Investigation the Performance of RF Satellite Link Model Using 32 QAM

In this paper, analysis and enquiry of the performance of the satellite system for the x band using 32 QAM digital modulation technique.This category of digital modulation technique is used in many practical applications, including current wireless technologies as well as offering high data rate transmission without increasing the bandwidth compared with other digital modulation techniques.Satellite communication system model is modelled using Matlab Simulink. The achieved results of the simulation such as power spectra, constellation diagrams, the relation between bit error rate (BER) against the amplifier, losses and signal to noise ratio (SNR) are discussed.This paper describes some results by using tests performed on the x-band satellite communication system model at 4 GHz, 8 GHz, and 12 GHz bands to investigate the effect of gain, attenuation and SNR on the BER.