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Non-Binary LDPC Codes for Orthogonal Modulations: Analysis and Code Design

Liva, Gianluigi and Matuz, Balazs and Paolini, Enrico and Flanagan, Mark (2017) Non-Binary LDPC Codes for Orthogonal Modulations: Analysis and Code Design. ICC 2017, Paris, Frankreich.

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Abstract

In this paper, we present a low-density parity-check coded modulation approach addressing orthogonal modulations with moderate order (between 8 and 32) over the additive white Gaussian noise channel. The proposed design is based on a constrained optimization of a non-binary low-density paritycheck ensemble degree distribution, where the iterative decoding threshold is optimized via extrinsic information transfer analysis while restricting the search to degree distributions that target low error floors. For various orthogonal modulation orders, we provide useful approximations to the extrinsic information transfer functions, which enable a fast optimization with respect to the iterative decoding threshold. The approach is validated via codeword error rate Monte Carlo simulations and complemented by an error floor analysis, showing gains up to 0:8 dB at a codeword error rate of 10-4 with respect to existing designs, down to information block lengths as short as 192 bits.

Item URL in elib:https://elib.dlr.de/112011/
Document Type:Conference or Workshop Item (Speech)
Title:Non-Binary LDPC Codes for Orthogonal Modulations: Analysis and Code Design
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Liva, GianluigiGianluigi.Liva (at) dlr.deUNSPECIFIED
Matuz, BalazsBalazs.Matuz (at) dlr.deUNSPECIFIED
Paolini, Enricouniv. of bolognaUNSPECIFIED
Flanagan, MarkUniversity College DublinUNSPECIFIED
Date:2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:Non-binary LDPC codes, orthogonal modulations
Event Title:ICC 2017
Event Location:Paris, Frankreich
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Multimedia Satellitennetze
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Matuz, Balazs
Deposited On:27 Apr 2017 13:10
Last Modified:27 Apr 2017 13:10

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