Yukihiko Okumura
According to our database1,
Yukihiko Okumura
authored at least 107 papers
between 2009 and 2021.
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Bibliography
2021
Base Station Cooperation Technologies Using 28GHz-Band Digital Beamforming in High-Mobility Environments.
IEICE Trans. Commun., 2021
Two-Step User Selection Algorithm in Multi-User Massive MIMO with Hybrid Beamforming for 5G Evolution.
IEICE Trans. Commun., 2021
28 GHz-Band Experimental Trial Using the Shinkansen in Ultra High-Mobility Environment for 5G Evolution.
IEICE Trans. Commun., 2021
2020
Experimental Field Trials on MU-MIMO Transmissions for High SHF Wide-Band Massive MIMO in 5G.
IEEE Trans. Wirel. Commun., 2020
Outdoor Experimental Trials of Millimeter-Wave Base Station Cooperation with Digital Beamforming in High-Mobility Environments for 5G Evolution.
Proceedings of the 92nd IEEE Vehicular Technology Conference, 2020
Two Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments for 5G Evolution.
Proceedings of the 91st IEEE Vehicular Technology Conference, 2020
Proceedings of the 91st IEEE Vehicular Technology Conference, 2020
2019
IEICE Trans. Commun., 2019
Field Trial of 28GHz Band 5G Downlink Massive MIMO Employing Beam Tracking in Railway Environment.
IEICE Trans. Commun., 2019
Performance Evaluation of Low Complexity Digital Beamforming Algorithms by Link-Level Simulations and Outdoor Experimental Trials for 5G Low-SHF-Band Massive MIMO.
IEICE Trans. Commun., 2019
Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation.
IEICE Trans. Commun., 2019
Experimental Study of Large-Scale Coordinated Multi-User MIMO for 5G Ultra High-Density Distributed Antenna Systems.
IEICE Trans. Commun., 2019
Performance Evaluation of Downlink Multi-User Massive MIMO with Configurable Active Antenna System and Inter Access Point Coordination in Low-SHF-Band.
IEICE Trans. Commun., 2019
Radio Propagation Prediction Method Using Point Cloud Data Based on Hybrid of Ray-Tracing and Effective Roughness Model in Urban Environments.
IEICE Trans. Commun., 2019
IEICE Trans. Commun., 2019
Two-Step User Selection Algorithm for Multi-User Massive MIMO with Hybrid Beamforming.
Proceedings of the 22nd International Symposium on Wireless Personal Multimedia Communications, 2019
Proceedings of the 2019 IEEE Wireless Communications and Networking Conference, 2019
Proceedings of the 89th IEEE Vehicular Technology Conference, 2019
Parameter Estimation for Block Diagonalization Based Hybrid Beamforming in Massive MIMO Communications.
Proceedings of the 90th IEEE Vehicular Technology Conference, 2019
Uplink Multi-User Massive MIMO Using Gaussian BP in Highly Correlated Actual Environments.
Proceedings of the 90th IEEE Vehicular Technology Conference, 2019
5G R&D Achievements for High-Data-Rate and Low-Power-Consumption Radio Access Technologies with Higher-Frequency-Band and Wider-Bandwidth Massive MIMO.
Proceedings of the 89th IEEE Vehicular Technology Conference, 2019
Proceedings of the 90th IEEE Vehicular Technology Conference, 2019
5G R&D Activities for High Capacity Technologies with Ultra High-Density Multi-Band and Multi-Access Layered Cells.
Proceedings of the 89th IEEE Vehicular Technology Conference, 2019
Proceedings of the 90th IEEE Vehicular Technology Conference, 2019
R&D Activities for 5G Radio Access Technologies Using SHF Bands and Co-Creation of New Services Using 5G.
Proceedings of the International Symposium on VLSI Design, Automation and Test, 2019
2018
IEICE Trans. Commun., 2018
Field Experimental DL MU-MIMO Evaluations of Low-SHF-Band C-RAN Massive MIMO System with over 100 Antenna Elements for 5G.
Proceedings of the 88th IEEE Vehicular Technology Conference, 2018
Indoor Experimental Trial on Hybrid 16-Beam Spatial-Multiplexing for High SHF Wide-Band Massive MIMO in 5G.
