Exit-chart
This application estimate iterative decoding threshold using degree description, Stephan ten Brink. More general decription of LDPC codes ensemble. Based on paper
S. ten Brink, “Convergence behaviour of iteratively decoded parallel concatenated codes,” IEEE Trans. on Comm., vol. 49, Oct 2001.
J. Hagenauer, "The exit chart - introduction to extrinsic information transfer in iterative processing," 2004 12th European Signal Processing Conference, Vienna, 2004, pp. 1541-1548.