Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Data Multiplexing in Radio Interferometric Calibration   New and upcoming radio interferometers will produce unprecedented amounts of
data that demand extremely powerful computers for processing. This is a
limiting factor due to the large computational power and energy costs involved.
Such limitations restrict several key data processing steps in radio
interferometry. One such step is calibration where systematic errors in the
data are determined and corrected. Accurate calibration is an essential
component in reaching many scientific goals in radio astronomy and the use of
consensus optimization that exploits the continuity of systematic errors across
frequency significantly improves calibration accuracy. In order to reach full
consensus, data at all frequencies need to be calibrated simultaneously. In the
SKA regime, this can become intractable if the available compute agents do not
have the resources to process data from all frequency channels simultaneously.
In this paper, we propose a multiplexing scheme that is based on the
alternating direction method of multipliers (ADMM) with cyclic updates. With
this scheme, it is possible to simultaneously calibrate the full dataset using
far fewer compute agents than the number of frequencies at which data are
available. We give simulation results to show the feasibility of the proposed
multiplexing scheme in simultaneously calibrating a full dataset when a limited
number of compute agents are available.

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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
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The categories of this paper are: stat
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
2
The categories of this paper are: math
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org