… as a relay in the practical BS-GUs cellular network, and jointly optimize the radius of UAV
circular trajectory … the energy-efficiency of the UAV relay network. Here, we assume that limited …

… Simulation results show that the outage probability of the proposed solution is
significantly lower than that of the fixed power relay and circle trajectory for the UAV relay. …

… trajectory relay’s outage probability performance with that of the circular trajectory relay and
the fixed relay… Joint energy and trajectory optimization for UAV-enabled relaying network with …

… UAV, as an airbase station, is composed of a relay network for public daily … mobile relay
systems of UAVs in a circular trajectory. This enlightened the author to set the circular trajectory …

… Simulation results show that the outage probability of the proposed algorithm is significantly
lower than that of the circle trajectory for the UAV relay. Index Terms—UAV, relay network, …

… algorithm is proposed for a UAV relay with a circular trajectory. … trajectory optimization and
power allocation needs further studies. In this paper, we consider an uplink UAV relay network …

… the throughput of the AF relay networks. However, the studies [… factor by adopting trajectory
design in SNR derived in (46). … Since the flight path is circular, the location of the relay alters …

… becoming a promising technique for future wireless networks. However, its security remains
a … (PA) scheme for NOMA-UAV networks with circular trajectory, to maximize the sum rate of …

… By applying a circular trajectory and decode-and-forward (DF) relaying strategy, … relay users.
In [22], the authors investigated the spectrum sharing planning problem for FD UAV relaying …

… As the number of users increases to multiple pairs, none of these simple trajectory initialization
schemes such as the circularbased or the line-based can effectively satisfy the information…