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dc.contributor.authorChen, Hui
dc.contributor.authorBallal, Tarig
dc.contributor.authorAl-Naffouri, Tareq Y.
dc.date.accessioned2021-08-05T12:18:25Z
dc.date.available2021-02-17T08:56:38Z
dc.date.available2021-08-05T12:18:25Z
dc.date.issued2021
dc.identifier.citationChen, H., Ballal, T., & Al-Naffouri, T. Y. (2021). DOA Estimation with Non-Uniform Linear Arrays: A Phase-Difference Projection Approach. IEEE Wireless Communications Letters, 1–1. doi:10.1109/lwc.2021.3102402
dc.identifier.issn2162-2345
dc.identifier.doi10.1109/LWC.2021.3102402
dc.identifier.urihttp://hdl.handle.net/10754/667494
dc.description.abstractPhase wrapping is a major problem in direction-of-arrival (DOA) estimation using phase-difference observations. For an antenna pair with an inter-antenna spacing greater than half of the wavelength (λ/2) of the signal, phase wrapping occurs at certain DOA angles leading to phase-difference ambiguities. Existing phase unwrapping methods exploit either frequency or spatial diversity. These techniques work by imposing restrictions on the utilized frequencies or the receiver array geometry. In addition to these restrictions, sensitivity to noise and calibration errors is another limitation of these methods. We propose a grid-less phase-difference projection (PDP) DOA algorithm to overcome these issues. The concept of wrapped phased-difference pattern (WPDP) is introduced, which allows us to compute most of the parameters required for DOA estimation in an offline manner. This results in a superior computational speed in real-time compared to methods with similar DOA estimation performance. Simulation results demonstrate the excellent performance of the proposed algorithm, both in terms of accuracy and speed.
dc.publisherIEEE
dc.relation.urlhttps://ieeexplore.ieee.org/document/9506874/
dc.relation.urlhttps://ieeexplore.ieee.org/document/9506874/
dc.relation.urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9506874
dc.rights(c) 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectDirection of arrival
dc.subjectDOA
dc.subjectphase-difference
dc.subjectphase wrapping
dc.subjectnon-uniform linear arrays
dc.subjectCRLB.
dc.titleDOA Estimation with Non-Uniform Linear Arrays: A Phase-Difference Projection Approach
dc.typeArticle
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalIEEE Wireless Communications Letters
dc.eprint.versionPost-print
dc.identifier.pages1-1
dc.identifier.arxivid2102.03650
kaust.personChen, Hui
kaust.personBallal, Tarig
kaust.personAl-Naffouri, Tareq Y.
refterms.dateFOA2021-02-17T08:57:19Z


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