Ensemble analysis of pseudocodewords of protograph-based non-binary LDPC codes
D. Divsalar, Lara Dolecek · 2011
This paper presents a method for evaluating pseudocodeword weight enumerators of nonbinary LDPC codes built out of protographs. The ensemble enumerators are evaluated for both the finite-length and infinite-length regimes. Results of this type can be particularly useful for designing structured non-binary LDPC codes with good properties under message passing or linear programming decoding.