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 (PIMRC, 1996)

Throughput analysis of DS/SSMA unslotted ALOHA system with fixed packet length. - Takahide Sato; Hiraku Okada; Takaya Yamazato; Masaaki Katayama; Akira Ogawa (IEEE J. Sel. Areas Commun., 1996)

Queueing analysis of CDMA slotted ALOHA systems with finite buffer and finite population assumptions. - Hiraku Okada; Takaya Yamazato; Masaaki Katayama; Akira Ogawa (ICC, 1998)

Throughput improvement of a dual-class multi-code CDMA ALOHA system with modified channel load sensing protocol. - A. Sandouk; Hiraku Okada; Takaya Yamazato; Masaaki Katayama; Akira Ogawa (ICC, 1999)

Application of MMSE multi-user detection to CDMA unslotted ALOHA system. - Hiraku Okada; Peter M. Grant; Ian W. Band; Akira Ogawa (PIMRC, 2000)

A new packet detection scheme in CDMA unslotted ALOHA system with successive interference cancellation. - Yukihiro Tadokoro; Hiraku Okada; Takaya Yamazato; Masaaki Katayama; Akira Ogawa (GLOBECOM, 2001)

Comparison of CDMA and FDMA/TDMA in non-GEO satellite systems. - Naoki Ichikawa; Masaaki Katayama; Hiraku Okada; Takaya Yamazato; Akira Ogawa (ICC, 2001)

A design of source matched MAP receiver for image transmission. - Satoshi Makido; Takaya Yamazato; Hiraku Okada; Masaaki Katayama; Akira Ogawa (ISCAS (4), 2001)

An adaptive antenna selection scheme for transmit diversity in OFDM systems. - Hui Shi; Masaaki Katayama; Takaya Yamazato; Hiraku Okada; Akira Ogawa (VTC Fall, 2001)

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 (PIMRC, 2002)

Effect of interleaving and FEC on the throughput of CDMA unslotted ALOHA system with adaptive multiuser receiver. - Hiraku Okada; Takaya Yamazato; Masaaki Katayama (PIMRC, 2002)

CDMA packet recognition and signal acquisition using LMS-based adaptive receiver. - Tadafumi Kume; Takaya Yamazato; Koichiro Ban; Hiraku Okada; Masaaki Katayama (WCNC, 2002)

Medium Access Control Protocol Based on Estimation of Multimedia Traffic with an Adaptive Algorithm in CDMA Packet Communications. - Yasuhiro Hirayama; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

New Analytical Model for TCP in Wireless Environments. - Katsuhiro Naito; Hiraku Okada; Masato Saito; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

Performance Improvement of OFDM System with Consideration on the Characteristics of Power-Line Noise. - Kazutoshi Sugimoto; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2002)

Performance Improvement for Coded OFDM Systems with Adaptive Interleaving in Frequency Selective Fading Channel. - Masaaki Harada; Takaya Yamazato; Hiraku Okada; Masaaki Katayama; Akira Ogawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Performance analysis of UWB impulse radar using parallel IPCP receiver. - Hiroyuki Hatano; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (ISWCS, 2004)

A study on error correcting and diversity combiner scheme on multiple routes in wireless multi-hop networks. - Hiraku Okada; N. Koie; Nobuyuki Nakagawa; Takaya Yamazato; Masaaki Katayama (ISWCS, 2004)

A simple data relay process and turbo code application to wireless sensor networks. - Takaya Yamazato; Hiraku Okada; Masaaki Katayama; Akira Ogawa (ISWCS, 2004)

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 (PIMRC, 2004)

Effect of parity check bits in turbo coded multi-route multi-hop networks. - Tadahiro Wada; Abbas Jamalipour; Hiraku Okada; Kouji Ohuchi; Masato Saito (GLOBECOM, 2005)

On the Second-order Statistics of the Channel Parameters for BFDM/OQAM Systems. - Bayarpurev Mongol; Takaya Yamazato; Hiraku Okada; Masaaki Katayama (ISWCS, 2005)

