Hirokazu Sawada

According to our database, Hirokazu Sawada authored at least 37 papers between 2007 and 2024.

Collaborative distances:

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

2024

Path Clustering for Radio Propagation Prediction With Moving Object in Indoor Environment.

Masayuki Shirakawa, Rei Furukawa, Gilbert Ching, Kenshi Horihata, Yukiko Kishiki, Hirokazu Sawada, Azril Haniz, Takeshi Matsumura, Homare Murakami, Fumihide Kojima

IEEE Access, 2024

Deep Learning-Based Radio Estimation Using a Semi-Automatically Created Indoor Building Information.

Changwoo Pyo, Hirokazu Sawada, Takeshi Matsumura

Proceedings of the IEEE Wireless Communications and Networking Conference, 2024

A Simple Access Point Synchronization for THz Wireless Access System.

Michiharu Nakamura, Hirokazu Sawada, Takeshi Matsumura

Proceedings of the IEEE Wireless Communications and Networking Conference, 2024

2023

A Deep Learning-Based Indoor Radio Estimation Method Driven by 2.4 GHz Ray-Tracing Data.

Changwoo Pyo, Hirokazu Sawada, Takeshi Matsumura

IEEE Access, 2023

Novel Ray-tracing Received Power Adjustment Approach Based on the Ratio of Wavelength and Object Size.

Azril Haniz, Hikaru Kawasaki, Genki Hosokawa, Takuro Urushibata, Yasuyuki Yanagi, Tadahide Kunitachi, Hirokazu Sawada, Takeshi Matsumura

Proceedings of the 34th IEEE Annual International Symposium on Personal, 2023

2022

RadioResUNet: Wireless Measurement by Deep Learning for Indoor Environments.

Chang Woo Pyo, Hirokazu Sawada, Takeshi Matsumura

Proceedings of the 25th International Symposium on Wireless Personal Multimedia Communications, 2022

Interference Analysis for Spectrum Sharing of Multiple Local 5G gNBs by Different Operators in a Building.

Homare Murakami, Hirokazu Sawada, Takeshi Matsumura

Proceedings of the 25th International Symposium on Wireless Personal Multimedia Communications, 2022

Development and Initial Implementation of Large-scale Wireless Emulator Toward Beyond 5G.

Takeshi Matsumura, Hirokazu Sawada, Toshiyuki Miyachi, Fumihide Kojima, Hiroaki Harai, Ayaka Sakaguchi, Yoshihisa Nishigori, Hiroshi Harada

Proceedings of the 25th International Symposium on Wireless Personal Multimedia Communications, 2022

Investigation of Beyond 5G-based Physical Radio Node Emulation for Large-scale Wireless Emulator.

Takeshi Matsumura, Hirokazu Sawada

Proceedings of the 25th International Symposium on Wireless Personal Multimedia Communications, 2022

Design of Radio Wave Visualization System for Office Planners and Verification of Propagation Area Visualization.

Ayaka Sakaguchi, Kensuke Sakamoto, Yuki Yamakawa, Waka Mimura, Toshiyuki Miyachi, Fumihide Kojima, Hiroaki Harai, Hirokazu Sawada, Homare Murakami, Takeshi Matsumura

Proceedings of the 2022 IEEE 33rd Annual International Symposium on Personal, 2022

A Large-Scale Wireless Emulation Environment with Interaction between Physical and Virtual Radio Nodes for Beyond 5G Systems.

Fumihide Kojima, Toshiyuki Miyachi, Takeshi Matsumura, Hirokazu Sawada, Hiroaki Harai, Hiroshi Harada

Proceedings of the 2022 IEEE 33rd Annual International Symposium on Personal, 2022

Long-term Power Fluctuation and Delay Spread Characteristics in a Factory Environment at 2.4 GHz and 5.2 GHz Bands.

Azril Haniz, Hirokazu Sawada, Hikaru Kawasaki, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima, Kensuke Matsui, Genki Hosokawa, Yasuyuki Yanagi, Tadahide Kunitachi

Proceedings of the 2022 IEEE 33rd Annual International Symposium on Personal, 2022

Radio-Map-Based Flight Planning of Autonomous Repeater Drones for Bridge Inspection.

