Analysis of the interference due to differential rain attenuation induced by an adjacent path on a multiple site diversity Earth-space system

The reliable design of a communication system requires the consideration of the interference effects which are of utmost importance for satellite communication systems. The type of dominant interference source examined concerns the interference caused by differential rain attenuation from an adjacent Earth-space system operating at the same frequency. In the present paper a method to predict the rain differential attenuation statistics valid for single site Earth-space systems, is extended here to include dual site diversity systems. The modified method is again based on a model of convective raincells as well as the lognormal model for the point rainfall rate statistics. Numerical results taken from the proposed procedure are presented and some very useful conclusions are deduced. >