  In this paper we present measurement results for pure line-of-sight MIMO
links operating in the millimeter wave range. We show that the estimated
condition numbers and capacities of the measured channels are in good agreement
with the theory for various transmission distances and antenna setups.
Furthermore, the results show that orthogonal channel vectors can be observed
if the spacing criterion is fulfilled, thus facilitating spatial multiplexing
and achieving high spectral efficiencies even over fairly long distances.
Spacings generating ill-conditioned channel matrices show on the other hand
significantly reduced performance.
