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See detailOn the Convergence of Iterative Belief Propagation
Heim, A.; Sorger, Ulrich UL

in Proceedings of IEEE International Symposium on Information Theory ISIT (2009)

The convergence of iterative decoding schemes utilizing belief propagation is considered. A quantitative bound for the output L-values of a Turbo decoder is given that only depends on the received word ... [more ▼]

The convergence of iterative decoding schemes utilizing belief propagation is considered. A quantitative bound for the output L-values of a Turbo decoder is given that only depends on the received word and thus is independent from the decoder iterations. Further, it is shown that the exponential increase of the L-values in each iteration within an LDPC decoder is limited by the degree of the variable nodes. [less ▲]

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