This is a receive diversity system(used to mitigate fading severity). It contains standard example of MRC(Maximal Ratio combining) 2x1 theoretical and practical BER performance and high snr theoretical approximation. Here, the BER performance of MRC 2x1 is compared with wireless 1x1 system over the same rayleigh channel environment to show that "how the addition of antenna at receiver helps to improve BER performance."Â