7 papers
Enhancing 5G NTN VSAT RACH in GNSS-Denied environments
Francesco Menzione, Alejandro Gonzalez-Garrido, Flavien Ronteix-Jacquet +1
The 3GPP 5G non-terrestrial networks (NTN) technology fundamentally relies on a global navigation satellite system (GNSS) fix at the user equipment (UE) to pre-compensate for user-…
Beam scheduling policy for communications and PNT services from LEO satellites
Alejandro Gonzalez-Garrido, Francesco Menzione, Ottavio M. Picchi +1
Future low Earth orbit (LEO) constellations are expected to provide positioning, navigation, and timing (PNT) as a native service alongside broadband, removing the GNSS dependency…
5G Positioning Reference Signal impact assessment in Non-Terrestrial Networks communication service
Alejandro Gonzalez-Garrido, Ottavio M. Picchi, Francesco Menzione
5G New Radio (NR) Non-Terrestrial Networks (NTNs) extend cellular connectivity through Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) satellite constellations while enabling th…
When 5G NTN Meets GNSS: Tracking GNSS Signals under Overlaid 5G Waveforms
Idir Edjekouane, Alejandro González Garrido, Jorge Querol +1
Global Navigation Satellite Systems (GNSS) provide the backbone of Positioning, Navigation, and Timing (PNT) but remain vulnerable to interference. Low Earth Orbit (LEO) constellat…
Joint Communications, Sensing, and Positioning in 6G Multi-Functional Satellite Systems: Survey and Open Challenges
Chandan Kumar Sheemar, Jorge Querol, Wali Ullah Khan +7
Satellite systems are expected to be a cornerstone of sixth-generation (6G) networks, providing ubiquitous coverage and supporting a wide range of services across communications, s…
Interference analysis of Positioning Reference Signals in 5G NTN
Alejandro Gonzalez-Garrido, Jorge Querol, Henk Wymeersch +1
Accurate asset localization holds paramount importance across various industries, ranging from transportation management to search and rescue operations. In scenarios where traditi…
ML-based PBCH symbol detection and equalization for 5G Non-Terrestrial Networks
Inés Larráyoz-Arrigote, Marcele O. K. Mendonca, Alejandro Gonzalez-Garrido +6
This paper delves into the application of Machine Learning (ML) techniques in the realm of 5G Non-Terrestrial Networks (5G-NTN), particularly focusing on symbol detection and equal…