DECODING DEVICE AND DECODING METHOD FOR LOW DENSITY PARITY CHECK CODE

摘要

A decoding device for low density parity check (LDPC) code is provided in the present invention, including: a storage unit; a control unit for executing a check node updating control and a variable node updating control, wherein the check node updating control includes reading part variable node likelihood ratio information of the variable node likelihood ratio in the storage unit, according to the modulo structure of an LDPC code check matrix; storing the updated check node likelihood ratio to the storage unit; the variable node updating control includes reading part check node likelihood ratio information of the check node likelihood ratio in the storage unit, according to the modulo structure of the LDPC code check matrix; storing the updated variable node likelihood ratio to the storage unit; a processing unit for executing a check node updating and a variable node updating. The decoding device in the present invention controls the selecting and updating for the storage unit data according to the modulo structure, thereby realizing the decoder structuring and the parametric design, and achieving the effect of simplifying design and ensuring performance.