Short-Term Rain Attenuation Frequency Scaling for Satellite Up-Link Power Control Applications

In this paper, a novel stochastic dynamic model for the short-term frequency scaling of rain attenuation is presented. The model captures the dynamic characteristics of the instantaneous frequency scaling factor and provides the means to incorporate them in simultaneous rain attenuation time series generation, as well as in analytical calculations. Moreover, an analytical framework is proposed for rain attenuation prediction at a given frequency based on the rain attenuation measured at another frequency. The proposed model can be used for the timely activation of an open-loop up-link power control scheme in broadband satellite communication networks operating at frequencies above 10 GHz. It is applied to simulated rain attenuation data that have been obtained using the Synthetic Storm Technique on rain rate experimental data. Finally, it is shown how the new model improves the performance of an up-link power control scheme in terms of system availability.