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Generation of H matrix for ldpc in matlab

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pinkyvidya

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How to generate H matrix in matlab for ldpc?In matlab using the inbuilt command(fec.ldpcenc) it is possible to generate only default value of 32400x64800 parity matrix.Plz help me to generate H matriz for other parity matrices like (4320,3242)
 

use "hammgen" instead and form a generator matrix
then use "gen2par" function
apply "sparse" function to the obtained matrix
then use "fec.ldpcenc"
the "encode" in MATLAB and it will give you the LDPC codeword
 

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