| 2025 | PIMRC | Extension of CNN-Based Demodulation from Single-Color to Multi-Color in Image Sensor-Based Visible Light Communication. | Yuki Iyoda, Kentaro Kobayashi, Chedlia Ben Naila, Hiraku Okada |
| 2024 | APCC | Performance Evaluation of mmWave Terminal Cooperative Communications Using Directional Antennas. | Hiraku Okada, Yiche Li, Chedlia Ben Naila |
| 2024 | APCC | Synchronization for VLC Using Orthogonally Aligned Rolling Shutter Cameras and LED Array. | Ayumu Otsuka, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii, Koji Kamakura, Masayuki Kinoshita, Shintaro Arai, Tomohiro Yendo, Shan Lu |
| 2024 | VTC | Relay-Assisted UOWC-FSO System Under Pointing Errors. | Hao Wang, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2023 | APCC | Visible Light Communication Systems Using a High-speed Display and Rolling-shutter Camera. | Hiraku Okada, Taiga Hayashi, Kentaro Kobayashi, Tadahiro Wada, Chedlia Ben Naila, Masaaki Katayama |
| 2023 | IECON | Robust Video Transmission for Robot Teleoperation Over Networks with Packet Loss. | Fumiharu Sasaki, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2023 | IECON | Interpolation of Missing Data for Wireless Operation of Industrial Robot. | Yosuke Takagi, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2023 | ISCC | Performance of Intelligent Reflecting Surface Based-FSO Link Under Strong Turbulence and Spatial Jitter. | Takumi Ishida, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2023 | PIMRC | High Speed Optical Wireless Uplink using Multiuser MIMO with Angle Diversity. | Xuejuan Zhu, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2023 | VTC | Performance Analysis of Intelligent Reflecting Surface Assisted-FSO System over Turbulent Channels with Pointing Errors. | Takumi Ishida, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2022 | PIMRC | Spatial Diversity for Mitigating Near-far Problem in Wireless Optical CDMA Systems. | Taiga Kasukabe, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2022 | VTC | Design and Evaluation of Optimum Receiver for Turbulent Underwater Optical Wireless Channel. | Kenzo Yamada, Chedlia Ben Naila, Hiraku Okada, Masaaki Katayama |
| 2021 | VTC | Experimental Evaluation of a Wireless LAN Relay System Using Unmanned Aerial Vehicles. | Hiroki Tanaka, Nobuo Matsui, Yuta Watanabe, Hiraku Okada, Masaaki Katayama |
| 2020 | GLOBECOM | Performance Evaluation of Range Estimation for Image Sensor Communication Using Phase-only Correlation. | Ruiyi Huang, Masayuki Kinoshita, Takaya Yamazato, Hiraku Okada, Koji Kamakura, Shintaro Arai, Tomohiro Yendo, Toshiaki Fujii |
| 2020 | GLOBECOM | Experimental Evaluation of an Indoor Long Distance High Speed Imaging MIMO System. | Akifumi Iwasa, Chedlia Ben Naila, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2019 | GLOBECOM | Stereo Ranging Method Using LED Transmitter for Visible Light Communication. | Masayuki Kinoshita, Koji Kamakura, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii, Shintaro Arai, Tomohiro Yendo |
| 2019 | IECON | Synchronous CDMA for a PLC-based multi-machine control system. | Mitsuru Hasegawa, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2019 | VTC | Inclination of Flying Drones in Aerial Wireless Relay Networks. | Hiraku Okada, Jyo Suzuki, Hiroki Yanai, Kentaro Kobayashi, Masaaki Katayama |
| 2018 | GLOBECOM | Performance Evaluation of Precoded Pulse Width Modulation for Image Sensor Communication. | Satoshi Kamegawa, Masayuki Kinoshita, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii, Koji Kamakura, Tomohiro Yendo, Shintaro Arai |
| 2018 | GLOBECOM | A Comparison of Reception Methods for Visible Light Communication Using High-Speed Stereo Cameras. | Masayuki Kinoshita, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii, Shintaro Arai, Tomohiro Yendo, Koji Kamakura |
| 2018 | VTC | Flight Schemes Considering Breaks for Wireless Relay Networks Using Drones during Large-Scale Disasters. | Hiroki Yanai, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama |
| 2017 | VTC | Performance Improvement of Low-Latency V2I Uplink Using Superposed Cooperative V2V Transmission. | Eiji Okamoto, Hiraku Okada, Yoshinao Ishii, Satoshi Makido |
