Decoding low-density parity check (LDPC) codewords

A system for decoding a low-density parity-check (LDPC) codeword, the system comprising:

• a partial parity check module configured to perform a partial parity check based on updates to a portion of variable nodes;
• an iteration condition checker coupled to the partial parity check module and configured to determine whether an iteration condition of a plurality of iteration conditions has been met, wherein the iteration condition checker is configured based on a latency to decode a last codeword;
• and
• an iteration condition storage module configured to store at least one iteration condition.

A system for decoding a low-density parity-check (LDPC) codeword, the system comprising:

• a partial parity check module configured to perform a partial parity check based on updates to a portion of variable nodes;
• an iteration condition checker coupled to the partial parity check module, wherein the iteration condition checker is configured to determine whether an iteration condition of a plurality of iteration conditions has been met, and to report a decoding result based on a maximum number of partial iterations being performed, the maximum number of partial iterations being based on a latency to decode a last codeword;
• and
• an iteration condition storage module configured to store at least one iteration condition.

A computer-readable, non-transitory media comprising instructions therein that, when executed by a processor, implement a method of decoding a low-density parity check (LDPC) codeword, the method comprising:

• performing a partial parity check;
• based on the partial parity check, determining whether an iteration condition is met, wherein determining whether the iteration condition is met includes determining whether a time to decode a last codeword is approaching;
• when the iteration condition is met, reporting a decoding result;
• and
• when the iteration condition is not met, updating a plurality of check nodes and performing a parity check.