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行列初期値
The parity check matrix initial value table is used, for example, for digital broadcast to mobile terminals.
The information matrix part of the check matrix H is represented by a check matrix initial value table representing, in each of 360 columns, the position of one element of that information matrix part.
The information matrix section of the check matrix (H) is represented by a check matrix initial value table expressing the position of one element of the information matrix section for each of 360 rows.
The specific check matrix is defined by arraying one element of a submatrix corresponding to the information length N-P according to the encoding rate in the column direction cyclically every 374 columns by using a predetermined check matrix initial value table as initial values.
The parity check matrix H for the LDPC encoding is configured such that one element of an information matrix, which is defined by the code length and a parity matrix initial value table which represents, for every 360 columns, the position of the one element of the information matrix which corresponds to and the information length corresponding to the code rate, is positioned periodically every 360 columns in the columnar direction.
An LDPC code inspection matrix is configured by arranging, in a cycle of 360 columns in the column direction, one element of an information matrix decided by an inspection matrix initial value table which expresses, for every 360 columns, a position of one element of the information matrix corresponding to an information length corresponding to a code length and an encoding ratio of the inspection matrix.
The check matrix of the LDPC code is constructed by arranging elements of 1 of the information matrix determined by a check matrix initial value table indicating the positions of the elements of 1 of the information matrix corresponding to an information length matched to the code length and coding ratio of the check matrix of the LDPC code every 360 columns in a period of every 360 columns in the column direction.
The check matrix initial value table differs from that stated in the DVB-S. specification.
検査行列初期値テーブルは、DVB-S.の規格に規定されているものとは異なるものになっている。
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Synoniemen voor matrix initial value in het Engels