Kumer Saha

The 23rd International Symposium on Wireless Personal Multimedia Communications (WPMC 2020)

2020年10月

A Flexible Licensed Spectrum Allocation Technique for Millimeter-Wave Mobile Systems Toward 6G

Rony Kumer Saha

The 23rd International Symposium on Wireless Personal Multimedia Communications (WPMC 2020)

2020年10月

On Application and Evaluation of Millimeter-Wave Spectrum Sharing, Trading and Reusing for Small Cells Toward Spectral and Energy Efficiencies of 6G

Rony Kumer Saha

The 23rd International Symposium on Wireless Personal Multimedia Communications (WPMC 2020)

2020年10月

Radio Quality Estimation on Drone Flight Sites for High Reliable Operation

Nobuo Suzuki(ATR), Hiromi Matsuno, Tatsuya Yoshioka(ATR), Toshinori Suzuki (Tohoku Gakuin University)

The 23rd International Symposium on Wireless Personal Multimedia Communications (WPMC 2020)

2020年10月

Fair Spectrum Allocation for Dynamic Spectrum Sharing between Different Radio Systems

Akio Ikami, Takahiro Hayashi, Yoshiaki Amano

The 23rd International Symposium on Wireless Personal Multimedia Communications (WPMC 2020)

2020年10月

Location Estimation Algorithm for Multiple Wave Sources Using Power Gravity Points

Hiromi Matsuno, Yoshio Kunisawa, Takahiro Hayashi

The 23rd International Symposium on Wireless Personal Multimedia Communications (WPMC 2020)

2020年10月

A New Paradigm for Spectrum Allocation in Millimeter-Wave Systems

Rony Kumer Saha

The 15th International Conference on Systems and Networks Communications (ICSNC 2020)

2020年10月

On Evaluating Spectrum Allocation Techniques in Millimeter-Wave Systems using Indoor Smalls for 5G/6G

Rony Kumer Saha

The 15th International Conference on Systems and Networks Communications (ICSNC 2020)

2020年10月

Hybrid Interweave-Underlay Millimeter-Wave Spectrum Access in Multi-Operator Cognitive Radio Networks Toward 6G

Rony Kumer Saha

The 15th International Conference on Systems and Networks Communications (ICSNC 2020)

2020年10月

A Massive Millimeter-Wave Spectrum Allocation and Exploitation Technique Toward 6G Mobile Networks

Rony Kumer Saha

The 15th International Conference on Systems and Networks Communications (ICSNC 2020)

2020年10月

Interoperator channel management for dynamic spectrum allocation between different radio systems

Akio Ikami, Takahiro Hayashi, Yoshiaki Amano

IEICE Communications Express

2020年10月

Licensed Countrywide Full-Spectrum Allocation: A New Paradigm for Millimeter-Wave Mobile Systems in 5G/6G Era

Rony Kumer Saha

IEEE Access

2020年9月

A Hybrid Interweave–Underlay Countrywide Millimeter-Wave Spectrum Access and Reuse Technique for CR Indoor Small Cells in 5G/6G Era

Rony Kumer Saha

Sensors (MDPI)

2020年7月

Detection and Location Estimation of Transmitter Using the Gradient of the Power Gravity Point for Dynamic Spectrum Sharing

Hiromi Matsuno, Yoshio Kunisawa, Takahiro Hayashi

2020 International Conference on Wireless Communications Signal Processing and Networking (WiSPNET 2020)

2020年6月

On exploiting millimeter-wave spectrum trading in countrywide mobile network operators for high spectral and energy efficiencies in 5G/6G Era

Rony Kumer Saha

Sensors (MDPI)

2020年6月

3D spatial reuse of multi-millimeter-wave spectra by ultra-dense in-building small cells for spectral and energy efficiencies of future 6g mobile networks

Rony Kumer Saha

Energies (MDPI)

2020年4月

A study on the variety and size of input data for radio propagation prediction using a deep neural network

Takahiro Hayashi, Tatsuya Nagao, Satoshi Ito

The 14th European Conference on Antennas and Propagation (EuCAP 2020)

2020年3月

Study on radio propagation prediction by machine learning using urban structure maps

Tatsuya Nagao, Takahiro Hayashi

The 14th European Conference on Antennas and Propagation (EuCAP 2020)

2020年3月

On Maximizing Energy and Spectral Efficiencies Using Small Cells in 5G and Beyond Networks

Rony Kumer Saha

Sensors (MDPI)

2020年3月

On Developing Techniques for Sharing Satellite Spectrum with Indoor Small Cells in 5G

Rony Kumer Saha

Energies (MDPI)

2020年2月

A Tactic for Architectural Exploitation of Indoor Small Cells for Dynamic Spectrum Sharing in 5G

Rony Kumer Saha

IEEE Access

2020年1月

Fast and Reliable Dissemination of Road and Traffic Information by Combining Cellular V2X and DSRC

Masashi Takakusaki (The University of Electro-Communications), Suhua Tang (The University of Electro-Communications), Takaaki Ueno, Tomohiko Ogishi, Sadao Obana (The University of Electro-Communications)

2019 IEEE Global Communications Conference (GLOBECOM) Workshops (GC Wkshps)

2019年12月

Virtual Full-Duplex Cooperative NOMA: Relay Selection and Interference Cancellation

Young-Bin Kim, Kosuke Yamazaki, Bang Chul Jung(Chungnam National University)

IEEE Transactions on Wireless Communications

2019年12月

Nationwide spectrum sharing of mobile network operators with indoor small cells

Rony Kumer Saha

2019 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN 2019)

