ot following a certain model over a wide range of frequencies. It was observed that the rate at which the path loss increased with frequency was not linear, as the rate is higher in the lower parts of the spectrum, which can be possi- bly explained as due to diffraction effect that is frequency-dependent and a more dominat- ing component in lower frequencies. However, in higher frequencies, reflections and scattering are relatively the predominant components. From preliminary ray-tracing studies, the channel spreads in terms of delay and angle appear to be weakly dependent on the fre- quency and are generally 2-5 times smaller than the values reported in [7]. The cross-polar scattering in the ray-tracing results tends to increase with increasing frequency due to dif- fuse scattering. In InH deployment scenarios, under LoS conditions, multiple reflections from walls, floor, and ceiling could give rise to wave-guiding effect. The measurements conducted in office scenarios suggest that path loss exponent, based on a 1 m free-space reference distance is typically below 2, leading to relatively less path loss than predicted by the free-space path loss formula. The strength of the wave-guiding effect is variable and the path loss exponent appears to increase slightly with increasing frequency, possibly due to the relation between the wavelength and surface roughness. Measurements of the small-scale channel properties such as angular spread (AS) and delay spread have shown similarities between channels over a very wide frequency range, where the results suggest that the main multipath compo- nents are present at all frequencies with some small variations in magnitudes. Recent studies have shown that polarization discrimination ranges between 15 and 25 dB for indoor mmWave channels with greater polarization discrimination at 73 GHz than at 28 GHz [1-3]. Cross-polarized signal components are generated by reflection and diffraction. It is widely known that the fading correlation characteristic between orthogonally polarize