Efficient encoding of QC-LDPC codes with multiple-diagonal parity-check structure

An efficient encoding method is proposed for a class of quasi-cyclic low-density parity-check (QC-LDPC) codes with a multiple-diagonal parity-check structure. Its easy implementation with Chinese digital terrestrial/television multimedia broadcasting standard as an example is discussed. It is shown that the proposed encoder runs significantly faster and requires much fewer resources than the conventional shift-register-adder-accumulator encoder.