Can I define BER(Bit Error Rate) by using Q function as Q[(x-μ)/σ] ? Here x is a random variable, μ is mean and σ is standard deviation. I was solving a question on Bit error rate and I encountered this expression. Any help will be highly appreciated. I know it is not circuits but I need some help.
I solved it as follows: Q((X-0)/1) as mean is zero and the variance is 1 for the first case. So as we can approximate the Q function I used the integration to find value of a( 6.0697). In the second case mean is 0.3*X so the Q function becomes Q(0.7X) and I again used integration to find the BER to be 1.2*10^-4.