Self-Corrected Belief-Propagation Decoder for Source Coding With Unknown Source Statistics

This letter describes a practical Slepian-Wolf source coding scheme based on Low Density Parity Check (LDPC) codes. It considers the realistic setup where parameters of statistical model between and side information are unknown. A novel Self-Corrected Belief-Propagation (SC-BP) algorithm is proposed in order to make robust incorrect by introducing some memory inside LDPC decoder. Two Dimensional Evolution (2D-DE) analysis then developed predict theoretical performance SC-BP Both 2D-DE Monte-Carlo simulations confirm robustness The solution allows for an important complexity reduction shows very close existing methods which jointly estimate sequence.