Proceedings of the 88th IEEE Vehicular Technology Conference, 2018
Outdoor DL MU-MIMO and Inter Access Point Coordination Performance of Low-SHF-Band C-RAN Massive MIMO System for 5G.
Proceedings of the 87th IEEE Vehicular Technology Conference, 2018
Experimental Evaluation of Starved AP Identification and Management Schemes in Mobile Cooperative WLAN System toward 5G.
Proceedings of the 87th IEEE Vehicular Technology Conference, 2018
Proceedings of the 87th IEEE Vehicular Technology Conference, 2018
Outdoor Experimental Trials of Advanced Downlink NOMA Using Smartphone-Sized Devices.
Proceedings of the 87th IEEE Vehicular Technology Conference, 2018
Proceedings of the 29th IEEE Annual International Symposium on Personal, 2018
Proceedings of the 29th IEEE Annual International Symposium on Personal, 2018
Cell selection scheme for handover reduction based on moving direction and velocity of UEs for 5G multi-layered radio access networks.
Proceedings of the 2018 International Conference on Information Networking, 2018
2017
Improving Accuracy of Ray-Tracing Prediction in Non Line-of-Sight (NLOS) Urban Street Cell Environment beyond 6GHz.
IEICE Trans. Commun., 2017
5G Distributed Massive MIMO with Ultra-High Density Antenna Deployment in Low SHF Bands.
IEICE Trans. Commun., 2017
Experimental Trial of 5G Super Wideband Wireless Systems Using Massive MIMO Beamforming and Beam Tracking Control in 28GHz Band.
IEICE Trans. Commun., 2017
Field Experimental Evaluation on 5G Millimeter Wave Radio Access for Mobile Communications.
IEICE Trans. Commun., 2017
Path Loss Model for Outdoor-to-Indoor Corridor Up to 40GHz Band in Microcell Environments.
IEICE Trans. Commun., 2017
Throughput Improvement of Mobile Cooperative WLAN Systems with Identifying and Management of Starved APs/UEs for 5G.
IEICE Trans. Commun., 2017
Digital beamforming algorithm for 5G low-SHF-band massive MIMO with intersite coordination.
Proceedings of the 20th International Symposium on Wireless Personal Multimedia Communications, 2017
Field experimental evaluation of higher rank MIMO in quad-directional UE antenna configuration for 5G radio access system.
Proceedings of the 20th International Symposium on Wireless Personal Multimedia Communications, 2017
Proceedings of the 20th International Symposium on Wireless Personal Multimedia Communications, 2017
5G massive MIMO with digital beamforming and two-stage channel estimation for low SHF band.
Proceedings of the 2017 Wireless Days, Porto, Portugal, March 29-31, 2017, 2017
Proceedings of the 2017 IEEE Wireless Communications and Networking Conference Workshops, 2017
Proceedings of the 85th IEEE Vehicular Technology Conference, 2017
Field Experiment of High-Capacity Technologies for 5G Ultra High-Density Distributed Antenna Systems.
Proceedings of the 85th IEEE Vehicular Technology Conference, 2017
Antenna Deployment of 5G Ultra High-Density Distributed Massive MIMO by Low-SHF-Band Indoor and Outdoor Experiments.
Proceedings of the 86th IEEE Vehicular Technology Conference, 2017
User Selection and Rank Adaptation for Multi-User Massive MIMO with Hybrid Beamforming.
Proceedings of the 86th IEEE Vehicular Technology Conference, 2017
5G Experimental Trial of 28 GHz Band Super Wideband Transmission Using Beam Tracking in Super High Mobility Environment.
Proceedings of the 85th IEEE Vehicular Technology Conference, 2017
Field Experimental Evaluation of Low SHF 5G Radio Access System Employing Higher Rank MIMO.
Proceedings of the 85th IEEE Vehicular Technology Conference, 2017
Proceedings of the Ninth International Conference on Ubiquitous and Future Networks, 2017
2016
Cluster Power Variation Characteristics for 3GHz-Band MIMO Communication System in a Crowded Indoor Environment.
