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Jerkovits, Thomas und Liva, Gianluigi und Graell i Amat, Alexandre (2018) Improving the Decoding Threshold of Tailbiting Spatially Coupled LDPC Codes by Energy Shaping. IEEE Communications Letters. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/lcomm.2018.2802488. ISSN 1089-7798.
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Kurzfassung
Abstract—We show how the iterative decoding threshold of tailbiting spatially coupled (SC) low-density parity-check (LDPC) code ensembles can be improved over the binary input additive white Gaussian noise channel by allowing the use of different transmission energies for the codeword bits. We refer to the proposed approach as energy shaping. We focus on the special case where the transmission energy of a bit is selected among two values, and where a contiguous portion of the codeword is transmitted with the largest one. Given these constraints, an optimal energy boosting policy is derived by means of protograph extrinsic information transfer analysis. We show that the threshold of tailbiting SC-LDPC code ensembles can be made close to that of terminated code ensembles while avoiding the rate loss (due to termination). The analysis is complemented by Monte Carlo simulations, which confirm the viability of the approach.
| elib-URL des Eintrags: | https://elib.dlr.de/118786/ | ||||||||||||||||
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| Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||
| Titel: | Improving the Decoding Threshold of Tailbiting Spatially Coupled LDPC Codes by Energy Shaping | ||||||||||||||||
| Autoren: |
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| Datum: | 2018 | ||||||||||||||||
| Erschienen in: | IEEE Communications Letters | ||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||
| Open Access: | Nein | ||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||
| In SCOPUS: | Ja | ||||||||||||||||
| In ISI Web of Science: | Ja | ||||||||||||||||
| DOI: | 10.1109/lcomm.2018.2802488 | ||||||||||||||||
| Verlag: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||
| ISSN: | 1089-7798 | ||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||
| Stichwörter: | Convolutional LDPC codes, decoding threshold, spatial coupling, tailbiting codes | ||||||||||||||||
| HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||
| HGF - Programm: | Raumfahrt | ||||||||||||||||
| HGF - Programmthema: | Kommunikation und Navigation | ||||||||||||||||
| DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||
| DLR - Forschungsgebiet: | R KN - Kommunikation und Navigation | ||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | R - Vorhaben Multimedia Satellitennetze (alt) | ||||||||||||||||
| Standort: | Oberpfaffenhofen | ||||||||||||||||
| Institute & Einrichtungen: | Institut für Kommunikation und Navigation > Satellitennetze | ||||||||||||||||
| Hinterlegt von: | Jerkovits, Thomas | ||||||||||||||||
| Hinterlegt am: | 08 Feb 2018 14:21 | ||||||||||||||||
| Letzte Änderung: | 03 Nov 2023 10:59 |
Verfügbare Versionen dieses Eintrags
- Improving the Decoding Threshold of Tailbiting Spatially Coupled LDPC Codes by Energy Shaping. (deposited 08 Feb 2018 14:21) [Gegenwärtig angezeigt]
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