Convolutional low-density parity-check coding

An apparatus comprising:

• a memory configured to store information indicating a parity check matrix associated with a convolutional low-density parity-check (CLDPC) code, wherein the parity check matrix includes a first portion and a second portion, the first portion including a plurality of copies of a first sub-matrix that is associated with a first sub-code, the second portion including a copy of a second sub-matrix associated with a second sub-code;
• and
• an error correcting code (ECC) engine coupled to the memory and configured to process data based on the parity check matrix.

An apparatus comprising:

• a first decoder configured to perform a first decoding operation based a first subset of rows and columns of a parity check matrix corresponding to a convolutional low-density parity-check (CLDPC) code;
• and
• a second decoder coupled to the first decoder, the second decoder configured to perform a second decoding operation based a second subset of rows and columns of the parity check matrix, wherein the first subset has a first size that is greater than a second size of the second subset.

A method comprising:

• performing, by a first decoder, a first decoding operation based on a first subset of a parity check matrix corresponding to a convolutional low-density parity-check (CLDPC) code;
• and
• performing, by a second decoder, a second decoding operation based on a second subset of the parity check matrix, wherein the first subset has a first size that is greater than a second size of the second subset.

An apparatus comprising:

• a memory configured to store a codeword of a convolutional low-density parity-check (CLDPC) code, wherein the codeword includes a check point portion associated with a portion of the codeword;
• and
• a controller coupled to the memory, the controller configured to select the portion of the codeword to be selectively decoded.