A MIMO system with relay terminals for reliable wireless control. - Ryosuke Uchida; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (PIMRC, 2005)

An Adaptive Receiver for Power-Line Communications with the Estimation of Instantaneous Noise Power. - Yuichi Hirayama; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Application of Successive Interference Cancellation to a Packet-Recognition/Code-Acquisition Scheme in CDMA Unslotted ALOHA Systems. - Yukihiro Tadokoro; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Outage Probability of a Macro and Micro MIMO Diversity Scheme in an Indoor Fading and Shadowing Environment. - Ryosuke Uchida; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

Time-Dependent Analysis of the Multiple-Route Packet Combining Scheme in Wireless Multihop Networks. - Yasuhiro Hirayama; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (Int. J. Wirel. Inf. Networks, 2005)

MIMO Zero-forcing Equalizer for BFDM/OQAM Systems in the Highly Mobile Environments. - Bayarpurev Mongol; Takaya Yamazato; Hiraku Okada; Masaaki Katayama (GLOBECOM, 2006)

Performance of Channel Information Estimation Method Utilizing Parity Check Bits for Turbo Coded Multi-route Multi-hop Networks. - Tadahiro Wada; Abbas Jamalipour; Hiraku Okada; Kouji Ohuchi; Masato Saito (ICC, 2006)

Bit-error-rate Performance Improvement in Wireless Multi-hop Ad Hoc Networks using Route Diversity Considerations. - Tadahiro Wada; Hiraku Okada; Abbas Jamalipour; Kouji Ohuchi; Masato Saito (ICC, 2006)

Channel Estimation for BFDM/OQAM System in Dispersive Time-Varying Channels. - Bayarpurev Mongol; Takaya Yamazato; Hiraku Okada; Masaaki Katayama (ISWCS, 2006)

A large-scale testbed for wireless mobile ad hoc networks. - Hiraku Okada; Yasunori Owada; Yoshihiko Takahashi; Kenichi Mase (WiNTECH, 2006)

The Effect of Multipath Hybrid Routing Protocol in Multihop Cellular Networks. - Hitoshi Imai; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (PIMRC, 2006)

Source-Destination Hybrid ARQ for Multi-Route Coding in Wireless Multi-Hop Networks. - Hiraku Okada; Tadahiro Wada; Kouji Ohuchi; Masato Saito; Kenichi Mase (PIMRC, 2006)

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 (VTC Spring, 2006)

MIMO Zero-Forcing Equalizer for BFDM/OQAM Systems in Time-Frequency Dispersive Channels. - Bayarpurev Mongol; Takaya Yamazato; Hiraku Okada; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Multi-Route Coding in Wireless Multi-Hop Networks. - Hiraku Okada; Nobuyuki Nakagawa; Tadahiro Wada; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Commun., 2006)

Influence of ADC Nonlinearity on the Performance of an OFDM Receiver. - Manabu Sawada; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (IEICE Trans. Commun., 2006)

A mathematical model of noise in narrowband power line communication systems. - Masaaki Katayama; Takaya Yamazato; Hiraku Okada (IEEE J. Sel. Areas Commun., 2006)

Performance Evaluation of Wireless Sensor Networks Using Turbo Codes with Multi-Route Transmission. - Tadahiro Wada; Kouji Ohuchi; Abbas Jamalipour; Hiraku Okada; Masato Saito (ICC, 2007)

A Novel Contention-Free Medium Access Control Protocol for Inter-Vehicle Communication Systems. - Mitsuru Masamura; Satoshi Makido; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (MASS, 2007)

Performance Comparison of a Position-Based Routing Protocol for VANET. - Akira Takano; Hiraku Okada; Kenichi Mase (MASS, 2007)

A wireless mesh network testbed in rural mountain areas. - Yusuke Takahashi; Yasunori Owada; Hiraku Okada; Kenichi Mase (WiNTECH, 2007)

A Low-Overhead Handling Scheme of STA Association Information for IEEE 802.11s. - Hiraku Okada; Kenichi Mase; Masanori Nozaki; Bing Zhang 002 (PIMRC, 2007)

