Comment changes

sw/utility/simulations.py

@@ -53,10 +53,13 @@ def test_decoder(x: np.array,
                       leave=False,
                       bar_format="{l_bar}{bar}| {n_fmt}/{total_fmt}"):
 
+            # Simulate channel
             y = noise.add_awgn(x_bpsk, SNR, signal_amp=np.sqrt(2))
 
+            # Decode received frame
             x_hat = decoder.decode(y)
 
+            # Calculate statistics
             total_bit_errors += count_bit_errors(x, x_hat)
             total_bits += x.size
             total_frame_errors += 1 if total_bit_errors > 0 else 0