An example of measured impulse responses in the 5-6 GHz band. This example is non-line-of-sight, with terminal separation of about 6.8 meters the terminals were located at different floors of the same building. The figure shows passband impulse responses measured over a one-meter rail with receiver positions separated by 2 mm. The vertical axis represents positions along the rail, and the receiver was located closer to the transmitter at the top part of the picture than at its bottom. The carrier frequency (5.5 GHz in this case) was not removed in order to not lose the angle of arrival information, so the impulse response is real and shows a strong 5.5 GHz oscillation.