Distributed Space-Time Block Coding for Large and Undetermined Set of Relay Terminals. - Ryosuke Uchida; Hiraku Okada; Takaya Yamazato; Masaaki Katayama (PIMRC, 2007)

A Simple Estimator of Multiple Target Positions for Automotive Short Range Radar Networks. - Hiroyuki Hatano; Takaya Yamazato; Hiraku Okada; Masaaki Katayama (VTC Spring, 2007)

A Route Selection Scheme for Multi-Route Coding in Multihop Cellular Networks. - Hiraku Okada; Hitoshi Imai; Takaya Yamazato; Masaaki Katayama; Kenichi Mase (VTC Fall, 2007)

Route Diversity Effect of Joint Decoding Using Correlation between Observed Data Sequences in Sensor Networks. - Hiraku Okada; Kentaro Kobayashi; Takaya Yamazato; Kenichi Mase (VTC Spring, 2007)

Performance Analysis of Source-Destination ARQ Scheme for Multiroute Coding in Wireless Multihop Networks. - Hiraku Okada; Masato Saito; Tadahiro Wada; Kouji Ohuchi (IEICE Trans. Commun., 2007)

Performance comparison of ARQ schemes for network coding in ad hoc networks. - Hiroya Hiramuki; Hiraku Okada; Kenichi Mase (PIMRC, 2008)

Fundamental characteristics of connectivity in vehicular ad hoc networks. - Shigeo Shioda; Junko Harada; Yuta Watanabe; Tomoaki Goi; Hiraku Okada; Kenichi Mase (PIMRC, 2008)

A testbed-based approach to develop layer 3 wireless mesh network protocols. - Kenichi Mase; Yasunori Owada; Hiraku Okada; Tomoaki Imai (TRIDENTCOM, 2008)

Joint Decoding and Transmit Power Control Using Time-Dependent Correlation in Sensor Networks. - Suguru Doki; Hiraku Okada; Kenichi Mase (VTC Spring, 2008)

Error Correction Using Time-Dependent Correlation and Transmit Power Control in Sensor Networks. - Suguru Doki; Hiraku Okada; Kenichi Mase (IEICE Trans. Commun., 2008)

Analysis and Proposal of Position-Based Routing Protocols for Vehicular Ad Hoc Networks. - Hiraku Okada; Akira Takano; Kenichi Mase (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Effect of route diversity by employing turbo coding in multihop ad hoc and mesh networks. - Tadahiro Wada; Hiraku Okada; Abbas Jamalipour; Kouji Ohuchi; Masato Saito (Int. J. Sens. Networks, 2008)

A Route Establishment Scheme for Multi-route Coding in Multihop Cellular Networks. - Hiraku Okada; Hitoshi Imai; Takaya Yamazato; Masaaki Katayama; Kenichi Mase (J. Networks, 2008)

A Proposal of Link Metric for Next-Hop Forwarding Methods in Vehicular Ad Hoc Networks. - Hiraku Okada; Akira Takano; Kenichi Mase (CCNC, 2009)

Evaluation of wireless channel quality for an ad hoc network in the sky, SKYMESH. - Tomoaki Umeki; Hiraku Okada; Kenichi Mase (ISWCS, 2009)

An overhead reduction strategy for weak Duplicate Address Detection in Mobile Ad Hoc Networks. - Hiraku Okada; Kazuki Akima; Kenichi Mase (PIMRC, 2009)

Experimental Evaluation of a Novel Transmission Rate Assignment Scheme in Wireless Mesh Networks. - Hirotaka Kitahara; Hiraku Okada; Kenichi Mase (CCNC, 2010)

Tracking an LED array transmitter for visible light communications in the driving situation. - Toru Nagura; Takaya Yamazato; Masaaki Katayama; Tomohiro Yendo; Toshiaki Fujii; Hiraku Okada (ISWCS, 2010)

High-speed-camera image processing based LED traffic light detection for road-to-vehicle visible light communication. - Halpage Chinthaka Nuwandika Premachandra; Tomohiro Yendo; Mehrdad Panahpour Tehrani; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Masayuki Tanimoto (Intelligent Vehicles Symposium, 2010)

