Abstract
LoRa technology operating in the 2.4 GHz Industrial, Scientific, and Medical (ISM) band presents an appealing solution for industrial and smart city deployments due to its global availability and compatibility. However, this frequency overlap raises concerns about cross-technology interference (CTI), particularly between LoRa transmissions and ubiquitous WiFi networks. This paper presents a comprehensive empirical study evaluating the interference effects between LoRa and WiFi under real-world conditions. Using off-the-shelf devices, we assess the impact of two WiFi modulations on LoRa packet delivery ratio across different LoRa settings. Our results reveal that while LoRa exhibits robustness against WiFi interference, certain configurations, especially high data rate modes, are vulnerable. Moreover, the results indicate that a LoRa packet can be successfully received if the WiFi received signal power is not higher than 25 dB than the LoRa one, on average. Finally, devoting more bits for error correction improves packet reception up to 23% in the conducted experiments.