- UAV Applications and Optimization
- Mobile Ad Hoc Networks
- Distributed Control Multi-Agent Systems
- Cooperative Communication and Network Coding
- Energy Efficient Wireless Sensor Networks
- Opportunistic and Delay-Tolerant Networks
- Security in Wireless Sensor Networks
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Advanced Control and Stabilization in Aerospace Systems
- Vehicular Ad Hoc Networks (VANETs)
- Robotic Path Planning Algorithms
- Robotics and Automated Systems
- Advanced MIMO Systems Optimization
- Stellar, planetary, and galactic studies
Tohoku University
2013-2017
National Institute of Information and Communications Technology
2016
Recently, the UAS has been extensively exploited for data collection from remote and dangerous or inaccessible areas. While most of its existing applications have directed toward surveillance monitoring tasks, can play a significant role as communication network facilitator. For example, may effectively extend capability to disaster-affected people (who lost cellular Internet infrastructures on ground) by quickly constructing relay system among number UAVs. However, distance between centers...
Recently, the big data emerged as a hot topic because of tremendous growth information and communication technology. One highly anticipated key contributors in future networks is distributed wireless sensor (WSNs). Although generated by an individual may not appear to be significant, overall across numerous sensors densely WSNs can produce significant portion data. Energy-efficient gathering is, therefore, challenging research area. most effective solutions address this challenge utilize...
Recently, unmanned aircraft systems (UASs) have attracted attention as a new avenue for commercial services. Using the flexible mobility of aircrafts (UAs), services can be operated in wide areas. However, there is problem wireless communication between UA and its ground station. When several UASs are within neighboring airspace, wireless-communication conflicts occur. One most effective solutions this issue to decide schedule using time-division multiple access (TDMA) scheme. Furthermore,...
Unmanned aerial vehicles (UAVs) can be used for a wide variety of applications, including agriculture, infrastructure maintenance, and disaster response. In this paper, we focus on the use UAVs Multiple equipped with communication terminals deployed to construct an airborne network connecting isolated areas. Another is real-time video transmission from UAV ground station, using multiple operating simultaneously by different organizations, e.g., rescue teams, fire departments, broadcasting...
In wireless sensor networks with mobile sink, sink traverse the sensing area and aggregate data from nodes near sink. this scheme, can reduce total energy consumption by dividing network to multiple clusters. Since, is proportional sum of square communication distance, into smaller clusters amount required for transmission. Previous researches concluded that increasing number cluster reduces However, these ideas do not take account due request message flooding in dense networks. paper, we...
We study the formation and early evolution of young stellar objects (YSOs) using three-dimensional non-ideal magnetohydrodynamic (MHD) simulations to investigate effect cosmic ray ionization rate dust fraction (or amount grains) on circumstellar disk formation. Our show that a higher lower lead (i) smaller magnetic resistivity ambipolar diffusion, (ii) size mass, (iii) an earlier timing outflow greater angular momentum outflow. In particular, at high rate, disks formed in simulation are...