1 research outputs found
Millimeter Wave Channel Measurements in a Railway Depot
Millimeter wave (mmWave) communication is a key enabling technology with the
potential to deliver high capacity, high peak data rate communications for
future railway services. Knowledge of the radio characteristics is of paramount
importance for the successful deployment of such systems. In this paper mmWave
channel measurements are reported for a railway environment using a wideband
channel sounder operating at 60GHz. Highly directional antennas are deployed at
both ends of the link. Data is reported for path loss, root mean square (RMS)
delay spread and K-factor. Static and mobile measurements are considered.
Analysis shows that the signal strength is strongly dependent (up to 25dB) on
the azimuth orientation of the directional transmit and receive antennas. A
path loss exponent of n=2.04 was extracted from the Line-of-Sight measurements
with optimally aligned antennas. RMS delay spreads ranged from 1ns to 22ns
depending on antenna alignment. 50% of the measured K-factors were found to be
less than 6dB. We conclude this is the result of ground reflections in the
vertical Tx-Rx plane