Introduction - If you have any usage issues, please Google them yourself
a Matlab code that produces a plot of probability of bit error rate for QPSK versus SNR for three receive antennas, and three different combining methods: MRC, equal gain combining, and selection combining. The plot is generated by using Monte Carlo simulation. The SNR in this plot is the single-antenna average signal-to-noise ratio, and range from -5 dB to 15 dB.