Hello
Thank you Damian for your reply. I deleted the unnecessary connection and I got my exit
I calculate my error rate in matlab as I generate my data there. But unfortunately, I get a very high rate (greater than 0.50). But when I connect directly the two matlab components (by removing the diodes, fiber and photodiode), I find 0 as error rates what is good because i don’t introduce any noise. How can I reduce my error rates or what explains this high rate? Thank you for your help