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Distributed Algorithms for Array Signal Processing

Chen, Po-Chih and Vaidyanathan, P. P. (2021) Distributed Algorithms for Array Signal Processing. IEEE Transactions on Signal Processing, 69 . pp. 4607-4622. ISSN 1053-587X. doi:10.1109/tsp.2021.3101015.

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Distributed or decentralized estimation of covariance, and distributed principal component analysis have been introduced and studied in the signal processing community in recent years, and applications in array processing have been indicated in some detail. Inspired by these, this paper provides a detailed development of several distributed algorithms for array processing. New distributed algorithms are proposed for DOA estimation methods like root-MUSIC, total least squares-ESPRIT, and FOCUSS. Other contributions include distributed design of the Capon beamformer from data, and distributed implementation of the spatial smoothing method for coherent sources. A distributed implementation of a recently proposed beamspace method called the convolutional beamspace (CBS) is also proposed. The proposed algorithms are fully distributed – an average consensus (AC) is used to avoid the need for a fusion center. The algorithms are based on a recently reported finite-time version of AC which converges to the exact solution in a finite number of iterations. Numerical examples are given throughout the paper to show the effectiveness of the proposed algorithms.

Item Type:Article
Related URLs:
URLURL TypeDescription
Chen, Po-Chih0000-0003-1637-9329
Vaidyanathan, P. P.0000-0003-3003-7042
Additional Information:© 2021 IEEE. Manuscript received February 17, 2021; revised June 7, 2021; accepted July 19, 2021. Date of publication August 2, 2021; date of current version August 20, 2021. The associate editor coordinating the review of this manuscript and approving it for publication was Dr. Alexander Bertrand. This work was supported by the Office of Naval Research under Grant N00014-21-1-2521, and the California Institute of Technology.
Funding AgencyGrant Number
Office of Naval Research (ONR)N00014-21-1-2521
Subject Keywords:Distributed or decentralized DOA estimation, Capon beamforming, convolutional beamspace, root-MUSIC, ESPRIT, FOCUSS, spatial smoothing
Record Number:CaltechAUTHORS:20210825-142202507
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Official Citation:P. -C. Chen and P. P. Vaidyanathan, "Distributed Algorithms for Array Signal Processing," in IEEE Transactions on Signal Processing, vol. 69, pp. 4607-4622, 2021, doi: 10.1109/TSP.2021.3101015
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:110410
Deposited By: Tony Diaz
Deposited On:25 Aug 2021 17:37
Last Modified:25 Aug 2021 17:37

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