[MA NA] = size(CA);
[MB NB] = size(CB);

if (NA == NB)
  for i=1:NA
    comb_CA_CB(2*i-1) = CA(i);
    comb_CA_CB(2*i) = CB(i);
   end 
else
    NA
    NB
   error('Error - Puncturing Pattern CA and CB are not equal in length');
end