  This paper presents a 3-dimensional millimeter-wave statistical channel
impulse response model from 28 GHz and 73 GHz ultrawideband propagation
measurements. An accurate 3GPP-like channel model that supports arbitrary
carrier frequency, RF bandwidth, and antenna beamwidth (for both
omnidirectional and arbitrary directional antennas), is provided. Time cluster
and spatial lobe model parameters are extracted from empirical distributions
from field measurements. A step-by-step modeling procedure for generating
channel coefficients is shown to agree with statistics from the field
measurements, thus confirming that the statistical channel model faithfully
recreates spatial and temporal channel impulse responses for use in
millimeter-wave 5G air interface designs.
