Millimeter wave spread in delay and azimuth for small cell propagation channel at 60 GHz

The millimeter wave channel at 60 GHz for line-of-sight small cell scenarios was examined through analysis of the measured data using a wideband channel sounder. Full polarimetric directional data obtained at 3 different locations for which the emulation of small cell base-station (transmitter) antenna is at the height of 5 m from the ground floor, where the user-equipment (receiver) is located at 10 locations with different distances between 5 m to 50 m from the base-station. The base-station antenna is as wide to illumitate the small cell whereas at the user-equipment side a 5° beamwidth narrowbeam antenna is used to obtain the directional channel impulse response with high resolution in azimuth-of-arrival and delay. The analysis of the measured data confirms the dominance of the line-of-sight component with small root-mean-squared (RMS) values for delay. Few dominant scatterers can be observed at each environment which increase the delay and angular spread values.