Performance analysis of wireless mesh networks with three sector antennas. - Hiraku Okada; Kenichi Mase (IWCMC, 2010)

Performance of Wireless Mesh Networks with Three Sector Antenna. - Xiaohan Liu; Hiraku Okada; Kenichi Mase (MSN, 2010)

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 (VTC Spring, 2010)

Development of an Emergency Communication System for Evacuees of Shelters. - Kenichi Mase; Nobuhiro Azuma; Hiraku Okada (WCNC, 2010)

Experimental Results on Simple Distributed Cooperative Transmission Scheme with Visible Light Communication. - Takaya Yamazato; Koji Nakao; Hiraku Okada; Masaaki Katayama (IEICE Trans. Commun., 2010)

Erasure coding for road-to-vehicle visible light communication systems. - Hiraku Okada; Takuya Ishizaki; Takaya Yamazato; Tomohiro Yendo; Toshiaki Fujii (CCNC, 2011)

An ARQ Scheme Using NACK for Network Coding in Wireless Multihop Networks. - Hiraku Okada; Hiroya Hiramuki; Kenichi Mase (ISADS, 2011)

Overlay coding for road-to-vehicle visible light communication using LED array and high-speed camera. - Sayaka Nishimoto; Tom Nagura; Takaya Yamazato; Tomohiro Yendo; Toshiaki Fujii; Hiraku Okada; Shintaro Arai (ITSC, 2011)

i-LightHouse: A Visible Light Communication system for the visually impaired. - Akinobu Funahashi; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (PIMRC, 2011)

Experimental Evaluation of Rate Switch Control in Wireless Mesh Networks. - Tomoya Togashi; Kenichi Mase; Hiraku Okada (VTC Spring, 2011)

LED Traffic Light Detection Using High-speed-camera Image Processing for Visible Light Communication. - Halpage Chinthaka Nuwandika Premachandra; Tomohiro Yendo; Mehrdad Panahpour Tehrani; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Masayuki Tanimoto (Inf. Media Technol., 2011)

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 (GLOBECOM Workshops, 2012)

Network construction management for emergency communication system SKYMESH in large scale disaster. - Hiraku Okada; Hironori Oka; Kenichi Mase (GLOBECOM Workshops, 2012)

Performance comparison between Single-User MIMO and Multi-User MIMO in wireless mesh networks. - Hironori Kusumoto; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (WPMC, 2012)

Control Quality of a Feedback Control System under Cyclostationary Noise in Power Line Communication. - Cesar Carrizo; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

A Study on Cluster Partitioning with Cooperative MISO Scheme in Wireless Sensor Networks. - Zheng Huang; Hiraku Okada; Masaaki Katayama; Takaya Yamazato (Int. J. Distributed Sens. Networks, 2012)

A study on cluster lifetime in multi-hop wireless sensor networks with cooperative MISO scheme. - Zheng Huang; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (J. Commun. Networks, 2012)

Intensity estimation method of LED array for visible light communication. - Takanori Ito; Tomohiro Yendo; Shintaro Arai; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii (Video Surveillance and Transportation Imaging Applications, 2013)

A note on adaptive coding scheme based on control quality for wireless feedback control systems. - Shingo Hattori; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (ETFA, 2013)

A note on adaptive coding scheme for improvement of reference tracking in wireless feedback control systems. - Shingo Hattori; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IECON, 2013)

A study on network and multi-route coding for information advertisement in wireless mesh networks. - Yuki Sugao; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (PIMRC, 2013)

A note on adaptive coding scheme for minimizing tracking error in wireless feedback control systems. - Shingo Hattori; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (SII, 2013)

A study on the reduction of synchronization error using a relay of predictive control information in wireless control of multiple plants. - Atsushi Tanaka; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (SII, 2013)

Feedback control scheme with prediction for power line communication channels. - Cesar Carrizo; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (SmartGridComm, 2013)

Interpixel interference cancellation method for road-to-vehicle visible light communication. - Tatsuya Kasashima; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Tomohiro Yendo; Shintaro Arai (WiVeC, 2013)

