Work

Joint Localization and Synchronization in Downlink Distributed MIMO

Year: 2025

Type: conference-paper

Abstract: We investigate joint localization and synchronization in the downlink of a distributed multiple-input-multiple-output (D-MIMO) system, aiming to estimate the position and phase offset of a single-antenna user equipment (UE) using downlink transmissions of multiple phase-synchronized, multi-antenna access points (APs). We propose two transmission protocols: sequential (P1) and simultaneous (P2) AP transmissions, together with the ML estimators that either leverage (coherent estimator) or disregard phase information (non-coherent estimator). Simulation results reveal that downlink D-MIMO holds significant potential for high-accuracy localization while showing that P2 provides superior localization performance and reduced transmission latency.

Source: European Signal Processing Conference (EUSIPCO)

DOI: 10.23919/eusipco63237.2025.11226252

Authors: Sauradeep Dey, Musa Furkan Keskin, Dario Tagliaferri, Gonzalo Seco-Granados, Henk Wymeersch

Institutions: Chalmers University of Technology, Politecnico di Milano, Universitat Autònoma de Barcelona

Language: English

Topic: Indoor and Outdoor Localization Technologies

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Vetenskapsrådet

Award: Localization and Sensing for Perceptive Cell-Free Networks Towards 6G