| 主权项 |
1. An apparatus, comprising:
at least one coder block having a parity check matrix; wherein the parity check matrix comprises each element of an H matrix expanded by a Progressive Edge Growth (“PEG”) expansion factor and an Approximate Cycle Extrinsic Message Degree (“ACE”) expansion factor; wherein the parity check matrix is for an accumulate-repeat-accumulate (“ARA”) code and is associated with an input block length; wherein the at least one coder block is configured for executing a modified PEG process; wherein the at least one coder block is configured to have:
each of variable nodes sj of the parity check matrix defined from m to 3m−1 for j;different starting values for connectivity k and different degrees for each of the variable nodes sj for different values of j;candidate check nodes from ciεNproto,sj0 for set N of a protograph, wherein the protograph represented by the H matrix includes an m×m H1 submatrix, an m×m H2 submatrix, and H3 submatrix each of which is a fixed matrix, the m×m H1 submatrix being an identity matrix, the m×m H2 submatrix being a fixed precoder, and the H3 submatrix being a 2m×2m version of the m×m H2 submatrix; andcardinality of the candidate check nodes from ciε Nsjl∩Nproto,sjk for depth l for the set of the variable nodes sj in the parity check matrix. |
