The output of the fsm encoder is a byte with possible values 0,1,2,3
representing a 2-bit symbol.
Is this what you have in mind when you connect it to the remaining
blocks?
self.connect(self,
self.bytes2chunks, self.symbol_mapper,
self.trellis_enc,
self.diffenc, self.chunks2symbols, self.rrc_filter,
self)
Achilleas