Channel information estimation for error correcting code in road-to-vehicle visible light communication systems. - Hiraku Okada; Shinnosuke Misawa; Takaya Yamazato; Toshiaki Fujii; Tomohiro Yendo (WiVeC, 2013)

Impact of the Reduction of Transmitted Information on the Control Quality in a Wireless Feedback Control System. - Ryota Mizutani; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

BER characteristic of optical-OFDM using OCI. - Yuki Goto; Isamu Takai; Takaya Yamazato; Hiraku Okada; Akitoshi Fujii; Shoji Kawahito; Shintaro Arai; Tomohiro Yendo; Koji Kamakura (APCCAS, 2014)

Improving communication rate of visible light communication system using high-speed camera. - Daigo Iwase; Makoto Kasai; Tomohiro Yendo; Shintaro Arai; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii (APCCAS, 2014)

Channel fluctuation measurement 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 (APCCAS, 2014)

Multiple LED arrays acquisition for image-sensor-based I2V-VLC using block matching. - Shintaro Arai; Yasutaka Shiraki; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Tomohiro Yendo (CCNC, 2014)

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 (GLOBECOM Workshops, 2014)

An information sharing method using compressed sensing in wireless distributed networks. - Shuhei Suzaki; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (GLOBECOM Workshops, 2014)

Image-sensor-based visible light communication for automotive applications. - Takaya Yamazato; Isamu Takai; Hiraku Okada; Toshiaki Fujii; Tomohiro Yendo; Shintaro Arai; Michinori Andoh; Tomohisa Harada; Keita Yasutomi; Keiichiro Kagawa; Shoji Kawahito (IEEE Commun. Mag., 2014)

Mutual Information Evaluation and Optimization of Intermittent Transmission Methods in Energy Harvesting Wireless Sensor Networks. - Xiaohui Fan; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (IEICE Trans. Commun., 2014)

Spectrum Sharing Overlay System with a Repeater for the Primary Signal. - Jun Naganawa; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

An analyzing method using self-organizing map for MIMO mesh networks. - Yoshihiro Minematsu; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (APCC, 2015)

Intensity estimation of LEDs from spatially and temporally mixed images in image sensor communication. - Takazumi Asai; Daigo Iwase; Ryoko Ieki; Tomohiro Yendo; Shintaro Arai; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Koji Kamakura (APSIPA, 2015)

Cooperative repeaters to improve data collection in low power generation for solar-powered wireless sensor networks. - Naoya Ishitani; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (CCNC, 2015)

Construction of a node-combined wireless network for large-scale disasters. - Atsushi Mori; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama; Kenichi Mase (CCNC, 2015)

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 (GLOBECOM Workshops, 2015)

Experimental Evaluation of a Distributed Sensor Network Applying Source Node Grouping. - Yohsuke Ishikawa; Hiraku Okada; Katsuhiro Naito; Kentaro Kobayashi; Masaaki Katayama (CANDAR, 2015)

Message communication system using unmanned aerial vehicles under large-scale disaster environments. - Kenichi Mase; Hiraku Okada (PIMRC, 2015)

Area Transmission Efficiency of Single-User and Multi-User MIMO in Grid-Topology Wireless Mesh Networks. - Hironori Kusumoto; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (VTC Spring, 2015)

Predictive Control for Performance Improvement of a Feedback Control System Using Cyclostationary Channels. - Cesar Carrizo; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

Outdoor Road-to-Vehicle Visible Light Communication Using On-Vehicle High-Speed Camera. - Chinthaka Premachandra; Tomohiro Yendo; Mehrdad Panahpour Tehrani; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Masayuki Tanimoto (Int. J. Intell. Transp. Syst. Res., 2015)

Vehicle Motion and Pixel Illumination Modeling for Image Sensor Based Visible Light Communication. - Takaya Yamazato; Masayuki Kinoshita; Shintaro Arai; Eisho Souke; Tomohiro Yendo; Toshiaki Fujii; Koji Kamakura; Hiraku Okada (IEEE J. Sel. Areas Commun., 2015)

