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)-This is 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)