Similarity of wireless multiband propagation in urban vehicular-to-infrastructure scenarios

Cooperative connected automated mobility depends
on sensing and wireless communication functions. With in-
creasing carrier frequency both functions can be realized with
the same hardware, however, the attenuation of radio signals
increases quadratically with the carrier frequency. Hence, link
setup becomes challenging in vehicular scenarios due to the
required beam finding process. In this paper we investigate the
multipath components of the vehicle-to-infrastructure (V2I) radio
channel in three frequency bands with center frequencies of
3.2 GHz, 34.3 GHz and 62.35 GHz using measurement data with
155.5 MHz bandwidth and a sounding repetition rate of 31.25 µs.
The channel impulse responses are collected simultaneously at
all three carrier frequencies. Using the high temporal sampling
rate we apply the CLEAN algorithm, enabling the estimation of
the weight, delay and Doppler frequency of multipath compo-
nents. By analyzing the collinearity of the Doppler normalized
scattering function between the frequency bands we found that
the collinearity between the 3.2 GHz and 34.3 GHz band as well
as between the 3.2 GHz and 62.35 GHz is smaller in the non-line
of sight (NLOS) region but increases for the line-of-sight (LOS).