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2021•IEEE Communications LettersRequires access

Single-Site 3-D Positioning in Multipath Environments Using DOA-Delay Measurements

Junhui Liang, Jin He, Wenxian Yu, Trieu‐Kien Truong

Open publisher page 28 citations

Abstract

Localization of a source signal in the presence of multipath propagation is addressed in this letter. This problem is often encountered in environments such as urban areas and indoor corridors. A 3-D positioning algorithm is presented. It uses the azimuth direction-of-arrival (azimuth-DOA), elevation-DOA and time-of-arrival (TOA) data, measured by a base station (BS). By applying virtual station (VS) technique, the non-line-of-sight (NLOS) paths, caused by multipath reflection, are converted into line-of-sight (LOS) paths. After that, a two-step weighted least squares (WLS) 3-D positioning algorithm is derived. Performance analysis is conducted by comparing the algorithm’s mean-squared-error (MSE) and the optimal Cramér-Rao bound (CRB). Simulation results are finally provided to verify the mathematical analysis.

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What this paper is about

Localization of a source signal in the presence of multipath propagation is addressed in this letter. This problem is often encountered in environments such as urban areas and indoor corridors. A 3-D positioning algorithm is presented. It uses the azimuth direction-of-arrival (azimuth-DOA), elevation-DOA and time-of-arrival (TOA) data, measured by a base station (BS). By applying virtual station (VS) technique, the non-line-of-sight (NLOS) paths, caused by multipath reflection, are converted into line-of-sight (LOS) paths. After that, a two-step weighted least squares (WLS) 3-D positioning algorithm is derived. Performance analysis is conducted by comparing the algorithm’s mean-squared-error (MSE) and the optimal Cramér-Rao bound (CRB). Simulation results are finally provided to verify the mathematical analysis.

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OpenAlex reports 28 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Localization of a source signal in the presence of multipath propagation is addressed in this letter. This problem is often encountered in environments such as urban areas and indoor corridors. A 3-D positioning algorithm is presented. It uses the azimuth direction-of-arrival (azimuth-DOA), elevation-DOA and time-of-arrival (TOA) data, measured by a base station (BS). By applying virtual station (VS) technique, the non-line-of-sight (NLOS) paths, caused by multipath reflection, are converted into line-of-sight (LOS) paths. After that, a two-step weighted least squares (WLS) 3-D positioning algorithm is derived. Performance analysis is conducted by comparing the algorithm’s mean-squared-error (MSE) and the optimal Cramér-Rao bound (CRB). Simulation results are finally provided to verify the mathematical analysis.

Key concepts: Non-line-of-sight propagation, Multipath propagation, Azimuth, Computer science, Algorithm, Direction of arrival, Base station, Angle of arrival

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