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Efficient stopping rule for turbo decoders
A new stopping rule for turbo codes, the input-output consistency (IOC) check is presented. It is based on an extended maximum a posteriori algorithm that also outputs (hard) extrinsic estimates on the coded bits. In parallel, the hard decisions of the info bits are re-encoded and if the two sequences coincide, iterative decoding is stopped. Remarkably, IOC beats other known stopping rules in terms of error rate and convergence speed, closely approaching ideal 'Genie'-aided decoding.doi:10.1049/el:20064403 fatcat:sgmdvx2jo5bjxbahkexwzoaa64