Hirokazu Sawada

Publication Activity (10 Years)

Years Active: 2007-2024
Publications (10 Years): 25

Top Topics

Wireless Access

Experimental Verification

Automatically Created

Top Venues

IEICE Trans. Commun.

Publications

Masayuki Shirakawa, Rei Furukawa, Gilbert Ching, Kenshi Horihata, Yukiko Kishiki, Hirokazu Sawada, Azril Haniz, Takeshi Matsumura, Homare Murakami, Fumihide Kojima
Path Clustering for Radio Propagation Prediction With Moving Object in Indoor Environment. IEEE Access 12 (2024)
Michiharu Nakamura, Hirokazu Sawada, Takeshi Matsumura
A Simple Access Point Synchronization for THz Wireless Access System. WCNC (2024)
Changwoo Pyo, Hirokazu Sawada, Takeshi Matsumura
Deep Learning-Based Radio Estimation Using a Semi-Automatically Created Indoor Building Information. WCNC (2024)
Azril Haniz, Hikaru Kawasaki, Genki Hosokawa, Takuro Urushibata, Yasuyuki Yanagi, Tadahide Kunitachi, Hirokazu Sawada, Takeshi Matsumura
Novel Ray-tracing Received Power Adjustment Approach Based on the Ratio of Wavelength and Object Size. PIMRC (2023)
Changwoo Pyo, Hirokazu Sawada, Takeshi Matsumura
A Deep Learning-Based Indoor Radio Estimation Method Driven by 2.4 GHz Ray-Tracing Data. IEEE Access 11 (2023)
Chang-Woo Pyo, Hirokazu Sawada, Takeshi Matsumura
RadioResUNet: Wireless Measurement by Deep Learning for Indoor Environments. WPMC (2022)
Takeshi Matsumura, Hirokazu Sawada, Toshiyuki Miyachi, Fumihide Kojima, Hiroaki Harai, Ayaka Sakaguchi, Yoshihisa Nishigori, Hiroshi Harada
Development and Initial Implementation of Large-scale Wireless Emulator Toward Beyond 5G. WPMC (2022)
Azril Haniz, Hirokazu Sawada, Hikaru Kawasaki, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima, Kensuke Matsui, Genki Hosokawa, Yasuyuki Yanagi, Tadahide Kunitachi
Long-term Power Fluctuation and Delay Spread Characteristics in a Factory Environment at 2.4 GHz and 5.2 GHz Bands. PIMRC (2022)
Minseok Kim, Hibiki Tsukada, Keiichiro Kumakura, Riku Takahashi, Naoya Suzuki, Hirokazu Sawada, Takeshi Matsumura
A 24/60-GHz Dual-Band Double-Directional Channel Sounder Using COTS Phased Arrays. ICC Workshops (2022)
Homare Murakami, Hirokazu Sawada, Takeshi Matsumura
Interference Analysis for Spectrum Sharing of Multiple Local 5G gNBs by Different Operators in a Building. WPMC (2022)
Fumihide Kojima, Toshiyuki Miyachi, Takeshi Matsumura, Hirokazu Sawada, Hiroaki Harai, Hiroshi Harada
A Large-Scale Wireless Emulation Environment with Interaction between Physical and Virtual Radio Nodes for Beyond 5G Systems. PIMRC (2022)
Ayaka Sakaguchi, Kensuke Sakamoto, Yuki Yamakawa, Waka Mimura, Toshiyuki Miyachi, Fumihide Kojima, Hiroaki Harai, Hirokazu Sawada, Homare Murakami, Takeshi Matsumura
Design of Radio Wave Visualization System for Office Planners and Verification of Propagation Area Visualization. PIMRC (2022)
Takeshi Matsumura, Hirokazu Sawada
Investigation of Beyond 5G-based Physical Radio Node Emulation for Large-scale Wireless Emulator. WPMC (2022)
Yuichi Ambe, Yoshito Okada, Yoshiki Yokota, Satoshi Abe, Fumihide Kojima, Toshiyuki Miyachi, Hiroaki Harai, Hirokazu Sawada, Takeshi Matsumura, Kazunori Ohno, Satoshi Tadokoro
Radio-Map-Based Flight Planning of Autonomous Repeater Drones for Bridge Inspection. PIMRC (2022)
Chang Woo Pyo, Hirokazu Sawada, Takeshi Matsumura
Experimental Study of Dynamic Data Traffic Control for the Cooperating System of Smart Personal Mobility and Indoor Intelligent Infrastructure. WPMC (2021)
Alberto S. Bañacia, Rosana J. Ferolin, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima
Coexistence of a Low-power IEEE 802.11af Secondary User in TV White Space with Analog and Digital TV systems. WPMC (2021)
Hirokazu Sawada, Hikaru Kawasaki, Azril Haniz, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima, Kotaro Ikeda, Kensuke Matsui, Takuto Kurose, Yasuyuki Yanagi, Tadahide Kunitachi
Analysis of 920 MHz Band Received Power Fluctuation in a Factory Environment. WPMC (2021)
Alberto S. Bañacia, Jeric G. Brioso, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima
