  In this paper, two large-scale fading path loss models are presented based on
indoor and outdoor channel measurements at 73 GHz. The line-of-sight
millimeter-wave propagation measurement campaigns were uniquely conducted
within the indoor and outdoor environments at an airport setting, i.e., the
Boise Airport. The channel measurements were made with directional transmit and
receive antennas with a 24 dBi gain at different receive antenna heights. From
the measured data, we obtained the parameters of two path loss models, i.e.,
the close-in reference distance model (CIM) and the floating-intercept model
(FIM). Results show that the path loss exponents estimated from the CIM are
very close to that of the free-space path loss model, while the FIM provides a
better fit to the measurement data.
