Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Full-stack Hybrid Beamforming in mmWave 5G Networks   This paper analyzes Hybrid Beamforming (HBF) and Multi-User Multiple-Input
Multiple-Output (MU-MIMO) in millimeter wave (mmWave) 5th generation (5G)
cellular networks considering the full protocol stack with TCP/IP traffic and
MAC scheduling. Prior work on HBF and MU-MIMO has assumed full-buffer
transmissions and studied link-level performance. We report non-trivial
interactions between the HBF technique, the front-loaded channel estimation
pilot scheme in NR, and the constraints of MU-MIMO scheduling. We also report
that joint multi-user beamforming design is imperative, in the sense that the
MU-MIMO system cannot be fully exploited when implemented as a mere collection
of single-user analog beams working in parallel. By addressing these issues,
throughput can be dramatically increased in mmWave 5G networks by means of
Spatial Division Multiple Access (SDMA).

18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex