Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Energy Efficiency Optimization of Generalized Spatial Modulation with
  Sub-Connected Hybrid Precoding   Energy efficiency (EE) optimization of millimeter wave (mm-Wave) massive
multiple-input multiple-output (MIMO) systems is emerging as an important
challenge for the fifth generation (5G) mobile communication systems. However,
the power of radio frequency (RF) chains increases sharply due to the high
carrier frequency in mm-Wave massive MIMO systems. To overcome this issue, a
new energy efficiency optimization solution is proposed based on the structure
of the generalized spatial modulation (GSM) and sub-connected hybrid precoding
(HP). Moreover, the computation power of mm-Wave massive MIMO systems is
considered for optimizing the EE. Simulation results indicate that the EE of
the GSM-HP scheme outperforms the full digital precoding (FDP) scheme in the
mm-Wave massive MIMO scene, and 88\% computation power can be saved by the
proposed GSM-HP scheme.

8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat