Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Radio Frequency Interference Management with Free-Space Optical
  Communication and Photonic Signal Processing   We design and experimentally demonstrate a radio frequency interference
management system with free-space optical communication and photonic signal
processing. The system provides real-time interference cancellation in 6 GHz
wide bandwidth.

11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex