**4.2.1 Defining parameters**

clear N= 256; P = 256/8; S=N-P; GI= N/4; M=2; pilotlnterval = 8; L = 16; nlteration = 500; SNR\_ V = [0:1:34]; ber = zeros(l,length(SNR\_ V)); Ip = [l:pilotlnterval:N]; Is= setxor(l :N,Ip); Ep =2;
