| 摘要 |
The decoding device decoding coded data coded by a low density parity check code by using a plurality of parity check matrixes, comprises a pattern storing unit storing information about the parity check matrix and the segmentation pattern of the parity check matrix, which is formed by segmenting the parity check matrix into a plurality of row groups and into a plurality of column groups, and by allocating the parity check matrix so that there is one edge allocation area in the respective column groups within the respective row groups, a likelihood information storing unit storing likelihood information of respective code bits of the coded data divided into each memory cell with respect to the respective column groups, and a plurality of edge-by-edge arithmetic unit each connected to the memory cell storing the likelihood information about the column group, and updating the likelihood information based on the likelihood information stored in the connected memory cell.
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