Adjacent Channel WiFi 5 Interference on DSRC Communication at 5.9GHz

Since their controversial decision to adjust the spectrum allocation for intelligent transportation systems in November 2020, the FCC has implemented a wide range of changes. These changes include the removal of 45 MHz from existing spectrum allocations and the transition from DSRC to CV2X, both of which need to be studied in greater detail. We aimed to explore the effects of these decisions by examining the potential impacts on commercial-grade V2X hardware in a real-world, complex radio environment. This was done by characterizing DSRC and comparing its performance in a complex radio environment with different types of interference present. The results of these experiments indicate that outdoor adjacent band WiFi networks can impact DSRC operations; however, this impact is unlikely to have a measurable effect on current ITS installations.