Decode linear block code to recover binary vector data
Block sublibrary of Error Detection and Correction
The Binary Linear Decoder block recovers a binary message vector from a binary codeword vector of a linear block code.
The Generator matrix parameter is the generator matrix for the block code. For proper decoding, this should match the Generator matrix parameter in the corresponding Binary Linear Encoder block. If N is the codeword length of the code, then Generator matrix must have N columns. If K is the message length of the code, then the Generator matrix parameter must have K rows.
This block accepts a column vector input signal containing N elements. This block outputs a column vector with a length of K elements.
The decoder tries to correct errors, using the Decoding
table parameter. If Decoding table is
the scalar 0, then the block defaults to the table produced by the Communications System Toolbox™ function
syndtable. Otherwise, Decoding
table must be a 2N-K-by-N binary
matrix. The rth row of this matrix is the correction
vector for a received binary codeword whose syndrome has decimal integer
value r-1. The syndrome of a received codeword
is its product with the transpose of the parity-check matrix.
For information about the data types each block port supports, see the Supported Data Type table on this page.
Generator matrix for the code; same as in Binary Linear Encoder block.
Either a 2N-K-by-N matrix that lists correction vectors for each codeword's syndrome; or the scalar 0, in which case the block defaults to the table corresponding to the Generator matrix parameter.
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