On- Off Error Control Coding Scheme for Minimizing Tracking Error in Wireless Feedback Control Systems. - Shingo Hattori; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEEE Trans. Ind. Informatics, 2015)

Position estimation of LED matrix in image sensor communication. - Takazumi Asai; Tomohiro Yendo; Shintaro Arai; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Koji Kamakura (APSIPA, 2016)

Range estimation scheme for integrated I2V-VLC using a high-speed image sensor. - Takaya Yamazato; A. Ohmura; Hiraku Okada; Toshiaki Fujii; Tomohiro Yendo; Shintaro Arai; Koji Kamakura (ICC Workshops, 2016)

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 (IECON, 2016)

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 (IECON, 2016)

A study on h-infinity controller design considering the influence of packet loss as a disturbance. - Takashi Ogura; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IECON, 2016)

Visible light communication systems using blue color difference modulation for digital signage. - Sho Sato; Hiraku Okada; Kentaro Kobayashi; Takaya Yamazato; Masaaki Katayama (PIMRC, 2016)

Performance evaluation of information embedding schemes based on wavelet transform for parallel transmission visible light communication systems. - Yufeng Lin; Tadahiro Wada; Kaiji Mukumoto; Hiraku Okada (GCCE, 2017)

Modeling and parameter estimation of vehicle vibration inducing transmitter displacement in ITS image sensor communication. - Masayuki Kinoshita; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Shintaro Arai; Tomohiro Yendo; Koji Kamakura (ICC Workshops, 2017)

Selective transmission of control information based on channel periodicity in PLC-based multiple-machine control. - Shun Sawada; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (ISPLC, 2017)

A cross-layer design of optimized receiver for wireless state feedback control. - Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (SPAWC, 2017)

Performance Improvement of Low-Latency V2I Uplink Using Superposed Cooperative V2V Transmission. - Eiji Okamoto; Hiraku Okada; Yoshinao Ishii; Satoshi Makido (VTC Fall, 2017)

A Study on Variable Length Channel Coding for State Feedback in Wireless Control Systems. - Yosuke Miwa; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (WCNC, 2017)

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 (WCNC, 2017)

The Uplink Visible Light Communication Beacon System for Universal Traffic Management. - Takaya Yamazato; Naoaki Kawagita; Hiraku Okada; Toshiaki Fujii; Tomohiro Yendo; Shintaro Arai; Koji Kamakura (IEEE Access, 2017)

H-Infinity Control Design Considering Packet Loss as a Disturbance for Networked Control Systems. - Takashi Ogura; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

Link Quality Information Sharing by Compressed Sensing and Compressed Transmission for Arbitrary Topology Wireless Mesh Networks. - Hiraku Okada; Shuhei Suzaki; Tatsuya Kato; Kentaro Kobayashi; Masaaki Katayama (IEICE Trans. Commun., 2017)

Combination of a wireless sensor network and drone using infrared thermometers for smart agriculture. - Tomoya Moribe; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (CCNC, 2018)

A Proposal of Information Embedding Scheme Based on Discrete Cosine Transform in Parallel Transmission Visible Light Communications. - Ryota Mushu; Tadahiro Wada; Kaiji Mukumoto; Hiraku Okada (GCCE, 2018)

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 (GLOBECOM Workshops, 2018)

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 (GLOBECOM, 2018)

Flight Schemes Considering Breaks for Wireless Relay Networks Using Drones during Large-Scale Disasters. - Hiroki Yanai; Hiraku Okada; Kentaro Kobayashi; Masaaki Katayama (VTC Fall, 2018)

Simplified Vehicle Vibration Modeling for Image Sensor Communication. - Masayuki Kinoshita; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Shintaro Arai; Tomohiro Yendo; Koji Kamakura (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018)

A Cross-Layer Optimized Receiver Design for Wireless Feedback Control Systems. - Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEEE Trans. Commun., 2018)

Cross-layer combination of predictive control and error correction coding for wireless feedback control. - Kohei Kasai; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (APWCS, 2019)

