Modified Decoding Algorithm of LDPC Codes

The simple algorithms based on belief propagation algorithm of LDPC codes are studied. A modified algorithm which integrates Row Message Passing schedule with Offset Min-Sum algorithm for decoding LDPC codes is proposed. The proposed algorithm facilitates hardware implementation because it improves the convergence property while its computation complexity is the same as Offset Min-Sum algorithm, and it reduces the storage for the optimized memory method. The simulation results demonstrate that the proposed algorithm reduces the average iterations and quantization implementation memory.