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Protograph-Based LDPC Code Design for Ternary Message Passing Decoding

Ben Yacoub, Emna and Steiner, Fabian and Matuz, Balazs and Liva, Gianluigi (2019) Protograph-Based LDPC Code Design for Ternary Message Passing Decoding. SCC, Rostock.

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Abstract

A ternary message passing (TMP) decoding algorithm for low-density parity-check codes is developed. All messages exchanged between variable and check nodes have a ternary alphabet, and the variable nodes exploit soft information from the channel. A density evolution analysis is developed for unstructured and protograph-based ensembles. For unstructured ensembles the stability condition is derived. Optimized ensembles for TMP decoding show asymptotic gains of up to 0.6 dB with respect to ensembles optimized for binary message passing decoding. Finite length simulations of codes from TMPoptimized ensembles show gains of up to 0.5 dB under TMP compared to protograph-based codes designed for unquantized belief propagation decoding.

Item URL in elib:https://elib.dlr.de/127184/
Document Type:Conference or Workshop Item (Speech)
Title:Protograph-Based LDPC Code Design for Ternary Message Passing Decoding
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ben Yacoub, Emnaemna.ben-yacoub (at) tum.deUNSPECIFIED
Steiner, FabianTUMUNSPECIFIED
Matuz, BalazsBalazs.Matuz (at) dlr.deUNSPECIFIED
Liva, GianluigiGianluigi.Liva (at) dlr.deUNSPECIFIED
Date:February 2019
Refereed publication:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:ternary, binary message passing, quantized decoders, LDPC codes
Event Title:SCC
Event Location:Rostock
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Matuz, Balazs
Deposited On:25 Jun 2019 13:32
Last Modified:25 Jun 2019 13:32

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