def receiver_with_blr(y, H, cons):
beta = int(log2(len(cons)))
# creation de w
reel = [pow(2, i) for i in range(beta // 2 - 1, -1, -1)]
im = [1j * pow(2, i) for i in range(beta // 2 - 1, -1, -1)]
w = concatenate((reel, im), axis=None)
A = bit_lvl_repr(H, w)
mes = array(mimo_ml(y, A, [-1, 1]))
mes[mes == -1] = 0
return mes
def receiver_with_blr(y, H, cons, noise_var):
# Create w
beta = int(log2(len(cons)))
reel = [pow(2, i) for i in range(beta // 2 - 1, -1, -1)]
im = [1j * pow(2, i) for i in range(beta // 2 - 1, -1, -1)]
w = concatenate((reel, im), axis=None)
# Compute bit level representation
A = bit_lvl_repr(H, w)
mes = array(mimo_ml(y, A, [-1, 1]))
mes[mes == -1] = 0
return mes
def receiver_without_blr(y, H, cons, noise_var):
return qam.demodulate(mimo_ml(y, H, cons), 'hard')