Design of masking matrix for QC-LDPC codes

The masking matrix plays an important role in constructing new classes of regular and irregular quasi-cyclic low density parity check (QC-LDPC) codes. By coupling two identical graphs in a special way, we present a new structure of the masking matrix, whose Tanner graph can be seen as a protograph. From this perspective, we propose a Gaussian Approximation… CONTINUE READING