Measuring Radar And Communication Congruence At Millimeter Wave Frequencies

Millimeter wave (mmWave) communication enables high-rate vehicle-to-infrastructure (V2I) communications by using larger bandwidths, but configuring mmWave links requires significant training overhead. This overhead can be greatly reduced by using either prior knowledge of the channel or information about the target's location. In this paper, we conduct a measurement based study of vehicle positioning accuracy using roadside unit (RSU) mounted mmWave radar and GPS. Additionally, we analyze the spatial congruence between the communication and radar power spectra from the results of a measurement campaign. Finally, we compare the performance of radar-assisted and GPS-assisted beam-selection.