The Effect of Temperature and Humidity on Indoor LoRa Propagation Model

LoRa (Long Range) networks tend to be a prevailing technology for smart buildings applications. Its Chirp Spread Spectrum (CSS) modulation technique allows for higher receiver sensitivity. However, its unstable behaviour in terms of electromagnetic propagation motivated this paper to assess the influence of these parameters under temperature and humidity variations on the reliability of LoRa connectivity. The current work suggests a method that takes into consideration the indoor fluctuation of temperature and humidity. The current method is based on the Multi-Wall propagation Model (MWM) aiming at path loss calculation. Simulation results were verified with real- life measurements carried out in a Neapolis University Pafos (NUP) building. The simulation results are in good agreement with the measured data. Nevertheless, the study revealed that the environmental factors of temperature and humidity have a smooth effect on indoor path loss calculation.