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Analysis of Channel Coding for Redundant Sources

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We describe the split-LDPC codes for channel coding of non-uniform sources. Firstly, we give their encoding structure and illustrate their performance at finite length. Then, we study the stability condition of split-LDPC under iterative decoding and the evolution of message densities on the graph representation. We also propose a description of split-LDPC decoding as a bi-dimensional dynamic system associated to a very accurate Gaussian approximation of message densities.

This talk is part of the Signal Processing and Communications Lab Seminars series.

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