| 摘要 |
PROBLEM TO BE SOLVED: To provide a decoding apparatus with a reduced circuit scale using a low density parity check code suitable for correcting an error caused in a transmission path for high speed transmission of data and to provide a decoding method. SOLUTION: A check matrix is configured as a set of a plurality of partial matrices the number in the column direction of which is an integer twice the number of column weights and the number in the row direction of which is an integer equal to the number of row weights, wherein the column weight is the number of elements in one column whose value is "1", and the row weight is the number of elements in one row whose value is "1", the row weight of the partial matrices is configured to be all "1", and the sum of the column weight of the (2r-1)th partial matrix and the 2r-th partial matrix (wherein r is a column weight number) which are consecutive in the column direction of the check matrix is configured to be all "1". First and second storage means respectively store row processing arithmetic data and column processing arithmetic data by each same row weight number and each same column weight number as to the elements whose value is "1" in the check matrix. COPYRIGHT: (C)2007,JPO&INPIT
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