Coherent multi-channel ranging for precise localization in narrowband LPWA networks: performance trials in an indoor environment

Vincent Berg (1) , Francois Dehmas (1) , Florian Wolf (1)

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

Wearable health monitoring is a promising application where Low Power Wide Area (LPWA) connectivity and location services are required. LPWA radios are suited thanks to their small size, low power and low cost, while providing ubiquitous and indoor coverage. However, current LPWA applications do not provide accurate enough localization information for this application. Coherent multi-channel ranging has recently been proposed to improve localization precision. This paper studies the resilience of the new approach in an indoor environment. Field trials performed in office premises confirm the potential of the new technique where performance is significantly better than legacy time-of-flight even in this severe environment.

Keywords: Narrowband localization LPWA frequency hopping indoor localization; Narrowband localization; LPWA; frequency hopping; indoor localization

Domains: Signal and Image processing

Vincent Berg, Francois Dehmas, Florian Wolf. Coherent multi-channel ranging for precise localization in narrowband LPWA networks: performance trials in an indoor environment. 2021 EuCNC/6G and Summit - Joint European Conference on Networks and Communications & 6G Summit, IEEE, Jun 2021, Porto, Portugal. pp.271-275, ⟨10.1109/EuCNC/6GSummit51104.2021.9482557⟩. ⟨cea-03908516⟩