/span>
0025 
0026 llr_out = zeros(4, size(sym_in, 2));
0027 
0028 idx_1 = (abs(sym_in) &gt; 14);
0029 idx_2 = (abs(sym_in) &lt;= 14) &amp; (abs(sym_in) &gt; 12);
0030 idx_3 = (abs(sym_in) &lt;= 12) &amp; (abs(sym_in) &gt; 10);
0031 idx_4 = (abs(sym_in) &lt;= 10) &amp; (abs(sym_in) &gt; 8);
0032 idx_5 = (abs(sym_in) &lt;= 8) &amp; (abs(sym_in) &gt; 6);
0033 idx_6 = (abs(sym_in) &lt;= 6) &amp; (abs(sym_in) &gt; 4);
0034 idx_7 = (abs(sym_in) &lt;= 4) &amp; (abs(sym_in) &gt; 2);
0035 idx_8 = (abs(sym_in) &lt;= 