Figure 3
From: Experimental evaluation of the WiMAX downlink physical layer in high-mobility scenarios
Base station downlink transmitter is placed outdoors. Located on the second floor of the CITIC building located in the Campus de Elviña at the University of A Coruña. Note that only one of the two vertically polarized antennas is used for 1×1 transmissions, while both cross polarized antennas are used for the 2×2 MIMO transmissions.