MmWave 6D Radio Localization with a Snapshot Observation from a Single BS
Artikel i vetenskaplig tidskrift, 2023

Accurate and ubiquitous localization is crucial for a variety of applications such as logistics, navigation, intelligent transport, monitoring, control, and also for the benefit of communications. Exploiting millimeter-wave (mmWave) signals in 5G and Beyond 5G systems can provide accurate localization with limited infrastructure. We consider the single base station (BS) localization problem and extend it to 3D position and 3D orientation estimation of an unsynchronized multi-antenna user equipment (UE), using downlink multiple-input multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) signals. Through a Fisher information analysis, we show that the problem is often identifiable, provided that there is at least one multipath component in addition to the line-of-sight (LoS), even if the position of corresponding incidence point (IP) is a priori unknown. Subsequently, we pose a maximum likelihood (ML) estimation problem, to jointly estimate the 3D position and 3D orientation of the UE as well as several nuisance parameters (the UE clock offset and the positions of IPs corresponding to the multipath). The ML problem is a high-dimensional nonconvex optimization problem over a product of Euclidean and non-Euclidean manifolds. To avoid complex exhaustive search procedures, we propose a geometric initial estimate of all parameters, which reduces the problem to a 1-dimensional search over a finite interval. Numerical results show the efficiency of the proposed ad-hoc estimation, whose gap to the Cramér-Rao bound (CRB) is tightened using the ML estimation.

Location awareness

Localization

Single anchor localization

Antenna arrays

Synchronization

Mapping

Three-dimensional displays

Maximum likelihood estimation

Millimeter wave communication

Orientation estimation

Synchronization

Estimation

Författare

Mohammad Ali Nazari

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

G. Seco-Granados

Universitat Autonoma de Barcelona (UAB)

Pontus Johannisson

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Henk Wymeersch

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

IEEE Transactions on Vehicular Technology

0018-9545 (ISSN) 1939-9359 (eISSN)

Vol. 72 7 8914-8928

Multidimensionell signalbehandling med frekvenskammar

Vetenskapsrådet (VR) (2018-03701), 2018-12-01 -- 2021-12-31.

A flagship for B5G/6G vision and intelligent fabric of technology enablers connecting human, physical, and digital worlds (Hexa-X )

Europeiska kommissionen (EU) (EC/2020/101015956), 2021-01-01 -- 2023-06-30.

Europeiska kommissionen (EU) (EC/HE/101120332), 2023-10-01 -- 2027-09-30.

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Kommunikationssystem

Reglerteknik

Signalbehandling

DOI

10.1109/TVT.2023.3246303

Mer information

Senast uppdaterat

2024-01-04