Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Energy Efficiency in Hybrid Beamforming Large-scale mmWave Multiuser
  MIMO with Spatial Modulation   The problem of radio resource allocation for global energy efficiency (GEE)
maximization in mmWaves large-scale multiple-input multiple-output (MIMO)
systems using hybrid-beamforming with spatial modulation is addressed. The
theoretical properties of the optimization problem at hand are analyzed and two
provably convergent optimization algorithms with affordable complexity are
proposed. The former achieves the global optimum, while the latter trades off
optimality with a lower computational complexity. Nevertheless, numerical
results show that both algorithms attain global optimality in practical
scenarios.

3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph