I am new to GNU Radio.
I need some reference to how to use FEC block in GNURadio.
When I try to make encoder and decoder without modulation, its work as well, but when I using modulation and add some noise, there is a problem.
Received bit are not same with transmitted bit and make a decoder not working as well. Say I have k=40 bit and encoded c=64 bit ready to transmit, but I receive extra bit c=96 bit, so decoder can't recognize and decode all c received data as zeros. Find pictures of my simulation system below.