Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Degrees of Freedom of Interference Networks with Transmitter-Side Caches   This paper studies cache-aided interference networks with arbitrary number of
transmitters and receivers, whereby each transmitter has a cache memory of
finite size. Each transmitter fills its cache memory from a content library of
files in the placement phase. In the subsequent delivery phase, each receiver
requests one of the library files, and the transmitters are responsible for
delivering the requested files from their caches to the receivers. The
objective is to design schemes for the placement and delivery phases to
maximize the sum degrees of freedom (sum-DoF) which expresses the capacity of
the interference network at the high signal-to-noise ratio regime. Our work
mainly focuses on a commonly used uncoded placement strategy. We provide an
information-theoretic bound on the sum-DoF for this placement strategy. We
demonstrate by an example that the derived bound is tighter than the bounds
existing in the literature for small cache sizes. We propose a novel delivery
scheme with a higher achievable sum-DoF than those previously given in the
literature. The results reveal that the reciprocal of sum-DoF decreases
linearly as the transmitter cache size increases. Therefore, increasing cache
sizes at transmitters translates to increasing the sum-DoF and, hence, the
capacity of the interference networks.

31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an