The effect of antenna orientation and polarization on MIMO capacity

The capacity of a multiple-input multiple-output (MIMO) system depends on the channel matrix as well as the signal-to-noise ratio. The effect of the antenna orientation is analyzed for both single polarized and dual polarized antennas using a planar channel model. The results show that although linear polarized TX and RX antennas provide higher capacity when they are polarization matched, dual polarized antennas provide better performance when an arbitrary orientation is considered.