IEICE Trans. Commun., 2016
Proceedings of the 19th International Symposium on Wireless Personal Multimedia Communications, 2016
Field experimental evaluation of beamtracking and latency performance for 5G mmWave radio access in outdoor mobile environment.
Proceedings of the 27th IEEE Annual International Symposium on Personal, 2016
Experiment of 28 GHz Band 5G super wideband transmission using beamforming and beam tracking in high mobility environment.
Proceedings of the 27th IEEE Annual International Symposium on Personal, 2016
Proceedings of the Eighth International Conference on Ubiquitous and Future Networks, 2016
Proceedings of the 10th International Conference on Signal Processing and Communication Systems, 2016
Proceedings of the 2016 IEEE International Conference on Communication Systems, 2016
Antenna deployment for 5G ultra high-density distributed antenna system at low SHF bands.
Proceedings of the 2016 IEEE Conference on Standards for Communications and Networking, 2016
2015
IEICE Trans. Commun., 2015
Joint Processing of Analog Fixed Beamforming and CSI-Based Precoding for Super High Bit Rate Massive MIMO Transmission Using Higher Frequency Bands.
IEICE Trans. Commun., 2015
Experimental Study on Ray Based Spatio-Temporal Channel Characteristics in Indoor Environment.
IEICE Trans. Commun., 2015
Proceedings of the IEEE 82nd Vehicular Technology Conference, 2015
Performance of Fiber-Optic Inband Relaying against Self-Interference in Both Uplink and Downlink.
Proceedings of the IEEE 82nd Vehicular Technology Conference, 2015
Field Experiments on Combination of Downlink CoMP and Smart Vertical MIMO in LTE-Advanced.
Proceedings of the IEEE 82nd Vehicular Technology Conference, 2015
Channel Access Acquisition Mechanism Coupled with Cellular Network for Unlicensed Spectrum.
Proceedings of the IEEE 81st Vehicular Technology Conference, 2015
Indoor and outdoor experimental trials in 28-GHz band for 5G wireless communication systems.
Proceedings of the 26th IEEE Annual International Symposium on Personal, 2015
Proceedings of the 26th IEEE Annual International Symposium on Personal, 2015
Experimental evaluation of downlink transmission and beam tracking performance for 5G mmW radio access in indoor shielded environment.
Proceedings of the 26th IEEE Annual International Symposium on Personal, 2015
Proceedings of the IEEE International Conference on Communication, 2015
Proceedings of the 2015 IEEE Globecom Workshops, San Diego, CA, USA, December 6-10, 2015, 2015
Field Experiments on 5G mmW Radio Access with Beam Tracking in Small Cell Environments.
Proceedings of the 2015 IEEE Globecom Workshops, San Diego, CA, USA, December 6-10, 2015, 2015
Channel estimation for super high bit rate massive MIMO systems using joint processing of analog fixed beamforming and CSI-based precoding.
Proceedings of the IEEE Conference on Standards for Communications and Networking, 2015
2014
Investigation on Interference Rejection Combining Receiver for Space-Frequency Block Code Transmit Diversity in LTE-Advanced Downlink.
IEEE Trans. Veh. Technol., 2014
An advanced Wi-Fi data service platform coupled with a cellular network for future wireless access.
IEEE Commun. Mag., 2014
Study on Characteristics of Human Body Shadowing in High Frequency Bands: Radio Wave Propagation Technology for Future Radio Access and Mobile Optical Networks.
Proceedings of the IEEE 80th Vehicular Technology Conference, 2014
Investigation on Feedback Channel State Information for Interference Rejection Combining Receiver in LTE-Advanced Downlink.
Proceedings of the IEEE 79th Vehicular Technology Conference, 2014
Proceedings of the IEEE 80th Vehicular Technology Conference, 2014
Cluster Power Variation Estimation for MIMO Channel Modeling in Crowded Indoor Environment.
Proceedings of the IEEE 80th Vehicular Technology Conference, 2014
Performance Analysis of Fiber-Optic Inband Relaying in the Presence of Self-Interference.
