Benchmarking of Narrowband LPWA Physical Layer Ranging Technologies

Florian Wolf (1, 2) , Kévin Le Déroff (1) , Sébastien de Rivaz (1) , Nicolas Deparis (1) , Francois Dehmas (1) , Jean-Pierre Cances (2)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 UNILIM - Université de Limoges

Accurate radio signal based geolocalization for Low Power Wide Area networks is a key-enabler to various Internet of Things applications. However, localization with narrowband signals remains challenging in multipath environments. Sequential coherent multi-channel ranging improves temporal resolution while being compatible with narrowband transmissions. New radio chipsets integrate proprietary ranging functions. This paper compares a proof-of-concept implementation for coherent multi-channel ranging with narrowband signals to the Time-of-Flight ranging function of the LoRa 2.4GHz radio chip. Benchmarking results for different configurations and propagation scenarios are discussed, illustrating the precision scalability of multi-channel ranging.

Mots clés: Multi-channel; frequency hopping; LoRa 2.4 GHz SX1280; LPWA network localization; range estimation

Domaines: Traitement du signal et de l'image [eess.SP]; Electromagnétisme

Florian Wolf, Kévin Le Déroff, Sébastien de Rivaz, Nicolas Deparis, Francois Dehmas, et al.. Benchmarking of Narrowband LPWA Physical Layer Ranging Technologies. 2019 16th Workshop on Positioning, Navigation and Communications (WPNC), Oct 2019, Bremen, Germany. ⟨hal-02350545⟩