Unveiling turbo codes: some results on parallel concatenated coding schemes
IEEE Transactions on Information Theory
Factor graphs and the sum-product algorithm
IEEE Transactions on Information Theory
Codes on graphs: normal realizations
IEEE Transactions on Information Theory
Turbo codes for image transmission-a joint channel and source decoding approach
IEEE Journal on Selected Areas in Communications
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Joint source-channel turbo decoding is a promising alternative to classical tandem/separate decoding, as the literature has shown in the recent years. It is able at the receiver to jointly use and to benefit both from the redundancy left, or introduced intentionally, by the source code and from the error correcting capabilities of the channel code. This offers great advantages in terms of robustness with particular codecs, at the expense however of a reasonable increase in decoding complexity. We focus in this tutorial presentation on the derivation of such turbo decoders within the factor graph framework and the Sum-Product algorithm, and on theoretical arguments underlining some of the potentials of the joint source-channel turbo decoding concept.