Takefumi Hiraguri

According to our database, Takefumi Hiraguri authored at least 58 papers between 2002 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Time Division Wireless Power Transfer Using Receiver Grouping.

Yuna Sawada, Shino Shiraki, Takahiro Matsuda, Takefumi Hiraguri, Kazuki Maruta, Tomotaka Kimura

IEEE Access, 2024

AI camera development sutitable for tomato harvest timing estimation.

Yasuhiro Okabe, Takefumi Hiraguri, Keita Endo, Hiroyuki Shimizu, Tomotaka Kimura, Naoki Yamada

Proceedings of the International Conference on Consumer Electronics - Taiwan, 2024

Evaluation of handover schemes and switching between different communication systems by drone radio stations.

Koyo Aoyama, Takefumi Hiraguri, Kakeru Hirata, Takahiro Matsuda, Tomotaka Kimura

Proceedings of the International Conference on Consumer Electronics - Taiwan, 2024

2023

Autonomous Drone-Based Pollination System Using AI Classifier to Replace Bees for Greenhouse Tomato Cultivation.

Takefumi Hiraguri, Hiroyuki Shimizu, Tomotaka Kimura, Takahiro Matsuda, Kazuki Maruta, Yoshihiro Takemura, Takeshi Ohya, Takuma Takanashi

IEEE Access, 2023

Drone Flight Experiment using RTK Positioning for Pear Pollination.

Naoki Yamada, Takefumi Hiraguri, Hiroyuki Shimizu, Tomotaka Kimura, Tomohito Shimada, Akane Shibasaki, Yoshihiro Takemura

Proceedings of the International Conference on Consumer Electronics - Taiwan, 2023

Adaptive Antenna Selection for Two-Hop Full-Duplex UAV Relay Networks.

Takumu Uda, Takahiro Matsuda, Takefumi Hiraguri

Proceedings of the International Conference on Consumer Electronics - Taiwan, 2023

Performance Improvement of Maximum Likelihood Wave Source Localization with LOS/NLOS Identification.

Takayuki Mori, Shinichi Murata, Takahiro Matsuda, Takefumi Hiraguri

Proceedings of the International Conference on Consumer Electronics - Taiwan, 2023

Agricultural Field Monitoring System Using DTN-based Drone Networks.

Kota Hatajiri, Tomotaka Kimura, Takefumi Hiraguri, Jun Cheng

Proceedings of the International Conference on Consumer Electronics - Taiwan, 2023

Directional beam antenna control in response to drone tilts.

Chikayo Hata, Takefumi Hiraguri, Takahiro Matsuda, Tetsuro Imai, Jiro Hirokawa

Proceedings of the International Conference on Consumer Electronics - Taiwan, 2023

TDM Scheduling Based on Receiver Grouping for Indoor Wireless Power Transfer.

Yuna Sawada, Shino Shiraki, Takahiro Matsuda, Takefumi Hiraguri, Kazuki Maruta, Tomotaka Kimura

Proceedings of the 28th Asia Pacific Conference on Communications, 2023

2022

Fast-Converging Constant Modulus Algorithm with Variable Step Size for Multibeam Massive MIMO.

Kentaro Nishimori, Kazuki Maruta, Takefumi Hiraguri, Hidehisa Shiomi

IEICE Trans. Commun., October, 2022

Semantic Segmentation Based Field Detection Using Drones.

Keita Endo, Tomotaka Kimura, Nobuhiko Itoh, Takefumi Hiraguri

Proceedings of the IEEE International Conference on Consumer Electronics - Taiwan, 2022

2021

Traffic Reduction Technologies and Data Aggregation Control to Minimize Latency in IoT Systems.

Hideaki Yoshino, Kenko Ota, Takefumi Hiraguri

IEICE Trans. Commun., July, 2021

Study of flower image classification using deep learning to support agricultural pollination.

Eisuke Fukuyama, Tomotaka Kimura, Nobuhiko Itoh, Takefumi Hiraguri

Proceedings of the IEEE International Conference on Consumer Electronics-Taiwan, 2021

2020

A Cooperative Transmission Scheme in Drone-Based Networks.