Yuichi Ambe, Yoshito Okada, Yoshiki Yokota, Satoshi Abe, Fumihide Kojima, Toshiyuki Miyachi, Hiroaki Harai, Hirokazu Sawada, Takeshi Matsumura, Kazunori Ohno, Satoshi Tadokoro

Proceedings of the 2022 IEEE 33rd Annual International Symposium on Personal, 2022

A 24/60-GHz Dual-Band Double-Directional Channel Sounder Using COTS Phased Arrays.

Minseok Kim, Hibiki Tsukada, Keiichiro Kumakura, Riku Takahashi, Naoya Suzuki, Hirokazu Sawada, Takeshi Matsumura

Proceedings of the 2022 IEEE International Conference on Communications Workshops, 2022

2021

Analysis of 920 MHz Band Received Power Fluctuation in a Factory Environment.

Hirokazu Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima, Kotaro Ikeda, Kensuke Matsui, Takuto Kurose, Yasuyuki Yanagi, Tadahide Kunitachi

Proceedings of the 24th International Symposium on Wireless Personal Multimedia Communications, 2021

Experimental Study of Dynamic Data Traffic Control for the Cooperating System of Smart Personal Mobility and Indoor Intelligent Infrastructure.

Chang Woo Pyo, Hirokazu Sawada, Takeshi Matsumura

Proceedings of the 24th International Symposium on Wireless Personal Multimedia Communications, 2021

Coexistence of a Low-power IEEE 802.11af Secondary User in TV White Space with Analog and Digital TV systems.

Alberto S. Bañacia, Rosana J. Ferolin, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima

Proceedings of the 24th International Symposium on Wireless Personal Multimedia Communications, 2021

2018

Characterization of Broadband Mobile Communication Channel in 200MHz Band Based on Saleh-Valenzuela Model.

Hiroki Ohara, Hirokazu Sawada, Masayuki Oodo, Fumihide Kojima, Hiroshi Harada, Kentaro Saito, Jun-ichi Takada

IEICE Trans. Commun., 2018

Wideband Rectangular Antenna Fed Sideways from a Ground Plate.

Kyoichi Iigusa, Hirokazu Sawada, Fumihide Kojima, Hiroshi Harada

IEICE Trans. Commun., 2018

Vehicle to Vehicle Communications at Suburban Environment using IEEE 802.11af compliant Devices.

Jeric G. Brioso, Alberto S. Bañacia, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima

Proceedings of the 21st International Symposium on Wireless Personal Multimedia Communications, 2018

Experimental Verification of ITU-R P.1411 as Path Loss Prediction Model for IEEE 802.11af.

Alberto S. Bañacia, Jeric G. Brioso, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima

Proceedings of the 21st International Symposium on Wireless Personal Multimedia Communications, 2018

Evaluation of IEEE 802.11af Compliant Devices for Vehicle to Infrastructure Communications in Suburban Environment.

Jeric G. Brioso, Alberto S. Bañacia, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima

Proceedings of the 2018 IEEE Vehicular Networking Conference, 2018

2017

90-GHz band propagation characteristics in viaduct environment for railway radiocommunication system between train and trackside.

Hirokazu Sawada, Kentaro Ishizu, Fumihide Kojima, Hiroyo Ogawa, Kazuki Nakamura, Nagateru Iwasawa, Kunihiro Kawasaki, Nobuhiko Shibagaki

Proceedings of the 20th International Symposium on Wireless Personal Multimedia Communications, 2017

Implementation of a multi-hop network at the university campus using an IEEE 802.11af-compliant Network.

Antonio Montejo, Alberto Bañacia, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Fumihide Kojima

Proceedings of the 20th International Symposium on Wireless Personal Multimedia Communications, 2017

2016

Power delay profile measurement for VHF-band broadband mobile communication system.

