hello bob this problem have been solved,now my fec&gmsk is worked but i got a new problem this is my fec+gmsk grc http://i.imgur.com/ZH2qhh6.png
and this is my gmsk without fec http://i.imgur.com/zJVskUX.png when i run these two grc,i got a similar value of ser i think that in the way of gmsk&fec,i will got a error rate value smaller than the single gmsk,but i did not got it, so i think there is somethin wrong in my grc,hope someone who can help me to check my grc ,or give me sone instruction about the using of fec. thank you --Ekko 2015-12-29 13:15 GMT+08:00 bob wole <bnw...@gmail.com>: > Ekko, > > Add a Tag debug block after your packet encoder and see if there are any > tags coming out of it. I think packet encoder is not passing your tag. If > that is the case, move your stream to tagged stream block after the packet > encoder just before the FEC extended tagged encoder. Hope it helps. > > > -- > Bob > > >> >> this is the address of picture >> >> http://imgur.com/2EQiY6O >> >> sorry to send two e-mails >> >> >> >> >
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