This soft decoding algorithm for the sumproduct implementation of the ldpc codoes. The program calculates the log likelihood ratio. And add them all in the . After running the programme type Eji to fing the final matrix of lg likelyhood ratios.H=LDPC parity Check Matrixrx :recieved Signal vector H=LDPC parity Check Matrix N0=Noise vriance iter: Number pf iteration xHat :Decoded Vector(0/1)

softdectry.m

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