Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Joint Power and Resource Allocation for Block-Fading Relay-Assisted
  Broadcast Channels   We provide the solution for optimizing the power and resource allocation over
block-fading relay-assisted broadcast channels in order to maximize the long
term average achievable rates region of the users. The problem formulation
assumes regenerative (repetition coding) decode-and-forward (DF) relaying
strategy, long-term average total transmitted power constraint, orthogonal
multiplexing of the users messages within the channel blocks, possibility to
use a direct transmission (DT) mode from the base station to the user terminal
directly or a relaying (DF) transmission mode, and partial channel state
information. We show that our optimization problem can be transformed into an
equivalent "no-relaying" broadcast channel optimization problem with each
actual user substituted by two virtual users having different channel qualities
and multiplexing weights. The proposed power and resource allocation strategies
are expressed in closed-form that can be applied practically in centralized
relay-assisted wireless networks. Furthermore, we show by numerical examples
that our scheme enlarges the achievable rates region significantly.

36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: math-ph