5G-NR Over Transparent Payload GEO Satellites: A Hands-On Approach Using OpenAirInterface5G-NTN. - Sumit Kumar 001; Jevgenij Krivochiza; Turker Yilmaz; Jorge Querol; Symeon Chatzinotas; Stefano Andrenacci; Joel Grotz (IEEE Open J. Commun. Soc., 2025)