LoRa, Zigbee and 5G Propagation and Transmission Performance in an Indoor Environment at 868 MHz. - Ricardo Robles-Enciso; Isabel Pilar Morales-Aragón; Alfredo Serna-Sabater; María-Teresa Martínez-Inglés; Antonio Mateo-Aroca; Jose Maria Molina Garcia Pardo; Leandro Juan-Llacer (Sensors, 2023)