Simulation of Diversity Techniques for Satellite Communications

摘要

Diversity techniques are used to provide effective and establish efficient communication link between earth station terminals and satellites. Main two techniques of diversity are orbital and site diversity schemes. Currently both diversity schemes are modelled using parameters such as Time Division Multiplexer (TDM) and Frequency Division Multiplexer (FDM) in order to avoid signal interference. TDM is a technique for different signals to be transmitted in various intervals of time. FDM is a technique where more than one signals is to be transmitted using various different frequency channels which get affected by frequency-selective fading. This paper gives the illustration of rain fades and its effects in satellite communications, as well as it presents relevant techniques to void the affect of rain fades that have been implemented using various simulation tools such as Matlab, OPNET and Celplanner. The simulation gives the effect of the fading factors for a satellite communication, where this prediction will be useful for a supplier to inform customers.