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Turbo Decoding: Why Stopping Criteria do Work

By Axel Heim and Ulrich Sorger


The convergence of iterative decoding schemes is considered. The class of dually coupled codes is recalled, being a super class to both Turbo and LDPC codes. It is proven that the output L-values of a Turbo decoder cannot grow to in?nity, while those of an LDPC decoder can. Finally, a new decoder parameter is introduced by which the convergence behavior can be controlled

Topics: Belief-Propagation Bit-Information set Convergence Stopping-Criteria Turbo decoding, Engineering, computing & technology :: Computer science [C05], Ingénierie, informatique & technologie :: Sciences informatiques [C05]
Year: 2008
DOI identifier: 10.1109/turbocoding.2008.4658707
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