A simulation tool to interpret error rates in LoRa systems under frequency-sweeping jamming

In a recent experimental study, we submitted a LoRa system to jamming attacks, consisting of frequency-sweeping intentional electromagnetic interference. In the present contribution, we reproduce this scenario in a computational environment aiming to explain the previously observed phenomena based on the LoRa symbol extraction process. Simulation results confirm that the susceptibility of LoRa systems is influenced by the interference sweep time. A good agreement between simulation and experiments was observed for sweep times between 5 and 20 μs.