Angular-Resolved Measurements of Building Entry-Loss for Energy-Efficient Building at 28 GHz

This paper presents angular-resolved outdoor-to-indoor measurements on an energy-efficient building with open-plan offices at 28 GHz. The impact of floor level and distance from wall on path loss and angular spread for different indoor traces are presented. Angular spread was shown to have similar behavior on all floors except the floor at the same height as the transmitter. Angular spread does not change for measurement traces parallel to (at constant distance from) the wall but increases with increasing distance from the wall.