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Soft-Information Po...
Soft-Information Post-Processing for Chase-Pyndiah Decoding Based on Generalized Mutual Information
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- Strashofer, Andreas (författare)
- Technische Universität München (TUM),Technical University of Munich (TUM)
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- Lentner, Diego (författare)
- Technische Universität München (TUM),Technical University of Munich (TUM)
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- Liva, G. (författare)
- Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
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- Graell I Amat, Alexandre, 1976 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: 2023 12th International Symposium on Topics in Coding, ISTC 2023.
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Chase-Pyndiah decoding is widely used for decoding product codes. However, this method is suboptimal and requires scaling the soft information exchanged during the iterative processing. In this paper, we propose a framework for obtaining the scaling coefficients based on maximizing the generalized mutual information. Our approach yields gains up to 0.11 dB for product codes with two-error correcting extended BCH component codes over the binary-input additive white Gaussian noise channel compared to the original Chase-Pyndiah decoder with heuristically obtained coefficients. We also introduce an extrinsic version of the Chase-Pyndiah decoder and associate product codes with a turbo-like code ensemble to derive a Monte Carlo-based density evolution analysis. The resulting iterative decoding thresholds accurately predict the onset of the waterfall region.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- Density evolution
- mismatched decoding
- generalized mutual information
- forward error correction
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)