US Patent 7930621 Systems and methods for LDPC decoding with post processing

Various embodiments of the present invention provide systems and methods for decoding encoded information. For example, a method for post processing error correction in a decoder system is disclosed. The method includes receiving and iteratively decoding a soft input to generate a hard output associated with the soft input. The method further includes post processing when a plurality of parity checks fail. At least one bit of the hard output is identified as being potentially incorrect. The identified bit is modified, and the plurality of parity checks is thereafter repeated.