Low-resolution horizontal and vertical layered mutual information maximizing LDPC decoding

Publikationstyp
Conference Paper not in Proceedings
Publikationsdatum
2022-10
Sprache
English
Author
Mohr, Philipp orcid-logo
Bauch, Gerhard 
Institut
Nachrichtentechnik E-8 
DOI
10.15480/882.4907
TORE-URI
http://hdl.handle.net/11420/14581
Citation
56th Asilomar Conference on Signals, Systems and Computers (ACSSC 2022)
Contribution to Conference
56th Asilomar Conference on Signals, Systems, and Computers, 2022 
Publisher DOI
10.48550/arXiv.2212.02144
Scopus ID
2-s2.0-85150185678
ArXiv ID
2212.02144v2
We investigate iterative low-resolution message-passing algorithms for quasi-cyclic LDPC codes with horizontal and vertical layered schedules. Coarse quantization and layered scheduling are highly relevant for hardware implementations to reduce the bit width of messages and the number of decoding iterations. As a novelty, this paper compares the two scheduling variants in combination with mutual information maximizing compression operations in variable and check nodes. We evaluate the complexity and error rate performance for various configurations. Dedicated hardware architectures for regular quasi-cyclic LDPC decoders are derived on a conceptual level. The hardware-resource estimates confirm that most of the complexity lies within the routing network operations. Our simulations reveal similar error rate performance for both layered schedules but a slightly lower average iteration count for the horizontal decoder.
Schlagworte
Computer Science - Information Theory
Computer Science - Information Theory
Mathematics - Information Theory
DDC Class
600: Technik
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/4.0/
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