Efficient Wideband DOA Estimation Through Function Evaluation Techniques

Please use this identifier to cite or link to this item: http://hdl.handle.net/10045/75188
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Title: Efficient Wideband DOA Estimation Through Function Evaluation Techniques
Authors: Selva, Jesus
Research Group/s: Señales, Sistemas y Telecomunicación
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal
Keywords: Wideband DOA estimation | Maximum likelihood estimation | Chebyshev interpolation | Newton-type method
Knowledge Area: Teoría de la Señal y Comunicaciones
Issue Date: 6-Apr-2018
Publisher: IEEE
Citation: IEEE Transactions on Signal Processing. 2018, 66(12): 3112-3123. doi:10.1109/TSP.2018.2824256
Abstract: This paper presents an efficient evaluation method for the functions involved in the computation of direction-of-arrival (DOA) estimators. The method is a combination of the Chebyshev and barycentric interpolators, and makes use of the Discrete Cosine Transform (DCT). We present two applications of this method. The first is for reducing the complexity of the line searches in three wideband DOA estimators: Incoherent Multiple Signal Classification (IC-MUSIC), Test of Orthogonality of Projected Subspaces (TOPS), and Deterministic Maximum Likelihood (DML). And the second application is a procedure to compress the wideband DML cost function, so that it is formed by just a few summands. This compression entails a reduction in complexity by a large factor. The evaluation method and its applications are numerically assessed in several numerical examples.
URI: http://hdl.handle.net/10045/75188
ISSN: 1053-587X (Print) | 1941-0476 (Online)
DOI: 10.1109/TSP.2018.2824256
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 IEEE
Peer Review: si
Publisher version: https://doi.org/10.1109/TSP.2018.2824256
Appears in Collections:INV - SST - Artículos de Revistas

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