Proceedings of the IEEE 80th Vehicular Technology Conference, 2014
Proceedings of the IEEE 80th Vehicular Technology Conference, 2014
Joint fixed beamforming and eigenmode precoding for super high bit rate massive MIMO systems using higher frequency bands.
Proceedings of the 25th IEEE Annual International Symposium on Personal, 2014
Performance evaluation for different types of small cells with optimized transmssion power.
Proceedings of the IEEE International Conference on Communication Systems, 2014
Evaluation of 30 Gbps super high bit rate mobile communications using channel data in 11 GHz band 24×24 MIMO experiment.
Proceedings of the IEEE International Conference on Communications, 2014
Requirements of power amplifier on super high bit rate massive MIMO OFDM transmission using higher frequency bands.
Proceedings of the 2014 IEEE GLOBECOM Workshops, Austin, TX, USA, December 8-12, 2014, 2014
2013
Dynamic Channel Modeling Using Particle Filtering for Wireless MIMO Systems in Urban Environment.
IEICE Trans. Commun., 2013
Performance Evaluation of Interference Rejection Combining Receiver in Heterogeneous Networks for LTE-Advanced Downlink.
IEICE Trans. Commun., 2013
Investigation of Inter-Cell Interference Coordination Applying Transmission Power Reduction in Heterogeneous Networks for LTE-Advanced Downlink.
IEICE Trans. Commun., 2013
Investigation on Transmission Power Control Suitable for Heterogeneous Network Employing Cell Range Expansion in LTE-Advanced Uplink.
IEICE Trans. Commun., 2013
Investigation on interference rejection combining receiver in heterogeneous networks for LTE-Advanced downlink.
Proceedings of the 14th IEEE Workshop on Signal Processing Advances in Wireless Communications, 2013
Cell identification performance based on hierarchical synchronization channels in dense small cell environment.
Proceedings of the 14th IEEE Workshop on Signal Processing Advances in Wireless Communications, 2013
Proceedings of the International Symposium on Intelligent Signal Processing and Communication Systems, 2013
Performance Evaluation of Reduced Power Inter-cell Interference Coordination for Downlink in LTE-Advanced Heterogeneous Networks.
Proceedings of the European Wireless 2013, 2013
2012
Impact on Inter-Cell Interference of Reference Signal for Interference Rejection Combining Receiver in LTE-Advanced Downlink.
IEICE Trans. Commun., 2012
Link Performance Modeling of Interference Rejection Combining Receiver in System Level Evaluation for LTE-Advanced Downlink.
IEICE Trans. Commun., 2012
Investigation on advanced receiver employing interference rejection combining for space-frequency block code transmit diversity in LTE-Advanced downlink.
Proceedings of the 23rd IEEE International Symposium on Personal, 2012
Investigation on link performance modeling of advanced receiver employing interference rejection combining in system level evaluation for LTE-Advanced downlink.
Proceedings of the 2012 International Symposium on Wireless Communication Systems (ISWCS), 2012
2011
Performance Investigation on Cell Selection Schemes Associated with Downlink Inter-Cell Interference Coordination in Heterogeneous Networks for LTE-Advanced.
IEICE Trans. Commun., 2011
Investigation on Data Signal Muting to Improve Channel Estimation Accuracy in Downlink Coordinated Multiple-Point Transmission in LTE-Advanced.
IEICE Trans. Commun., 2011
Investigation on improvement in channel estimation accuracy using data signal muting in downlink coordinated multiple-point transmission and reception in LTE-Advanced.
Proceedings of the 2011 IEEE Wireless Communications and Networking Conference, 2011
Investigation on Cell Selection Methods Associated with Inter-cell Interference Coordination in Heterogeneous Networks for LTE-Advanced Downlink.
Proceedings of the European Wireless 2011, April 27-29, 2011, Vienna, Austria., 2011
2010
Proceedings of IEEE International Conference on Communications, 2010
2009
Proceedings of the 69th IEEE Vehicular Technology Conference, 2009
Proceedings of the IEEE 20th International Symposium on Personal, 2009
Capacity achievable by spectrum sharing with adaptive transmit power control: Based on field measurements.
Proceedings of the 4th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, 2009