Speaker: Dr. Musa Furkan Keskin
DEIB - Seminar Room "N. Schiavoni" (Bld. 20)
May 21st, 2024 | 10.30 am
Contacts: Proff. Monica Nicoli, Mattia Brambilla
Abstract
On May 21st, 2024 at 10.30 am the seminar "V2X Sidelink Positioning in FR1" will take place at DEIB Seminar Room "Nicola Schiavoni" (Building 20).In this talk, we investigate sub-6 GHz V2X sidelink positioning scenarios in 5G vehicular networks through a comprehensive end-to-end methodology encompassing ray-tracing-based channel modeling, novel theoretical performance bounds, high-resolution channel parameter estimation and geometric positioning using a round-trip-time (RTT) protocol. We first present a novel, approximate Cramer-Rao bound (CRB) on the connected road user (CRU) position, explicitly taking into account multipath interference and path merging. Capitalizing on tensor decomposition and ESPRIT methods, we propose high-resolution channel parameter estimation algorithms specifically tailored to dense multipath V2X sidelink environments, designed to detect multipath components (MPCs) and extract line-of-sight (LoS) parameters. Finally, using realistic ray-tracing data, we evaluate channel estimation and positioning performance in sub-6 GHz V2X with the proposed algorithms.