Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Physical Layer Security for Two-Way Untrusted Relaying with Friendly
  Jammers   In this paper, we consider a two-way relay network where two sources can
communicate only through an untrusted intermediate relay, and investigate the
physical layer security issue of this two-way relay scenario. Specifically, we
treat the intermediate relay as an eavesdropper from which the information
transmitted by the sources needs to be kept secret, despite the fact that its
cooperation in relaying this information is essential. We indicate that a
non-zero secrecy rate is indeed achievable in this two-way relay network even
without external friendly jammers. As for the system with friendly jammers,
after further analysis, we can obtain that the secrecy rate of the sources can
be effectively improved by utilizing proper jamming power from the friendly
jammers. Then, we formulate a Stackelberg game model between the sources and
the friendly jammers as a power control scheme to achieve the optimized secrecy
rate of the sources, in which the sources are treated as the sole buyer and the
friendly jammers are the sellers. In addition, the optimal solutions of the
jamming power and the asking prices are given and a distributed updating
algorithm to obtain the Stakelberg equilibrium is provided for the proposed
game. Finally, the simulations results verify the properties and the efficiency
of the proposed Stackelberg game based scheme.

6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn