Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Centralized Caching and Delivery of Correlated Contents over Gaussian
  Broadcast Channels   Content delivery in a multi-user cache-aided broadcast network is studied,
where a server holding a database of correlated contents communicates with the
users over a Gaussian broadcast channel (BC). The minimum transmission power
required to satisfy all possible demand combinations is studied, when the users
are equipped with caches of equal size. Assuming uncoded cache placement, a
lower bound on the required transmit power as a function of the cache capacity
is derived. An achievable centralized caching scheme is proposed, which not
only utilizes the user's local caches, but also exploits the correlation among
the contents in the database. The performance of the scheme, which provides an
upper bound on the required transmit power for a given cache capacity, is
characterized. Our results indicate that exploiting the correlations among the
contents in a cache-aided Gaussain BC can provide significant energy savings.

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The categories of this paper are: quant-ph
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The categories of this paper are: stat
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: dg-ga