Re: [Discuss-gnuradio] Please Help in trellis gnuradio

2011-06-05 Thread smith mark
Hi Thanks Achilleas, after doing this I got the desired result. One more question please What if I want to simulate a noisy channel? If my flow graph is like the one shown below: vector source>trellis encoder> channel noise>viterbi or any decoder--->sink Do I have to make any furt

Re: [Discuss-gnuradio] Please Help in trellis gnuradio

2011-06-04 Thread Achilleas Anastasopoulos
The output of the FSM belongs to the set {0,1,2,3}. The Viterbi decoder requires a vector of size 4 for each FSM symbol. So if the output of the FSM is [0,3,3,2,1,0] (6 symbols) then you need to provide the Viterbi decoder with a stream of  6 x 4 floats, each indicating the "distance" between the "