Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Xilinx RF-SoC-based Digital Multi-Beam Array Processors for 28/60~GHz
  Wireless Testbeds   Emerging wireless applications such as 5G cellular, large intelligent
surfaces (LIS), and holographic massive MIMO require antenna array processing
at mm-wave frequencies with large numbers of independent digital transceivers.
This paper summarizes the authors' recent progress on the design and testing of
28 GHz and 60 GHz fully-digital array processing platforms based on wideband
reconfigurable FPGA-based software-defined radios (SDRs). The digital baseband
and microwave interfacing aspects of the SDRs are implemented on single-chip RF
system-on-chip (RF-SoC) processors from Xilinx. Two versions of the RF-SoC
technology (ZCU-111 and ZCU-1275) were used to implement fully-digital
real-time array processors at 28~GHz (realizing 4 parallel beams with 0.8 GHz
bandwidth per beam) and 60~GHz (realizing 4 parallel beams with 1.8~GHz
bandwidth per beam). Dielectric lenslet arrays fed by a digital phased-array
feed (PAF) located on the focal plane are proposed for further increasing
antenna array gain.

15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con