On Permutations with Second Order Separations between
Axel Huebner, Ralph Jordan, Joachim Grill · 2002
A new set of permutation parameters is introduced. It is called the set of second order sepa- rations and is a generalization of the well-known sym- bol separation. A construction method is presented that allows us to generate permutors with large sec- ond order separations. Additionally, we derive a lower bound on the minimum distance of serially concate- nated codes with a permutation of sufficiently large second order separations.