Fast tree-trellis list Viterbi decoding

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2006
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Röder, Martin
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IEEE Transactions on Communications ; 54 (2006), 3. - pp. 453-461. - ISSN 0090-6778. - eISSN 1558-0857
Abstract
A list Viterbi algorithm (LVA) finds n most likely paths in a trellis diagram of a convolutional code. One of the most efficient LVAs is the tree-trellis algorithm of Soong and Huang. We propose a new implementation of this algorithm. Instead of storing the candidate paths in a single list sorted according to the metrics of the paths, we show that it is computationally more efficient to use several unsorted lists, where all paths of the same list have the same metric. For an arbitrary integer bit metric, both the time and space complexity of our implementation are linear in n. Experimental results for a binary symmetric channel and an additive white Gaussian noise channel show that our implementation is much faster than all previous LVAs.
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004 Computer Science
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ISO 690RĂ–DER, Martin, Raouf HAMZAOUI, 2006. Fast tree-trellis list Viterbi decoding. In: IEEE Transactions on Communications. 54(3), pp. 453-461. ISSN 0090-6778. eISSN 1558-0857. Available under: doi: 10.1109/TCOMM.2006.869812
BibTex
@article{Roder2006treet-22212,
  year={2006},
  doi={10.1109/TCOMM.2006.869812},
  title={Fast tree-trellis list Viterbi decoding},
  number={3},
  volume={54},
  issn={0090-6778},
  journal={IEEE Transactions on Communications},
  pages={453--461},
  author={Röder, Martin and Hamzaoui, Raouf},
  note={Das beigefĂ¼gte pdf entspricht der eingereichten Version}
}
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