| 2017 | WCNC | A Study on Variable Length Channel Coding for State Feedback in Wireless Control Systems. | Yosuke Miwa, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2017 | WCNC | A Study on Multiple Access Schemes for Wireless Control over the IEEE 802.15.4 Beacon-Enabled Mode. | Yushi Uematsu, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2016 | IECON | A study on time division multiple access scheme based on predicted tracking error for wireless feedback control of multiple plants. | Shota Kimura, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2016 | IECON | A study on a source coding scheme considering the importance of control data for wireless feedback control systems. | Atsushi Nagata, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2016 | IECON | A study on h-infinity controller design considering the influence of packet loss as a disturbance. | Takashi Ogura, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2016 | PIMRC | Visible light communication systems using blue color difference modulation for digital signage. | Sho Sato, Hiraku Okada, Kentaro Kobayashi, Takaya Yamazato, Masaaki Katayama |
| 2015 | APCC | An analyzing method using self-organizing map for MIMO mesh networks. | Yoshihiro Minematsu, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama |
| 2015 | GLOBECOM | Novel Demodulation Scheme Based on Blurred Images for Image-Sensor-Based Visible Light Communication. | Yuki Ohira, Shintaro Arai, Tomohiro Yendo, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii, Koji Kamakura |
| 2015 | PIMRC | Message communication system using unmanned aerial vehicles under large-scale disaster environments. | Kenichi Mase, Hiraku Okada |
| 2015 | VTC | Area Transmission Efficiency of Single-User and Multi-User MIMO in Grid-Topology Wireless Mesh Networks. | Hironori Kusumoto, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama |
| 2014 | GLOBECOM | Motion modeling of mobile transmitter for image sensor based I2V-VLC, V2I-VLC, and V2V-VLC. | Masayuki Kinoshita, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii, Shintaro Arai, Tomohiro Yendo, Koji Kamakura |
| 2014 | GLOBECOM | An information sharing method using compressed sensing in wireless distributed networks. | Shuhei Suzaki, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama |
| 2013 | ETFA | A note on adaptive coding scheme based on control quality for wireless feedback control systems. | Shingo Hattori, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2013 | IECON | A note on adaptive coding scheme for improvement of reference tracking in wireless feedback control systems. | Shingo Hattori, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2013 | PIMRC | A study on network and multi-route coding for information advertisement in wireless mesh networks. | Yuki Sugao, Hiraku Okada, Kentaro Kobayashi, Masaaki Katayama |
| 2012 | GLOBECOM | High-speed transmission of overlay coding for road-to-vehicle visible light communication using LED array and high-speed camera. | Sayaka Nishimoto, Takaya Yamazato, Hiraku Okada, Toshiaki Fujii, Tomohiro Yendo, Shintaro Arai |
| 2012 | GLOBECOM | Network construction management for emergency communication system SKYMESH in large scale disaster. | Hiraku Okada, Hironori Oka, Kenichi Mase |
| 2011 | ISADS | An ARQ Scheme Using NACK for Network Coding in Wireless Multihop Networks. | Hiraku Okada, Hiroya Hiramuki, Kenichi Mase |
| 2011 | PIMRC | i-LightHouse: A Visible Light Communication system for the visually impaired. | Akinobu Funahashi, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama |
| 2011 | VTC | Experimental Evaluation of Rate Switch Control in Wireless Mesh Networks. | Tomoya Togashi, Kenichi Mase, Hiraku Okada |
| 2010 | IWCMC | Performance analysis of wireless mesh networks with three sector antennas. | Hiraku Okada, Kenichi Mase |
| 2010 | VTC | Improved Decoding Methods of Visible Light Communication System for ITS Using LED Array and High-Speed Camera. | Toru Nagura, Takaya Yamazato, Masaaki Katayama, Tomohiro Yendo, Toshiaki Fujii, Hiraku Okada |
| 2010 | WCNC | Development of an Emergency Communication System for Evacuees of Shelters. | Kenichi Mase, Nobuhiro Azuma, Hiraku Okada |
| 2009 | PIMRC | An overhead reduction strategy for weak Duplicate Address Detection in Mobile Ad Hoc Networks. | Hiraku Okada, Kazuki Akima, Kenichi Mase |
| 2008 | PIMRC | Performance comparison of ARQ schemes for network coding in ad hoc networks. | Hiroya Hiramuki, Hiraku Okada, Kenichi Mase |
| 2008 | PIMRC | Fundamental characteristics of connectivity in vehicular ad hoc networks. | Shigeo Shioda, Junko Harada, Yuta Watanabe, Tomoaki Goi, Hiraku Okada, Kenichi Mase |
