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Weight Distribution of Low-Density Parity-Check Codes
IEEE Transactions on Information Theory, 2006We derive the average weight distribution function and its asymptotic growth rate for low-density parity-check (LDPC) code ensembles. We show that the growth rate of the minimum distance of LDPC codes depends only on the degree distribution pair. It turns out that capacity-achieving sequences of standard (unstructured) LDPC codes under iterative ...
Di, C., Richardson, T., Urbanke, R.
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Iterative encoding of low-density parity-check codes
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE, 2004Motivated by the potential to reuse the decoder architecture, and thus reduce circuit space, we explore the use of iterative encoding techniques which are based upon the graphical representation of the code. We design codes by identifying associated encoder convergence constraints and also eliminating some well known undesirable properties for sum ...
David Victor Lawrie Haley +2 more
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