Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Full-Duplex Enabled Mobile Edge Caching: From Distributed to Cooperative
  Caching   Mobile edge caching (MEC) has received much attention as a promising
technique to overcome the stringent latency and data hungry requirements in the
future generation wireless networks. Meanwhile, full-duplex (FD) transmission
can potentially double the spectral efficiency by allowing a node to receive
and transmit in the same time/frequency block simultaneously. In this paper, we
investigate the delivery time performance of full-duplex enabled MEC (FD-MEC)
systems, in which the users are served by distributed edge nodes (ENs), which
operate in FD mode and are equipped with a limited storage memory. Firstly, we
analyse the FD-MEC with different levels of cooperation among the ENs and take
into account a realistic model of self-interference cancellation. Secondly, we
propose a framework to minimize the system delivery time of FD-MEC under both
linear and optimal precoding designs}. Thirdly, to deal with the non-convexity
of the formulated problems, two iterative optimization algorithms are proposed
based on the inner approximation method, whose convergence is analytically
guaranteed. Finally, the effectiveness of the proposed designs are demonstrated
via extensive numerical results. {It is shown that the cooperative scheme
mitigates inter-user and self interference significantly better than the
distributed scheme at an expense of inter-EN cooperation. In addition, we show
that minimum mean square error (MMSE)-based precoding design achieves the best
performance-complexity trade-off, compared with the zero-forcing and optimal
designs.

22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an