Takefumi Hiraguri, Kentaro Nishimori, Isamu Shitara, Tsutomu Mitsui, Takuya Shindo, Tomotaka Kimura, Takahiro Matsuda, Hideaki Yoshino

IEEE Trans. Veh. Technol., 2020

Novel Unmanned Aerial Vehicle-Based Line-of-Sight MIMO Configuration Independent of Transmitted Distance Using Millimeter Wave.

Naoki Matsumura, Kentaro Nishimori, Ryotaro Taniguchi, Takefumi Hiraguri, Takashi Tomura, Jiro Hirokawa

IEEE Access, 2020

Adaptive Direction Control for UAV Full-Duplex Relay Networks Using Multiple Directional Antennas.

Takahiro Matsuda, Megumi Kaneko, Takefumi Hiraguri, Kentaro Nishimori, Tomotaka Kimura, Akihiro Nakao

IEEE Access, 2020

Improving QoE Fairness Using the IEEE 802.11e Priority Control Mechanism.

Kosuke Shikama, Takahiro Matsuda, Takefumi Hiraguri, Takanori Hayashi, Ryo Yamamoto

Proceedings of the IEEE International Conference on Consumer Electronics - Taiwan, 2020

A Study on Quality of Experience with Scalable Video Coding Transmission Rate Control in Wireless LAN Multicast Environments with Background Traffic.

H. Iida, Isamu Shitara, Hideaki Yoshino, Takahiro Matsuda, Takefumi Hiraguri

Proceedings of the IEEE International Conference on Consumer Electronics - Taiwan, 2020

2019

Blind Adaptive Array by Constant Modulus with Variable Step Size for Multi-beam Massive MIMO.

Kentaro Nishimori, Kazuki Maruta, Takefumi Hiraguri

Proceedings of the 23rd International ITG Workshop on Smart Antennas, 2019

Adaptive Control of Nonstatistical Sensor Data Aggregation to Minimize Latency in IoT Gateways.

Hideaki Yoshino, Kenko Ota, Takefumi Hiraguri

Proceedings of the 29th International Telecommunication Networks and Applications Conference, 2019

Optimal Parameters of Nonstatistical Sensor Data Aggregation Minimizing Latency in IoT Gateway.

Hideaki Yoshino, Kenko Ota, Takefumi Hiraguri

Proceedings of the 2019 IEEE Global Communications Conference, 2019

2018

Queueing Delay Analysis and Optimization of Statistical Data Aggregation and Transmission Systems.

Hideaki Yoshino, Kenko Ota, Takefumi Hiraguri

IEICE Trans. Commun., 2018

Multi-Beam Massive MIMO with Beam-Selection Using Only Amplitude Information in Uplink Channel.

Fumiya Muramatsu, Kentaro Nishimori, Ryotaro Taniguchi, Takefumi Hiraguri

IEICE Trans. Commun., 2018

Effect of User Antenna Selection on Block Beamforming Algorithms for Suppressing Inter-User Interference in Multiuser MIMO System.

Nobuyoshi Kikuma, Kentaro Nishimori, Takefumi Hiraguri

IEICE Trans. Commun., 2018

Novel Access Control Scheme with Collision Detection Utilizing MIMO Transmission Procedure in WLAN Systems.

Takefumi Hiraguri, Kentaro Nishimori, Yoshiaki Morino, Mamoru Ugajin, Hideaki Yoshino

IEICE Trans. Commun., 2018

Adaptive Beam-Frequency Allocation Algorithm with Position Uncertainty for Millimeter-Wave MIMO Systems.

Rafail Ismayilov, Megumi Kaneko, Takefumi Hiraguri, Kentaro Nishimori

Proceedings of the 87th IEEE Vehicular Technology Conference, 2018

Adaptive Control of Statistical Data Aggregation to Minimize Latency in IoT Gateway.

