1. The problem statement, all variables and given/known data Using the normal distribution for different modulation techniques over rayleigh fading , we have to derive SNR values for different Diversity techniques such as selection combining, Equal Gain Combining and Maximal Ratio Combining. Now for Non-coherent BPSK I have to derive the Bit Error Rate for different diversity techniques. I have the Probability of the Bit Error Rate - i need to find how I can find the Bit Error Rate from this. Apparently it involves a sum of another term and then a double integral that would give us the BER. Can someone point me in the right direction in finding this so called sum and what I have to integrate it with? What would I be integrating the second term by for the double integral, as It can't be Signal To Noise Ration (SNR) of the signal. 2. Relevant equations The Probability of a Bit Error Rate was found in terms of SNR (gamma). 3. The attempt at a solution Too much to type up here.