Data signal modulation scheme based on perceptually uniform color space for image sensor-based visible light communication. - Taito Sasaki; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (APWCS, 2019)

Stereo Ranging Method Using LED Transmitter for Visible Light Communication. - Masayuki Kinoshita; Koji Kamakura; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Shintaro Arai; Tomohiro Yendo (GLOBECOM, 2019)

Optical Wireless CDMA Receiver with Hard Limiters and Successive Interference Cancellers. - Shuto Ito; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (ICC Workshops, 2019)

Performance Analysis of Uplink V2I Cooperative Transmission Scheme in Practical Road Environments. - Hayato Ishikawa; Eiji Okamoto; Shouhei Okamoto; Hiraku Okada; Satoshi Makido (ICOIN, 2019)

Synchronous CDMA for a PLC-based multi-machine control system. - Mitsuru Hasegawa; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IECON, 2019)

Inclination of Flying Drones in Aerial Wireless Relay Networks. - Hiraku Okada; Jyo Suzuki; Hiroki Yanai; Kentaro Kobayashi; Masaaki Katayama (VTC Fall, 2019)

Guaranteed Time Slot Allocation for IEEE 802.15.4-Based Wireless Feedback Control Systems. - Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (IEEE Access, 2019)

Foreword. - Hiraku Okada (IEICE Trans. Commun., 2019)

BER Measurement for Transmission Pattern Design of ITS Image Sensor Communication Using DMD Projector. - Tomoya Arisue; Takaya Yamazato; Hiraku Okada; Toshiaki Fujii; Masayuki Kinoshita; Koji Kamakura; Shintaro Arai; Tomohiro Yendo (CCNC, 2020)

Performance improvement of V2I uplink transmission on far vehicles using frequency scheduling-based cooperative V2V relay transmission. - Hayato Ishikawa; Eiji Okamoto; Hiraku Okada; Satoshi Makido (CCNC, 2020)

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 (GLOBECOM (Workshops), 2020)

Experimental Evaluation of an Indoor Long Distance High Speed Imaging MIMO System. - Akifumi Iwasa; Chedlia Ben Naila; Kentaro Kobayashi; Hiraku Okada; Masaaki Katayama (GLOBECOM, 2020)

An Overview of Aerial Wireless Relay Networks for Emergency Communications during Large-Scale Disasters. - Hiraku Okada (IEICE Trans. Commun., 2020)

Vehicle Distance Measurement based on Visible Light Communication Using Stereo Cameras. - Ruiyi Huang; Takaya Yamazato; Masayuki Kinoshita; Hiraku Okada; Koji Kamakura; Shintaro Arai; Tomohiro Yendo; Toshiaki Fujii (IV, 2021)

Experimental Evaluation of a Wireless LAN Relay System Using Unmanned Aerial Vehicles. - Hiroki Tanaka; Nobuo Matsui; Yuta Watanabe; Hiraku Okada; Masaaki Katayama (VTC Spring, 2021)

Flight Model Using Voronoi Tessellation for a Delay-Tolerant Wireless Relay Network Using Drones. - Hiroyuki Asano; Hiraku Okada; Chedlia Ben Naila; Masaaki Katayama (IEEE Access, 2021)

A UAV Flight Method for Non-Uniform User Distributions in Aerial Wireless Relay Networks. - Hiroyuki Asano; Hiraku Okada; Chedlia Ben Naila; Masaaki Katayama (CCNC, 2022)

Propagation Characteristics of 920 MHz band LPWA for Inspections of Power Transmission Lines Using UAVs. - Tekkan Okuda; Hiraku Okada; Hiroki Tanaka; Toshihiro Fujiwara; Nobuo Matsui; Chedlia Ben Naila; Masaaki Katayama (CCNC, 2022)

Spatial Diversity for Mitigating Near-far Problem in Wireless Optical CDMA Systems. - Taiga Kasukabe; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (PIMRC, 2022)

Design and Evaluation of Optimum Receiver for Turbulent Underwater Optical Wireless Channel. - Kenzo Yamada; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (VTC Spring, 2022)