Hideaki Yoshino, Kenko Ota, Takefumi Hiraguri

Proceedings of the 2018 Global Information Infrastructure and Networking Symposium, 2018

2017

An (<i>N</i>+<i>N</i>²)-Mixer Architecture for a High-Image-Rejection Wireless Receiver with an N-Phase Active Complex Filter.

Mamoru Ugajin, Takuya Shindo, Tsuneo Tsukahara, Takefumi Hiraguri

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017

Proposal of overhead-less access control scheme for multi-beam massive MIMO transmission in WLAN systems.

Yoshiaki Morino, Takefumi Hiraguri, Hideaki Yoshino, Kentaro Nishimori

Proceedings of the 16th Annual Mediterranean Ad Hoc Networking Workshop, 2017

2016

A Novel Collision Avoidance Scheme Using Optimized Contention Window in Dense Wireless LAN Environments.

Yoshiaki Morino, Takefumi Hiraguri, Hideaki Yoshino, Kentaro Nishimori, Takahiro Matsuda

IEICE Trans. Commun., 2016

FFT-Based Block Diagonalization at User Terminal for Implicit Beamforming in Multiuser MIMO System.

Hayate Kimoto, Kentaro Nishimori, Takefumi Hiraguri, Hideo Makino

IEICE Trans. Commun., 2016

2015

Survey of Transmission Methods and Efficiency Using MIMO Technologies for Wireless LAN Systems.

Takefumi Hiraguri, Kentaro Nishimori

IEICE Trans. Commun., 2015

2014

Effective Method for Wind and Solar Power Grid Systems Based on Recurrent Neural Networks.

Keisuke Kimura, Takayuki Kimura, Takefumi Hiraguri, Kenya Jin'no

J. Adv. Comput. Intell. Intell. Informatics, 2014

Multicast Transmission Access Control Methods for Various Wireless LAN Applications.

Toshiyuki Ogawa, Takefumi Hiraguri, Kentaro Nishimori, Hideaki Yoshino, Kenya Jin'no

IEICE Trans. Commun., 2014

Transmission Rate by User Antenna Selection for Block Diagonalization Based Multiuser MIMO System.

Kentaro Nishimori, Takefumi Hiraguri, Hideo Makino

IEICE Trans. Commun., 2014

Analog Decoding Method for Simplified Short-Range MIMO Transmission.

Ryochi Kataoka, Kentaro Nishimori, Takefumi Hiraguri, Naoki Honma, Tomohiro Seki, Ken Hiraga, Hideo Makino

IEICE Trans. Commun., 2014

Analysis evaluation of collision detection scheme utilizing MIMO transmission.

Yoshiaki Morino, Takefumi Hiraguri, Toshiyuki Ogawa, Hideaki Yoshino, Kentaro Nishimori

Proceedings of the IEEE 10th International Conference on Wireless and Mobile Computing, 2014

Canonical deterministic particle swarm optimization to sustain global search.

Kenya Jin'no, Takuya Shindo, Takuya Kurihara, Takefumi Hiraguri, Hideaki Yoshino

Proceedings of the 2014 IEEE International Conference on Systems, Man, and Cybernetics, 2014

Virtualization-capable multichannel WiFi system with a coordinated downlink transmission technique.

Yozo Shoji, Takefumi Hiraguri

Proceedings of the 9th International Symposium on Communication Systems, 2014

2013

Queuing Scheme for Improved Downlink Throughput on WLANs.

Takefumi Hiraguri, Kengo Nagata, Toshiyuki Ogawa, Takahiro Ueno, Kenya Jin'no, Kentaro Nishimori

Wirel. Pers. Commun., 2013

User-Oriented QoS Control Method Based on CSMA/CA for IEEE802.11 Wireless LAN System.

Akira Kishida, Masashi Iwabuchi, Toshiyuki Shintaku, Tetsu Sakata, Takefumi Hiraguri, Kentaro Nishimori

IEICE Trans. Commun., 2013

Non-iterative Algorithm of MIMO Adaptive Array Based on Correlation Matrix Including Parasitic Antennas.

