Hello!I want to introduce a non-recursive and nonsistematic code first, then i want a systematic and nonrecursive code.what should i modify in this : kafes=poly2trellis(3,[5 7]);
I want to implement Systematic encoder like kafes = poly2trellis(3,[7 5], 7). For that your code has to changed. And I changed it accordingly. But the performance is poor. Can you please help me?
Dear Bahadir Gedikbey it is a good method but i think it has some mistake, The formula used to compute "gama" in your code is
gama11(k)=exp((-(r(i)-x111)^2-(r(i+1)-x112)^2)/2/sigma);
gama12(k)=exp((-(r(i)-x121)^2-(r(i+1)-x122)^2)/2/sigma);
gama23(k)=exp((-(r(i)-x231)^2-(r(i+1)-x232)^2)/2/sigma);
gama24(k)=exp((-(r(i)-x241)^2-(r(i+1)-x242)^2)/2/sigma);
gama31(k)=exp((-(r(i)-x311)^2-(r(i+1)-x312)^2)/2/sigma);
gama32(k)=exp((-(r(i)-x321)^2-(r(i+1)-x322)^2)/2/sigma);
gama43(k)=exp((-(r(i)-x431)^2-(r(i+1)-x432)^2)/2/sigma);
gama44(k)=exp((-(r(i)-x441)^2-(r(i+1)-x442)^2)/2/sigma);
but i think it should be like
gama11(k)=exp((-(r(i)-x111)^2-(r(i+1)-x112)^2)/(2*sigma)); %see moons book page 595 equation or eq 14.21
gama12(k)=exp((-(r(i)-x121)^2-(r(i+1)-x122)^2)/(2*sigma));
gama23(k)=exp((-(r(i)-x231)^2-(r(i+1)-x232)^2)/(2*sigma));
gama24(k)=exp((-(r(i)-x241)^2-(r(i+1)-x242)^2)/(2*sigma));
gama31(k)=exp((-(r(i)-x311)^2-(r(i+1)-x312)^2)/(2*sigma));
gama32(k)=exp((-(r(i)-x321)^2-(r(i+1)-x322)^2)/(2*sigma));
gama43(k)=exp((-(r(i)-x431)^2-(r(i+1)-x432)^2)/(2*sigma));
gama44(k)=exp((-(r(i)-x441)^2-(r(i+1)-x442)^2)/(2*sigma));
the sigma should be divided instead of multiplied
Thanks and to check it
hammaddilpazir@yahoo.com
