stc/exp/ml_stc_linux_make_v1.0/matlab/STC matlab implementation/example2.m

   1 clc; clear;
   2
   3 % either use optimized matrix H_hat
   4 load('dv_best_submatrices.mat');
   5 H_hat = double(submatrices{3,7}); % constraint length 7 and width 3.
   6 % Not all combinations are known.
   7
   8 H = create_pcm_from_submatrix(H_hat, 50);
   9 draw_pcm(H);
  10
  11 % code = structure with all necesary components
  12 code = create_code_from_submatrix(H_hat, 50);
  13 w = ones(code.n,1);
  14 x = double(rand(code.n,1)<0.5);
  15 m = double(rand(sum(code.shift),1)<0.5);
  16
  17 [y min_cost] = dual_viterbi(code, x, w, m);
  18
  19 if (all(m'==calc_syndrome(code,y)'))
  20     fprintf('Message extracted without any error.\n');
  21 else
  22     fprintf('ERROR\n');
  23 end
  24
  25 min_cost