Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Design of Modular Reflecting EM Skins for Enhanced Urban Wireless
  Coverage   The design of modular, passive, and static artificial metasurfaces to be used
as electromagnetic skins (EMSs) of buildings for improving the coverage in
urban millimeter-wave communication scenarios is addressed. Towards this end,
an ad-hoc design strategy is presented to determine optimal trade-off
implementative solutions that assure a suitable coverage of the areas of
interest, where the signal from the base station is too weak, with the minimum
complexity. More specifically, the admissible surface in the building facade is
first partitioned into tiles, which are the minimum-size elements of the
artificial coating (i.e., the building block of an EMS). Then, the search for
the optimal EMS layout (i.e., the minimum number and the positions of the tiles
to be installed) is carried out with a binary multi-objective optimization
method. Representative numerical results are reported and discussed to point
out the features and the potentialities of the EMS solution in the smart
electromagnetic environment (SEME) as well as the effectiveness of the proposed
design method.

17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph