Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Comparison of Single-Carrier vs. Digital Multi-Carrier Signaling
  for Long-Haul Transmission of Probabilistically Shaped Constellation Formats   We report on theoretical and experimental investigations of the nonlinear
tolerance of single carrier and digital multicarrier approaches with
probabilistically shaped constellations. Experimental transmission of PCS16QAM
is assessed at 120 GBd over an ultra-long-haul distance.

22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th