| 2008 | VTC | Joint Decoding and Transmit Power Control Using Time-Dependent Correlation in Sensor Networks. | Suguru Doki, Hiraku Okada, Kenichi Mase |
| 2008 | TridentCom | A testbed-based approach to develop layer 3 wireless mesh network protocols. | Kenichi Mase, Yasunori Owada, Hiraku Okada, Tomoaki Imai |
| 2007 | MASS | A Novel Contention-Free Medium Access Control Protocol for Inter-Vehicle Communication Systems. | Mitsuru Masamura, Satoshi Makido, Hiraku Okada, Takaya Yamazato, Masaaki Katayama |
| 2007 | MASS | Performance Comparison of a Position-Based Routing Protocol for VANET. | Akira Takano, Hiraku Okada, Kenichi Mase |
| 2007 | MOBICOM | A wireless mesh network testbed in rural mountain areas. | Yusuke Takahashi, Yasunori Owada, Hiraku Okada, Kenichi Mase |
| 2007 | PIMRC | A Low-Overhead Handling Scheme of STA Association Information for IEEE 802.11s. | Hiraku Okada, Kenichi Mase, Masanori Nozaki, Bing Zhang |
| 2007 | PIMRC | Distributed Space-Time Block Coding for Large and Undetermined Set of Relay Terminals. | Ryosuke Uchida, Hiraku Okada, Takaya Yamazato, Masaaki Katayama |
| 2007 | VTC | A Simple Estimator of Multiple Target Positions for Automotive Short Range Radar Networks. | Hiroyuki Hatano, Takaya Yamazato, Hiraku Okada, Masaaki Katayama |
| 2007 | VTC | A Route Selection Scheme for Multi-Route Coding in Multihop Cellular Networks. | Hiraku Okada, Hitoshi Imai, Takaya Yamazato, Masaaki Katayama, Kenichi Mase |
| 2007 | VTC | Route Diversity Effect of Joint Decoding Using Correlation between Observed Data Sequences in Sensor Networks. | Hiraku Okada, Kentaro Kobayashi, Takaya Yamazato, Kenichi Mase |
| 2006 | GLOBECOM | MIMO Zero-forcing Equalizer for BFDM/OQAM Systems in the Highly Mobile Environments. | Bayarpurev Mongol, Takaya Yamazato, Hiraku Okada, Masaaki Katayama |
| 2006 | MOBICOM | A large-scale testbed for wireless mobile ad hoc networks. | Hiraku Okada, Yasunori Owada, Yoshihiko Takahashi, Kenichi Mase |
| 2006 | PIMRC | The Effect of Multipath Hybrid Routing Protocol in Multihop Cellular Networks. | Hitoshi Imai, Hiraku Okada, Takaya Yamazato, Masaaki Katayama |
| 2006 | PIMRC | Source-Destination Hybrid ARQ for Multi-Route Coding in Wireless Multi-Hop Networks. | Hiraku Okada, Tadahiro Wada, Kouji Ohuchi, Masato Saito, Kenichi Mase |
| 2006 | VTC | Throughput Evaluation of ARQ Scheme for Multi-route Coding in Wireless Multi-hop Networks. | Hiraku Okada, Tadahiro Wada, Kouji Ohuchi, Masato Saito, Takaya Yamazato, Masaaki Katayama |
| 2005 | GLOBECOM | Effect of parity check bits in turbo coded multi-route multi-hop networks. | Tadahiro Wada, Abbas Jamalipour, Hiraku Okada, Kouji Ohuchi, Masato Saito |
| 2005 | PIMRC | A MIMO system with relay terminals for reliable wireless control. | Ryosuke Uchida, Hiraku Okada, Takaya Yamazato, Masaaki Katayama |
| 2004 | PIMRC | Performance analysis of multiple-route packet combining scheme for real-time communications in wireless multihop networks. | Yasuhiro Hirayama, Nobuyuki Nakagawa, Hiraku Okada, Takaya Yamazato, Masaaki Katayama |
| 2002 | PIMRC | An access control protocol based on estimation of multimedia traffic with an adaptive algorithm in CDMA packet network. | Yasuhiro Hirayama, Hiraku Okada, Takaya Yamazato, Masaaki Katayama |
| 2002 | PIMRC | Effect of interleaving and FEC on the throughput of CDMA unslotted ALOHA system with adaptive multiuser receiver. | Hiraku Okada, Takaya Yamazato, Masaaki Katayama |
| 2002 | WCNC | CDMA packet recognition and signal acquisition using LMS-based adaptive receiver. | Tadafumi Kume, Takaya Yamazato, Koichiro Ban, Hiraku Okada, Masaaki Katayama |
| 2001 | GLOBECOM | A new packet detection scheme in CDMA unslotted ALOHA system with successive interference cancellation. | Yukihiro Tadokoro, Hiraku Okada, Takaya Yamazato, Masaaki Katayama, Akira Ogawa |
| 2001 | ISCAS | A design of source matched MAP receiver for image transmission. | Satoshi Makido, Takaya Yamazato, Hiraku Okada, Masaaki Katayama, Akira Ogawa |
| 2001 | VTC | An adaptive antenna selection scheme for transmit diversity in OFDM systems. | Hui Shi, Masaaki Katayama, Takaya Yamazato, Hiraku Okada, Akira Ogawa |
| 2000 | PIMRC | Application of MMSE multi-user detection to CDMA unslotted ALOHA system. | Hiraku Okada, Peter M. Grant, Ian W. Band, Akira Ogawa |
| 1996 | PIMRC | Throughput improvement of CDMA slotted ALOHA system by modified channel load sensing protocol. | Masato Saito, Hiraku Okada, Takahide Sato, Takaya Yamazato, Masaaki Katayama, Akira Ogawa |