Extension of the Misme and Fimbel model for the estimation of the cumulative distribution function of the differential rain attenuation between two converging terrestrial links

A distribution-free model is presented for the cumulative distribution function of the differential rain attenuation between two co-channel converging terrestrial links operating at frequencies above 10 GHz. This is accomplished through an extension of the Misme and Fimbel model, which determines the cumulative distribution of the rain attenuation on an isolated link from its parameters and data for the radio climatic region, as well as concepts from probability theory. Next, model predictions and experimental results are compared and effects from variations of the angle between the links and of the path length are studied. Finally, rain effects on the cumulative distribution of the C/I ratio between the desired and interference powers at the same receiver are analyzed, considering the angular discrimination of the receiving antenna.

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