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This paper present the results from a 28 GHz channel sounding campaignperformed to investigate the effects of outdoor to indoor penetration on thewireless propagation channel characteristics for an urban microcell in a fixedwireless access scenario. The measurements are performed with a real-timechannel sounder, which can measure path loss up to 169 dB, and equipped withphased array antennas that allows electrical beam steering for directionallyresolved measurements in dynamic environments. Thanks to the short measurementtime and the excellent phase stability of the system, we obtain bothdirectional and omnidirectional channel power delay profiles without any delayuncertainty. For outdoor and indoor receiver locations, we compare path loss,delay spreads and angular spreads obtained for two different types ofbuildings.

Outdoor to Indoor Penetration Loss at 28 GHz for Fixed Wireless Access