2019年11月

Exploiting in-building small cell architecture for realizing dynamic spectrum sharing techniques

Rony Kumer Saha

2019 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN 2019)

2019年11月

Co-primary licensed spectrum sharing techniques for in-building small cells in 5G era

Rony Kumer Saha

2019 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN 2019)

2019年11月

Countrywide Mobile Spectrum Sharing with Indoor Small Cells for Massive Spectral and Energy Efficiencies in 5G and Beyond Mobile Networks

Rony Kumer Saha

Energies (MDPI)

2019年10月

A technique for massive spectrum sharing with ultra-dense in-building small cells in 5G era

Rony Kumer Saha

The 90th Vehicular Technology Conference (VTC2019-Fall)

2019年9月

Multi-band spectrum sharing with indoor small cells in hybrid satellite-mobile systems

Rony Kumer Saha

The 90th Vehicular Technology Conference (VTC2019-Fall)

2019年9月

Topographic Allocations of MmWave Access Points inside the Passenger Car of High Speed Trains

Feng Lu, Akira Yamaguchi, Kazunori Takeuchi, Hiroyuki Shinbo

Journal of Communications (JCM)

2019年8月

Diversity-multiplexing tradeoff of the two-user X-channel with two antennas

Young-bin Kim, Myung Gil Kang, Wan Choi

The 53rd IEEE International Conference on Communications (ICC 2019)

2019年7月

Realization of Licensed/Unlicensed Spectrum Sharing using eICIC in Indoor Small Cells for High Spectral and Energy Efficiencies of 5G Networks

Rony Kumer Saha

Energies (MDPI)

2019年7月

A Hybrid System and Technique for Sharing Multiple Spectrums of Satellite Plus Mobile Systems with Indoor Small Cells in 5G and Beyond Era

Rony Kumer Saha

IEEE Access

2019年6月

Enabling Technology and Proof-of-Concept Evaluation for RAN Architectural Migration toward 5G and Beyond Mobile Systems

Rony Kumer Saha, Kosuke Yamazaki

Engineering Journal

2019年5月

Hierarchical and Distributed Software-Defined Network to Reduce Control Load

Tetsuro Ueda, Akira Idoue, Eiji Utsunomiya

2019 IEEE Wireless Communications and Networking Conference (WCNC)

2019年4月

Backhaul Bandwidth Consideration for Workload Placement in Hierarchical Edge Cloud Architecture

Katsuo Yunoki, Hiroyuki Shinbo

2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)

2019年4月

Spectrum Sharing in Satellite-Mobile Multisystem using 3D In-Building Small Cells for High Spectral and Energy Efficiencies in 5G and Beyond Era

Rony Kumer Saha

IEEE Access

2019年3月

Sidelink Grouping Method for Multicasting D2D Signaling Messages with Considerations of Sidelink Transmission Power

Ryochi Kataoka, Akira Yamaguchi, Hiroyuki Shinbo

2019 IEEE 4th International Conference on Computer and Communication Systems (ICCCS)

2019年2月

Topographic Allocations of MmWave Access Points inside the Passenger Car of High Speed Trains

Feng Lu, Akira Yamaguchi, Kazunori Takeuchi, Hiroyuki Shinbo

2018 4th International Conference on Systems, Control and Communications (ICSCC)

2018年12月

Novel M-CORD based Multi-functional Split Enabled Virtualized Cloud RAN Testbed with Ideal Fronthaul

Rony Kumer Saha, Yu Tsukamoto, Shinobu Nanba, Kosuke Nishimura, Kosuke Yamazaki

2018 IEEE Globecom Workshops (GC Wkshps)

2018年12月

Flying Base-station for a Temporary Mobile Communication Area at a Disaster

Hiroyuki Shinbo, Yoshio Kunisawa, Takuro Sakai, Yoshinori Kitatsuji, Akira Endo(KDDI), Kazuya Tanaka(KDDI)

2018 5th International Conference on Information and Communication Technologies for Disaster Management (ICT-DM)

2018年12月

Carry-on State Service Handover between Edge Hosts for Latency Strict Applications in Mobile Networks

Katsuo Yunoki, Hiroyuki Shinbo

2018 21st International Symposium on Wireless Personal Multimedia Communications (WPMC)

2018年11月

A Technique for Cloud based Clustering and Spatial Resource Reuse and Scheduling of 3D In-building Small Cells using CoMP for High Capacity CRAN

Rony Kumer Saha,  Shinobu Nanba, Kosuke Nishimura

IEEE Access

2018年11月

Performance Analysis and Hardware Verification of Feature Detection Using Cyclostationarity in OFDM Signal

Akihide Nagamine(Tokyo Institute of Technology), Kanshiro Kashiki, Fumio Watanabe(Tokyo Institute of Technology), Jiro Hirokawa(Tokyo Institute of Technology)

IEICE Transactions on Communications

2018年10月

RAN Architectural Evolution Framework toward 5G and Beyond Cellular-An Overview

Rony Kumer Saha, Shinobu Nanba, Kosuke Nishimura, Young-bin Kim, Kosuke Yamazaki

2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

2018年9月

Rate-Energy Region in Wireless Information and Power Transfer: New Receiver Architecture and Practical Modulation

Young-Bin Kim, Dae Kyu Shin(Samsung Electronics), Wan Choi(KAIST)

IEEE Transactions on Communications

2018年6月

Adaptive Successive Transmission in Virtual Full-Duplex Cooperative NOMA

Young-bin Kim, Kosuke Yamazaki, Bang Chul Jung(Chungnam National University)

IEEE Wireless Communications and Networking Conference 2018 (WCNC 2018)

2018年4月