Modeling LoRa Backscatter Communication Range

The enhancement of IoT applications for low-power and long-range communication requires developing communication techniques that consume a small amount of power while transmitting at longer distances. LoRa backscatter is a promising solution for such applications. In this work, we will develop a model that helps to estimate the communication range between a LoRa backscatter tag and a receiver. The developed model has been tested by simulation using Python, and the results are validated by comparing the achieved range using our model with state-of-art LoRa backscatter works. We have also extended the model to account for the effect of SNR loss due to direct interference from the transmitter and inter-tag interference from neighbouring tags in concurrent LoRa backscatter systems.