Rain attenuation prediction for satellite communications link at Ku and Ka bands Over Bangladesh

Abstract

The growing demand of microwave communication systems has overcrowded the frequency band below 10 GHz, thus system designers and RF engineers are forced to shift to higher bands of frequencies. However, signal power degradation at higher frequencies such as Ku and Ka bands is prominent and it is mainly due to rain. This leads to frequent service interruption and hence it is essential to predict the attenuation in an efficient manner. In this work, we have analyzed and predicted the attenuation in Ka and Ku bands from the 60 years of collected rainfall data of eight major zones of Bangladesh. Predicted attenuation is compared with International Telecommunications Union (ITU) recommended attenuation based on rain intensity. This work provides attenuation variation characteristics in the aforesaid bands and rain attenuation prediction in key parts of Bangladesh.