Prof. Dr.-Ing. Werner Henkel
We introduce a new algorithm for constructing LDPC codes based on a Protograph. With Protographs, we have a base graph (mother graph), which is duplicated a number of times followed by a special edge permutation obtaining the largest possible girth. This report presents an algorithm for choosing the permutations for girth maximization given a degree distribution and the corresponding mother graph.
[Report] A Protograph Construction for LDPC Unequal Error Protection Codes