Naoki Honma, Kentaro Nishimori, Takefumi Hiraguri, Yoshitaka Tsunekawa

IEICE Trans. Commun., 2013

2011

Power Saving Control Method for Battery-Powered Portable Wireless LAN Access Points in an Overlapping BSS Environment.

Masakatsu Ogawa, Takefumi Hiraguri, Kentaro Nishimori, Naoki Honma, Kazuhiro Takaya, Kazuo Murakawa

IEICE Trans. Commun., 2011

Development of Multi Channel Ad-Hoc Network System.

Kentaro Nishimori, Takefumi Hiraguri, Masakatsu Ogawa, Naoki Honma

IEICE Trans. Commun., 2011

Transmission Queuing Schemes for Improving Downlink Throughput on IEEE 802.11 WLANs.

Takefumi Hiraguri, Toshiyuki Ogawa, Takahiro Ueno, Kentaro Nishimori, Kenya Jin'no

Proceedings of 20th International Conference on Computer Communications and Networks, 2011

2010

Frame Resource Allocation Schemes that Improve System Capacity and Latency Performance of Time-Division Duplex Multihop Relay Systems.

Youhei Ohno, Tatsuya Shimizu, Takefumi Hiraguri, Masashi Nakatsugawa

IEICE Trans. Commun., 2010

Transmission History Based Distributed Adaptive Contention Window Adjustment Algorithm Cooperating with Automatic Rate Fallback for Wireless LANs.

Masakatsu Ogawa, Takefumi Hiraguri, Kentaro Nishimori, Kazuhiro Takaya, Kazuo Murakawa

IEICE Trans. Commun., 2010

A Novel Interference Avoidance Technique on Mobile Wireless Routers Using IEEE802.11n PSMP.

Akira Kishida, Takefumi Hiraguri, Masakatsu Ogawa, Kentaro Nishimori, Naoki Honma, Tetsu Sakata

IEICE Trans. Commun., 2010

A Stochastic Approach to Design MIMO Antenna with Parasitic Elements Based on Propagation Characteristics.

Naoki Honma, Kentaro Nishimori, Riichi Kudo, Yasushi Takatori, Takefumi Hiraguri, Masato Mizoguchi

IEICE Trans. Commun., 2010

2009

Power Saving Control for Battery-Powered Portable WLAN APs.

Masakatsu Ogawa, Takefumi Hiraguri

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009

Power Saving Scheme Suitable for Wireless LAN in Multimedia Communications.

Takefumi Hiraguri, Masakatsu Ogawa, Makoto Umeuchi, Tetsu Sakata

IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009

Novel frame structures to improve system capacity and latency performance of a time-division duplex multihop relay wireless access system.

Youhei Ohno, Tatsuya Shimizu, Takefumi Hiraguri, Masashi Nakatsugawa

Proceedings of the 2009 IEEE Wireless Communications and Networking Conference, 2009

Study of power saving scheme suitable for wireless LAN in multimedia communication.

Takefumi Hiraguri, Masakatsu Ogawa, Makoto Umeuchi, Tetsu Sakata

Proceedings of the 2009 IEEE Wireless Communications and Networking Conference, 2009

A novel interference avoidance technique on MAC protocol for Wireless LAN-WIMAX relay.

Akira Kishida, Takefumi Hiraguri, Masakatsu Ogawa

Proceedings of the IEEE 20th International Symposium on Personal, 2009

2008

Proposal of Wireless Traffic Control Schemes for Wireless LANs.

Takefumi Hiraguri, Takeo Ichikawa, Masataka Iizuka, Shuji Kubota

IEICE Trans. Commun., 2008

2004

Development of traffic control mechanisms for IEEE 802.11 wireless LANs without QoS support functionality.

Takefumi Hiraguri, Yasuhiko Inoue, Shuji Kubota

Proceedings of the 1st IEEE International Symposium on Wireless Communication Systems, 2004

2002

Novel multiple access protocol for voice over IP in wireless LAN.

Takefumi Hiraguri, Takeo Ichikawa, Masataka Iizuka, Masahiro Morikura

Proceedings of the Seventh IEEE Symposium on Computers and Communications (ISCC 2002), 2002