Millimeter‐Wave Outdoor‐to‐Indoor Channel Measurements at 3, 10, 17 and 60 GHz

International audience<p>Millimeter-Wave (mmW) communicationsystems, capable of achieving high data rates thanks to thelarge bandwidth available in this frequency range, are apromising 5G technology. Studies in this paper investigatethe radio propagation channel at 3, 17 and 60 GHz in anOutdoor environment. Measurements were conducted using a wideband channel sounder to derive channel delay spread (DS). Results do not indicate a clear trend on the behavior of the DS with regards to the frequency. This disagrees in some way with the 3GPP TR 38.900 channel model findings which support a clear decreasing trend of this parameter as the frequency increases. At 60 GHz, the channel DS was computed with and without compensation of atmospheric oxygen absorption. It was found that this phenomenon has minor impact on the measurement results. Its compensation does not change the main conclusions.