Voronoi-Based UAV Flight Method for Non-Uniform User Distribution in Delay-Tolerant Aerial Networks. - Hiroyuki Asano; Hiraku Okada; Chedlia Ben Naila; Masaaki Katayama (IEICE Trans. Commun., 2022)

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 (APCC, 2023)

Communication-Aware Flight Algorithm for UAVs in Delay-Tolerant Aerial Networks. - Hiroyuki Asano; Hiraku Okada; Chedlia Ben Naila; Masaaki Katayama (CCNC, 2023)

Mitigation of Vessel Motion Effects for MIMO Underwater Optical Wireless Communication System using Spatial Coding. - Hitoshi Ando; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (ICC Workshops, 2023)

Robust Video Transmission for Robot Teleoperation Over Networks with Packet Loss. - Fumiharu Sasaki; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (IECON, 2023)

Interpolation of Missing Data for Wireless Operation of Industrial Robot. - Yosuke Takagi; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (IECON, 2023)

Performance of Intelligent Reflecting Surface Based-FSO Link Under Strong Turbulence and Spatial Jitter. - Takumi Ishida; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (ISCC, 2023)

High Speed Optical Wireless Uplink using Multiuser MIMO with Angle Diversity. - Xuejuan Zhu; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (PIMRC, 2023)

Performance Analysis of Intelligent Reflecting Surface Assisted-FSO System over Turbulent Channels with Pointing Errors. - Takumi Ishida; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (VTC2023-Spring, 2023)

Transmission Control Considering Different Available Channels for CRDSA/IRSA in Satellite IoT Systems. - Kansuke Kumazawa; Hiraku Okada; Munehiro Matsui; Koyo Tategami; Daisuke Goto; Kiyohiko Itokawa; Fumihiro Yamashita; Masaaki Katayama (IEEE Access, 2023)

Simultaneous Visible Light Communication and Ranging Using High-Speed Stereo Cameras Based on Bicubic Interpolation Considering Multi-Level Pulse-Width Modulation. - Ruiyi Huang; Masayuki Kinoshita; Takaya Yamazato; Hiraku Okada; Koji Kamakura; Shintaro Arai; Tomohiro Yendo; Toshiaki Fujii (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

Design and Analysis of a Multi-Rate Multiple-Access Differential Chaos Shift Keying System. - Meiyuan Miao; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (IEICE Trans. Commun., 2023)

Experimental Evaluation of 920 MHz Band Air-to-Ground Radio Wave Propagation in Mountainous Areas. - Tekkan Okuda; Hiraku Okada; Chedlia Ben Naila; Masaaki Katayama (IEICE Trans. Commun., 2023)

Communication-Aware Flight Algorithms for UAV-Based Delay-Tolerant Networks. - Hiroyuki Asano; Hiraku Okada; Chedlia Ben Naila; Masaaki Katayama (IEICE Trans. Commun., 2023)

Performance Evaluation of mmWave Terminal Cooperative Communications Using Directional Antennas. - Hiraku Okada; Yiche Li; Chedlia Ben Naila (APCC, 2024)

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 (APCC, 2024)

Performance Analysis of LDPC Coded Outdoor Long-Distance Imaging MIMO System. - Daiki Ishikawa; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (ICNC, 2024)

An Experimental Evaluation of Air-to-Air MIMO Transmission in Wireless LAN Relay Systems Using Drones. - Shion Kawabe; Hiraku Okada; Chedlia Ben Naila; Masaaki Katayama (ICOIN, 2024)

Relay-Assisted UOWC-FSO System Under Pointing Errors. - Hao Wang; Chedlia Ben Naila; Hiraku Okada; Masaaki Katayama (VTC Spring, 2024)

Adaptive Transmission Control Considering Available Channels Difference Among Terminals in Satellite IoT Systems Using CRDSA/IRSA. - Hiraku Okada; Kansuke Kumazawa; Munehiro Matsui; Koyo Tategami; Daisuke Goto; Kiyohiko Itokawa; Fumihiro Yamashita (IEEE Access, 2025)