DefinePK

Abstract

In tropical regions, rain is the dominant source of attenuation at higher frequency bands in Satellite Links. Rain degrades the system performance with increased Path Loss. Knowledge of rain fade performance is essential in order to optimize system capacity, quality and reliability. The rain intensity data is derived from140 years measured annual rainfall data worldwide. The converted rain intensity data is used to estimate rain fades at C, X and Ku-bands using ITU-R recommendations. Noise generated, carrier-to-noise ratios during rains are estimated and compared for all the mentioned three bands. This paper presents the effects of satellite to earth link on the performance of receiving system due to rain fades operating in tropical country like India. Currently in India C and Ku-band frequencies are being used for commercial satellite communications.