Effects of vehicle vibrations on mm-wave channel: Doppler spread and correlative channel sounding

Performance of Generalized Spatial Modulation MIMO Over Measured 60GHz Indoor Channels

“…The MIMO channel is measured by changing the positions of the TX and RX antennas on xy-tables. The channel sounder operates based on the frequency domain measurement principle illustrated in [26], [27] (as opposed to the time-domain principle presented for the mmWave band in [28]). In the frequencydomain method, a narrow-band continuous wave signal is used to sound the channel and the signal is swept from 55 to 65 GHz with a step size of 10 MHz.…”

Millimetre wave band time domain channel sounder

“…Thus, we do not tend to present results of the real‐world channel sounding campaigns, as we have done this, e.g. in [8], [9] or [10]. All results presented in this study are only back‐to‐back tests.…”

Time-varying K factor of the mm-Wave vehicular channel: Velocity, vibrations and the road quality influence

“…The amplitude of the vibrations could be in the order of millimeters [11] and it is therefore comparable with the aptly called mmWave wavelength. The effect of antenna vibrations is studied in [12], [13], where number of possible vibration sources is listed. Mainly, the vibrations are caused by an uneven road surface, engine speed (in revolutions per minute) or sound system of the vehicle.…”

“…Mainly, the vibrations are caused by an uneven road surface, engine speed (in revolutions per minute) or sound system of the vehicle. In [12], [13], the vibrations are related to a Doppler spread of the sounding signal.…”

“…In this contribution, we utilize the datasets introduced in [12] and we evaluate the in-vehicle line-of-sight (LOS) link vibrations influence via the variations of the K factor.…”