Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Uniqueness and Reconstruction Theorems for Pseudodifferential Operators
  with a Bandlimited Kohn-Nirenberg Symbol   Motivated by the problem of channel estimation in wireless communications, we
derive a reconstruction formula for pseudodifferential operators with a
bandlimited symbol. This reconstruction formula uses the diagonal entries of
the matrix of the pseudodifferential operator with respect to a Gabor system.
In addition, we prove several other uniqueness theorems that shed light on the
relation between a pseudodifferential operators and its matrix with respect to
a Gabor system.

10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
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The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics