Decoder and decoding method

A decoder comprising:

• an input configured to receive a set of logarithmic likelihood ratios (LLRs) corresponding to an encoded codeword node;
• a program storage configured to store a plurality instruction sequences;
• a scheduler configured to:
• read values of a codeword node length and a codeword node type of the encoded codeword node,
• select one of the instruction sequences based on the value of the codeword node length and on the value of the codeword node type, and
• generate commands based on the selected instruction sequence;
• a codeword node decoding pipeline configured to:
• receive the commands,
• based on the commands, make a selection of one or more processing methods implemented in one or more logic units of the codeword node decoding pipeline, and decode the encoded codeword node by applying the one or more selected processing methods to the set of LLRs to generate decoded bits corresponding to the encoded codeword node;
• an output storage configured to store the decoded bits corresponding to each encoded codeword node;
• and
• a decoder output operatively connected to the output storage and configured to output a decoded codeword generated based on the decoded bits.