Experimental Verification of ITU-R P.1411 as Path Loss Prediction Model for IEEE 802.11af. WPMC (2018)
Jeric G. Brioso, Alberto S. Bañacia, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima
Vehicle to Vehicle Communications at Suburban Environment using IEEE 802.11af compliant Devices. WPMC (2018)
Kyoichi Iigusa, Hirokazu Sawada, Fumihide Kojima, Hiroshi Harada
Wideband Rectangular Antenna Fed Sideways from a Ground Plate. IEICE Trans. Commun. (1) (2018)
Hiroki Ohara, Hirokazu Sawada, Masayuki Oodo, Fumihide Kojima, Hiroshi Harada, Kentaro Saito, Jun-ichi Takada
Characterization of Broadband Mobile Communication Channel in 200MHz Band Based on Saleh-Valenzuela Model. IEICE Trans. Commun. (11) (2018)
Jeric G. Brioso, Alberto S. Bañacia, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Takeshi Matsumura, Fumihide Kojima
Evaluation of IEEE 802.11af Compliant Devices for Vehicle to Infrastructure Communications in Suburban Environment. VNC (2018)
Hirokazu Sawada, Kentaro Ishizu, Fumihide Kojima, Hiroyo Ogawa, Kazuki Nakamura, Nagateru Iwasawa, Kunihiro Kawasaki, Nobuhiko Shibagaki
90-GHz band propagation characteristics in viaduct environment for railway radiocommunication system between train and trackside. WPMC (2017)
Antonio Montejo, Alberto Bañacia, Hirokazu Sawada, Kentaro Ishizu, Kazuo Ibuka, Fumihide Kojima
Implementation of a multi-hop network at the university campus using an IEEE 802.11af-compliant Network. WPMC (2017)
Hiroki Ohara, Hirokazu Sawada, Masayuki Oodo, Hideki Kobayashi, Fumihide Kojima, Hiroshi Harada, Jun-ichi Takada
Power delay profile measurement for VHF-band broadband mobile communication system. PIMRC (2016)
Keiichi Mizutani, Kentaro Ishizu, Takeshi Matsumura, Ha Nguyen Tran, Hirokazu Sawada, Homare Murakami, Fumihide Kojima, Hiroshi Harada
IEEE 802.11af Indoor Experiment in UK Ofcom TVWS Trial Pilot Program. VTC Spring (2015)
Hirokazu Sawada, Masayuki Oodo, Tomoshige Kan, Fumihide Kojima, Hiroshi Harada, Hideki Kobayashi, Noriyuki Soma, Masafumi Moriyama, Osamu Yamamoto, Takaaki Yamato, Shigeki Yamamoto
Receiver diversity evaluation for a VHF band broadband mobile communication system. APCC (2015)
Hirokazu Sawada, Keiichi Mizutani, Kentaro Ishizu, Takeshi Matsumura, Ha Nguyen Tran, Homare Murakami, Fumihide Kojima, Hiroshi Harada
Path Loss and Throughput Estimation Models for an IEEE 802.11af Prototype. VTC Spring (2015)
Kentaro Ishizu, Keigo Hasegawa, Keiichi Mizutani, Hirokazu Sawada, Kei Yanagisawa, Keat-Beng Toh, Takeshi Matsumura, Seishi Sasaki, Masahiro Asano, Homare Murakami, Hiroshi Harada
Field experiment of long-distance broadband communications in TV white space using IEEE 802.22 and IEEE 802.11af. WPMC (2014)
Hirokazu Sawada, Shunya Takahashi, Shuzo Kato
Disconnection Probability Improvement by Using Artificial Multi Reflectors for Millimeter-Wave Indoor Wireless Communications. VTC Spring (2012)
Masahiro Umehira, Toshiaki Sasame, Hirokazu Sawada
An Orthogonal Polarization Based MIMO Transmission for Advanced 60GHz WLAN. VTC Spring (2012)
Hirokazu Sawada, Hiroyuki Nakase, Shuzo Kato, Masahiro Umehira, Katsuyoshi Sato, Hiroshi Harada
Impulse Response Model and Parameters for Indoor Channel Modeling at 60GHz. VTC Spring (2010)
Hirokazu Sawada, Tomohide Tomatsu, Gen Ozaki, Hiroyuki Nakase, Shuzo Kato, Katsuyoshi Sato, Hiroshi Harada
A Sixty GHz Intra-Car Multi-Media Communications System. VTC Spring (2009)
Hirokazu Sawada, Hiroyuki Nakase, Katsuyoshi Sato, Hiroshi Harada
A sixty GHz vehicle area network for multimedia communications. IEEE J. Sel. Areas Commun. 27 (8) (2009)
Hirokazu Sawada, Hiroyuki Nakase, Shuzo Kato, Masahiro Umehira, Katsuyoshi Sato, Hiroshi Harada
Polarization dependence in double directional propagation channel at 60GHz. PIMRC (2009)
Katsuyoshi Sato, Hirokazu Sawada, Yozo Shoji, Shuzo Kato
Channel Model for Millimeter Wave WPAN. PIMRC (2007)
Tsukasa Yoneyama, Hirokazu Sawada, Takashi Shimizu
NRD-Guide Passive Components and Devices for Millimeter Wave Wireless Applications. IEICE Trans. Electron. (12) (2007)