Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Joint Resource Allocation and Antenna Selection In the Uplink of OFDMA
  Networks   The problem of joint sub-channel, power control and antenna selection in the
uplink of OFDMA networks is investigated. The corresponding optimization
problem is a non convex mixed integer non-linear problem(MINLP). To tackle the
problem, an iterative two-step optimization problem is devised. First,~Having
fixed the selected antenna as well as the associated power of each user,~a
sub-channel assignment problem using the so-called Hungarian method is
proposed. Second, the joint power and antenna selection problem is extended
into a more elegant form through adding a penalty term to the objective
function forcing the relaxed boolean variables associated with antenna
selection problem to take binary values. To this end, the problem is restated
as a difference of two concave function (DC programming) and is effectively
solved in an iterative manner. The foregoing procedure is iteratively repeated
until approaching a fixed network throughput. Simulation results demonstrate
the superiority of the proposed method w.r.t. the exhaustive search with fixed
power control mechanism.

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The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
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The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat