Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Open-Source Software Radio Platform for Research on Cellular Networked
  UAVs -- It Works!   Cellular network-connected unmanned aerial vehicles (UAVs) experience
different radio propagation conditions than radio nodes on the ground.
Therefore, it has become critical to investigate the performance of aerial
radios, both theoretically and through field trials. In this paper, we consider
low-altitude aerial nodes that are served by an experimental cellular network.
We provide a detailed description of the hardware and software components
needed for establishing a broadband wireless testbed for UAV communications
research using software radios. Results show that a testbed for innovation in
UAV communications and networking is feasible with commercial off-the-shelf
hardware, open-source software, and low-power signaling.

7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat