Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Robust Trajectory and Resource Allocation Design for Secure UAV-aided
  Communications   This paper aims to enhance the physical layer security against potential
internal eavesdroppings by exploiting the maneuverability of an unmanned aerial
vehicle (UAV). We consider a scenario where two receivers with different
security clearance levels require to be served by a legitimate transmitter with
the aid of the UAV. We jointly design the trajectory and resource allocation to
maximize the accumulated system confidential data rate. The design is
formulated as a mixed-integer non-convex optimization problem which takes into
account the partial position information of a potential eavesdropper. To
circumvent the problem non-convexity, a series of transformations and
approximations are proposed which facilitates the design of a computationally
efficient suboptimal solution. Simulation results are presented to provide
important system design insights and demonstrate the advantages brought by the
robust joint design for enhancing the physical layer security.

31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas