Millimeter-Wave Small-Cell Backhaul Measurements and Considerations on Street-Level Deployment

In this paper a measurement campaign related to the 60 GHz small-cell backhaul channel in a residential area is described, and evaluations on its time dispersion and channel gain (normalized received power) are presented. They reveal that the channel is constituted by the direct path, the ground reflection and a few additional reflections with less power. Hence, in the first approximation, its behavior can be predicted by a simple two-ray model. It is used as basis for investigations on frequency selectivity and fading-induced power limitations as a function of distance, antenna height, system bandwidth and antenna gain. The illustrative results are helpful to understand the interdependence of these parameters and can be taken into account for system design and deployment.