The LDPC Encoder is a fully compatible CCSDS rate 223/255 (8160,7136) LDPC error control encoder.
A regular quasic–cyclic LDPC code with 511x511 square circulants with weight 2 in the parity check matrix is used. There are 2x16 circulants, resulting in a check node degree of 32 and a variable node degree of 4.