Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Simple AoA Estimation Scheme   We propose an intuitive, simple and hardware friendly, yet surprisingly novel
and efficient, received signal's angle of arrival (AoA) estimation scheme. Our
intuitive, two-phases cross-correlation based scheme relies on a switched beam
antenna array, which is used to collect an omni-directional signal using few
elements of the antenna array in the first phase. In the second phase, the
scheme switches the main beam of the antenna array to scan the angular region
of interest. The collected signal from each beam (direction or angle) is cross
correlated with the omni-directional signal. The cross-correlation coefficient
will be the highest at the correct AoA and relatively negligible elsewhere. The
proposed scheme simplicity stems from its low computational complexity (only
cross-correlation and comparison operations are required) and its independence
of the transmitted signal structure (does not require information about the
transmitted signal). The proposed scheme requires a receiver with switched beam
antenna array, which can be attached to a single radio frequency chain through
phase shifters, hence, its hardware friendliness. The high efficiency of our
system can be observed by comparing its performance with the literature's best
performing MUSIC algorithm. The comparison demonstrates that our scheme
outperforms the MUSIC algorithm, specially at low SNR levels. Moreover, the
number of sources that can be detected using our scheme is bound by the number
of switched beams, rather than the number of antenna elements in the case of
the MUSIC algorithm.

30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
0
The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
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The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con