Frequency diversity improvement factor for rain fade mitigation technique for 50–90 GHz in tropical region

Abstract

Microwave communication system in tropical region like South-East Asia, operating at higher frequency ranges, are attenuated due to the presence of particles in the atmosphere, like water vapor, water drops and the ice particles. The atmospheric gases and rain absorb and scatter the radio waves and consequently degrade the performance of the microwave link. Hence the rain fade must be taken in consideration for the Microwave link design to track the service of outage and quality. The aim of this is to develop and propose frequency diversity improvement factor prediction model for rain fade mitigation technique (FMT) from 50–90 GHz. Here the rain attenuation is predicted based on the ITU-R rain attenuation prediction model using measured rain rate in tropical region-South-East Asia. The predicted data are analyzed to develop and propose a prediction for the improvement factor. The proposed improvement factor model is investigated according to the fade margin where the frequency separation is set to 10 GHz.