Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Secure Vehicular Communications through Reconfigurable Intelligent
  Surfaces   Reconfigurable intelligent surfaces (RIS) is considered as a revolutionary
technique to improve the wireless system performance by reconfiguring the radio
wave propagation environment artificially. Motivated by the potential of RIS in
vehicular networks, we analyze the secrecy outage performance of RIS-aided
vehicular communications in this paper. More specifically, two vehicular
communication scenarios are considered, i.e., a vehicular-to-vehicular (V2V)
communication where the RIS acts as a relay and a vehicular-to-infrastructure
(V2I) scenario where the RIS functions as the receiver. In both scenarios, a
passive eavesdropper is present attempting to retrieve the transmitted
information. Closed-form expressions for the secrecy outage probability (SOP)
are derived and verified. The results demonstrate the potential of improving
secrecy with the aid of RIS under both V2V and V2I communications.

28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph