Reduction of Rain-Crosspolarization by its Dependence on Polarization Directions

Reduction of rain-induced crosspolarization is vital if system designers are to fully exploit frequency reuse. In this paper, a new method is developed for determining the expected crosspolarization level as a function of the polarization directions. It is also shown that we can reduce the crosspolarization by rotating the polarization angles between two fixed angles according to the wind directions.