Here's an image of the flowgraph, in addition: http://i.imgur.com/45B2MyL.png
Michael On 1/30/16, Michael Sabino <michael.r.sab...@gmail.com> wrote: > I abandoned the FSM constructor and decided to just use the decode > CCSDS27 block. > > > Michael > > On 1/30/16, Achilleas Anastasopoulos <anas...@umich.edu> wrote: >> Michael, >> >> I haven't seen your flowgraph, but as I wrote in my previous email you >> are >> using the fsm constructor probably in the wrong way: >> >> You are confusing the (n,k,K) parameters of a CC. >> k = number of input bits per period >> n = number of output bits per period >> K = constraint length of the code (related to the memory it requires) >> >> If you want to build a (2,1,*) CC then you need to call the fsm >> constructor >> with these two numbers AND a vector of 2x1=2 integers representing the >> two >> generator polynomials. >> (If you think about it the constraint length parameter need not be input >> to >> the constructor because it can be derived from the generator polynomials) >> >> >> >> *fsm::fsm(int k, int n, const std::vector<int> &G)* >> >> so in the above example it should be something like >> >> >> *fsm(1,2, * >> >> >> *[79,109])* >> >> On the other hand, i don't know if this is what you want to do. >> >> If you tell us the exact parameters of the code you want to build I >> would be able to help more. >> (the rate of the code 1/2 that you gave in your previous email is not >> sufficient, because R=1/2=2/4 so a (4,2,*) >> CC will also have the same rate but it would require you to provide 4 >> x 2 =8 generator polynomials to construct it). >> >> >> Achilleas >> > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
