A5005365496- UAV Applications and Optimization
- Advanced Wireless Communication Technologies
- Satellite Communication Systems
- Wireless Communication Security Techniques
Dalian University of Technology
2022-2024
In this paper, we consider a reconfigurable intelligent surface (RIS) assisted unmanned aerial vehicle (UAV) relaying communication system, where the RIS is mounted on UAV and can move at high speed. Compared with conventional static RIS, better performance more flexibility be achieved assistance of mobile UAV. We maximize average downlink throughput by jointly optimizing trajectory, passive beamforming source power allocation for each time slot. The formulated non-convex optimization...
This letter considers the sub-6GHz downlink communications from base station (BS) to mobile vehicles (MVs), where reconfigurable intelligent surface enabled unmanned aerial vehicle (RIS-UAV) serves as a passive relay. To achieve communication fairness, we aim maximize minimum throughput among all MVs via jointly optimizing RIS beamforming, MV scheduling, UAV trajectory and power allocation. The formulated problem is mixed-integer non-convex optimization which intractable solve. Hence,...
Unmanned ariel vehicle (UAV) can be used in cognitive radio (CR) due to its high mobility and line-of-sight (LoS) transmission. However, the throughput of secondary user (SU) may decrease because interference arising from spectrum sharing. Reconfigurable intelligent surface (RIS) overcome by reconstructing propagation links. Our aim is maximize SU subject constraint primary (PU) through joint optimization UAV's trajectory, RIS's passive beamforming power allocation. We divide formulated...