Conference paper Open Access

A Low-Complexity Dual Trellis Decoding Algorithm for High-Rate Convolutional Codes

Son Le, V.; Abdel Nour, C.; Douillard, C.; Boutillon, E.

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<dc:creator>Son Le, V.</dc:creator>
<dc:creator>Abdel Nour, C.</dc:creator>
<dc:creator>Douillard, C.</dc:creator>
<dc:creator>Boutillon, E.</dc:creator>
<dc:date>2020-08-04</dc:date>
<dc:description>Decoding using the dual trellis is considered as a potential technique to increase the throughput of soft-input soft-output decoders for high coding rate convolutional codes. However, the dual Log-MAP algorithm suffers from a high decoding complexity. More specifically, the source of complexity comes from the soft-output unit, which has to handle a high number of extrinsic values in parallel. In this paper, we present a new low-complexity sub-optimal decoding algorithm using the dual trellis, namely the dual Max-Log-MAP algorithm, suited for high coding rate convolutional codes. A complexity analysis and simulation results are provided to compare the dual Max- Log-MAP and the dual Log-MAP algorithms. Despite a minor loss of about 0.2 dB in performance, the dual Max-Log-MAP algorithm significantly reduces the decoder complexity and makes it a first-choice algorithm for high-throughput high-rate decoding of convolutional and turbo codes.</dc:description>
<dc:identifier>https://zenodo.org/record/3971729</dc:identifier>
<dc:identifier>10.5281/zenodo.3971729</dc:identifier>
<dc:identifier>oai:zenodo.org:3971729</dc:identifier>
<dc:language>eng</dc:language>
<dc:relation>info:eu-repo/grantAgreement/EC/H2020/760150/</dc:relation>
<dc:relation>doi:10.5281/zenodo.3971728</dc:relation>
<dc:relation>url:https://zenodo.org/communities/epic_h2020</dc:relation>
<dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
<dc:subject>Convolutional codes</dc:subject>
<dc:subject>High coding rate</dc:subject>
<dc:subject>Dual trellis</dc:subject>
<dc:subject>High-throughput decoder</dc:subject>
<dc:subject>Low-complexity decoder</dc:subject>
<dc:subject>Turbo codes</dc:subject>
<dc:title>A Low-Complexity Dual Trellis Decoding Algorithm for High-Rate Convolutional Codes</dc:title>
<dc:type>info:eu-repo/semantics/conferencePaper</dc:type>
<dc:type>publication-conferencepaper</dc:type>
</oai_dc:dc>

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