Hiroki Ohara, Hirokazu Sawada, Masayuki Oodo, Hideki Kobayashi, Fumihide Kojima, Hiroshi Harada, Jun-ichi Takada

Proceedings of the 27th IEEE Annual International Symposium on Personal, 2016

2015

Path Loss and Throughput Estimation Models for an IEEE 802.11af Prototype.

Hirokazu Sawada, Keiichi Mizutani, Kentaro Ishizu, Takeshi Matsumura, Ha Nguyen Tran, Homare Murakami, Fumihide Kojima, Hiroshi Harada

Proceedings of the IEEE 81st Vehicular Technology Conference, 2015

IEEE 802.11af Indoor Experiment in UK Ofcom TVWS Trial Pilot Program.

Keiichi Mizutani, Kentaro Ishizu, Takeshi Matsumura, Ha Nguyen Tran, Hirokazu Sawada, Homare Murakami, Fumihide Kojima, Hiroshi Harada

Proceedings of the IEEE 81st Vehicular Technology Conference, 2015

Receiver diversity evaluation for a VHF band broadband mobile communication system.

Hirokazu Sawada, Masayuki Oodo, Tomoshige Kan, Fumihide Kojima, Hiroshi Harada, Hideki Kobayashi, Noriyuki Soma, Masafumi Moriyama, Osamu Yamamoto, Takaaki Yamato, Shigeki Yamamoto

Proceedings of the 21st Asia-Pacific Conference on Communications, 2015

2014

Field experiment of long-distance broadband communications in TV white space using IEEE 802.22 and IEEE 802.11af.

Kentaro Ishizu, Keigo Hasegawa, Keiichi Mizutani, Hirokazu Sawada, Kei Yanagisawa, Keat-Beng Toh, Takeshi Matsumura, Seishi Sasaki, Masahiro Asano, Homare Murakami, Hiroshi Harada

Proceedings of the 2014 International Symposium on Wireless Personal Multimedia Communications, 2014

2012

An Orthogonal Polarization Based MIMO Transmission for Advanced 60GHz WLAN.

Masahiro Umehira, Toshiaki Sasame, Hirokazu Sawada

Proceedings of the 75th IEEE Vehicular Technology Conference, 2012

Disconnection Probability Improvement by Using Artificial Multi Reflectors for Millimeter-Wave Indoor Wireless Communications.

Hirokazu Sawada, Shunya Takahashi, Shuzo Kato

Proceedings of the 75th IEEE Vehicular Technology Conference, 2012

2010

Impulse Response Model and Parameters for Indoor Channel Modeling at 60GHz.

Hirokazu Sawada, Hiroyuki Nakase, Shuzo Kato, Masahiro Umehira, Katsuyoshi Sato, Hiroshi Harada

Proceedings of the 71st IEEE Vehicular Technology Conference, 2010

2009

A sixty GHz vehicle area network for multimedia communications.

Hirokazu Sawada, Hiroyuki Nakase, Katsuyoshi Sato, Hiroshi Harada

IEEE J. Sel. Areas Commun., 2009

A Sixty GHz Intra-Car Multi-Media Communications System.

Hirokazu Sawada, Tomohide Tomatsu, Gen Ozaki, Hiroyuki Nakase, Shuzo Kato, Katsuyoshi Sato, Hiroshi Harada

Proceedings of the 69th IEEE Vehicular Technology Conference, 2009

Polarization dependence in double directional propagation channel at 60GHz.

Hirokazu Sawada, Hiroyuki Nakase, Shuzo Kato, Masahiro Umehira, Katsuyoshi Sato, Hiroshi Harada

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

2007

NRD-Guide Passive Components and Devices for Millimeter Wave Wireless Applications.

Tsukasa Yoneyama, Hirokazu Sawada, Takashi Shimizu

IEICE Trans. Electron., 2007

Channel Model for Millimeter Wave WPAN.

Katsuyoshi Sato, Hirokazu Sawada, Yozo Shoji, Shuzo Kato

Proceedings of the IEEE 18th International Symposium on Personal, 2007