128 citations · 200 across the 25 of their papers we have counts for
25 papers
Smart Mobility Digital Twin for Automated Driving: Design and Proof-of-Concept
Kui Wang, Zongdian Li, Tao Yu +1
During the past decade, smart mobility and intelligent vehicles have attracted increasing attention, because they promise to create a highly efficient and safe transportation syste…
The Seven Worlds and Experiences of the Wireless Metaverse: Challenges and Opportunities
Omar Hashash, Christina Chaccour, Walid Saad +3
The wireless metaverse will create diverse user experiences at the intersection of the physical, digital, and virtual worlds. These experiences will enable novel interactions betwe…
Towards a Decentralized Metaverse: Synchronized Orchestration of Digital Twins and Sub-Metaverses
Omar Hashash, Christina Chaccour, Walid Saad +2
Accommodating digital twins (DTs) in the metaverse is essential to achieving digital reality. This need for integrating DTs into the metaverse while operating them at the network e…
Experiment of Multi-UAV Full-Duplex System Equipped with Directional Antennas
Tao Yu, Kento Kajiwara, Kiyomichi Araki +1
One of the key enablers for the realization of a variety of unmanned aerial vehicle (UAV)-based systems is the high-performance communication system linking many UAVs and ground st…
Context-Based MEC Platform for Augmented-Reality Services in 5G Networks
Yue Wang, Tao Yu, Kei Sakaguchi
Augmented reality (AR) has drawn great attention in recent years. However, current AR devices have drawbacks, e.g., weak computation ability and large power consumption. To solve t…
Spectrum Sharing between Directional-Antenna- Equipped UAV System and Terrestrial Systems
Tao Yu, Kento Kajiwara, Kiyomichi Araki +1
Unmanned aerial vehicles (UAVs)-based applications, such as surveillance systems and wireless relays, are attracting increasing attention from academia and industrial fields. The h…
Full-Duplex Aerial Communication System for Multiple UAVs with Directional Antennas
Tao Yu, Kiyomichi Araki, Kei Sakaguchi
UAV-based wireless systems, such as wireless relay and remote sensing, have attracted great attentions from academia and industry. To realize them, a high-performance wireless aeri…
Ground Experiment of Full-Duplex Multi-UAV System Enabled by Directional Antennas
Tao Yu, Kiyomichi Araki, Kei Sakaguchi
A high performance multi-UAV communication system, which bridges multiple UAVs and ground station, is one of the key enablers to realize a variety of UAV-based systems. To address…
Towards mmWave V2X in 5G and Beyond to Support Automated Driving
Kei Sakaguchi, Ryuichi Fukatsu, Tao Yu +8
Millimeter wave provides high data rates for Vehicle-to-Everything (V2X) communications. This paper motivates millimeter wave to support automated driving and begins by explaining…
Proof-of-Concept of Uncompressed 4K Video Transmission from Drone through mmWave
Yoshitaka Takaku, Yohei Kaieda, Tao Yu +1
Drones are attracting increasing attention in varieties of research fields because of their flexibility and are expected to be applied to a wide range of potential applications, am…
A Study on Optimal Beam Patterns for Single User Massive MIMO Transmissions
Maki Arai, Kei Sakaguchi, Kiyomichi Araki
This paper proposes optimal beam patterns of analog beamforming for SU (Single User) massive MIMO (Multi-Input Multi-Output) transmission systems. For hybrid beamforming in SU mass…
A Guide of Fingerprint Based Radio Emitter Localization using Multiple Sensors
Tao Yu, Azril Haniz, Kentaro Sano +6
Location information is essential to varieties of applications. It is one of the most important context to be detected by wireless distributed sensors, which is a key technology in…
Optimal Design Method of MIMO Antenna Directivities and Corresponding Current Distributions by Using Spherical Mode Expansion
Maki Arai, Masashi Iwabuchi, Kei Sakaguchi +1
This paper proposes a new methodology to design optimal antennas for MIMO (Multi-Input Multi-Output) communication systems by using spherical mode expansion. Given spatial channel…
Where, When, and How mmWave is Used in 5G and Beyon
Kei Sakaguchi, Thomas Haustein, Sergio Barbarossa +18
Wireless engineers and business planners commonly raise the question on where, when, and how millimeter-wave (mmWave) will be used in 5G and beyond. Since the next generation netwo…
Design and implementation of lighting control system using battery-less wireless human detection sensor networks
Tao Yu, Yusuke Kuki, Gento Matsushita +3
Artificial lighting is responsible for a large portion of total energy consumption and has great potential for energy saving. This paper designs an LED light control algorithm base…
Wi-Fi/WiGig Coordination for Optimal WiGig Concurrent Transmissions in Random Access Scenario
Ehab Mahmoud Mohamed, Kei Sakaguchi, Seiichi Sampei
Wireless Gigabit (WiGig) access points (APs) using 60 GHz unlicensed frequency band are considered as key enablers for future Gbps WLANs. Due to its short range transmission with h…
Experimental Study on Battery-less Sensor Network Activated by Multi-point Wireless Energy Transmission
Daiki Maehara, Gia Khanh Tran, Kei Sakaguchi +1
This paper empirically validates battery-less sensor activation via wireless energy transmission to release sensors from wires and batteries. To seamlessly extend the coverage and…
Millimeter-wave Wireless LAN and its Extension toward 5G Heterogeneous Networks
Kei Sakaguchi, Ehab Mahmoud Mohamed, Hideyuki Kusano +9
Millimeter-wave (mmw) frequency bands, especially 60 GHz unlicensed band, are considered as a promising solution for gigabit short range wireless communication systems. IEEE standa…
Delayed Offloading using Cloud Cooperated Millimeter Wave Gates
Ehab Mahmoud Mohamed, Kei Sakaguchi, Seiichi Sampei
Increasing wireless cellular networks capacity is one of the major challenges for the coming years, especially if we consider the annual doubling of mobile user traffic. Towards th…
WiFi Assisted Multi-WiGig AP Coordination for Future Multi-Gbps WLANs
Ehab Mahmoud Mohamed, Hideyuki Kusano, Kei Sakaguchi +1
Wireless Gigabit (WiGig) access points (APs) using 60 GHz unlicensed frequency band are considered as key enablers for future Gbps wireless local area networks (WLANs). Exhaustive…
Millimeter Wave Beamforming Based on WiFi Fingerprinting in Indoor Environment
Ehab Mahmoud Mohamed, Kei Sakaguchi, Seiichi Sampei
Millimeter Wave (mm-w), especially the 60 GHz band, has been receiving much attention as a key enabler for the 5G cellular networks. Beamforming (BF) is tremendously used with mm-w…
Millimeter-wave Evolution for 5G Cellular Networks
Kei Sakaguchi, Gia Khanh Tran, Hidekazu Shimodaira +9
Triggered by the explosion of mobile traffic, 5G (5th Generation) cellular network requires evolution to increase the system rate 1000 times higher than the current systems in 10 y…
Experiments Validating the Effectiveness of Multi-point Wireless Energy Transmission with Carrier Shift Diversity
Daiki Maehara, Gia Khanh Tran, Kei Sakaguchi +2
This paper presents a method to seamlessly extend the coverage of energy supply field for wireless sensor networks in order to free sensors from wires and batteries, where the mult…
Distributed Power Control Network and Green Building Test-bed for Demand Response in Smart Grid
Kei Sakaguchi, Van Ky Nguyen, Yu Tao +2
It is known that demand and supply power balancing is an essential method to operate power delivery system and prevent blackouts caused by power shortage. In this paper, we focus o…