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EnglishSince irregular low-density parity-check (LDPC) codes are known to perform better than regular ones, and to exhibit, like them, the so-called ‘threshold phenomenon’, this Letter investigates a low-complexity upper bound on belief-propagation decoding thresholds for this class of codes on memoryless binary input additive white Gaussian noise channels, with sum-product decoding. A simplified analysis of the belief-propagation decoding algorithm is used, i.e. consider a Gaussian approximation for message densities under density evolution, and a simple algorithmic method, defined recently, to estimate the decoding thresholds for regular and irregular LDPC codes.
| Titolo: | Low-complexity bound on irregular LDPC belief-propagation decoding thresholds using a Gaussian approximation |
| Autori: | |
| Data di pubblicazione: | 2018 |
| Stato di pubblicazione: | Pubblicato |
| Rivista: | |
| Abstract: | Since irregular low-density parity-check (LDPC) codes are known to perform better than regular ones, and to exhibit, like them, the so-called ‘threshold phenomenon’, this Letter investigates a low-complexity upper bound on belief-propagation decoding thresholds for this class of codes on memoryless binary input additive white Gaussian noise channels, with sum-product decoding. A simplified analysis of the belief-propagation decoding algorithm is used, i.e. consider a Gaussian approximation for message densities under density evolution, and a simple algorithmic method, defined recently, to estimate the decoding thresholds for regular and irregular LDPC codes. |
| Handle: | http://hdl.handle.net/11368/2928430 |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1049/el.2018.0478 |
| URL: | http://scitation.aip.org/dbt/dbt.jsp?KEY=ELLEAK |
| Appare nelle tipologie: | 1.1 Articolo in Rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| BSV-LDPC-EL.pdf | Articolo principale | Bozza finale post-referaggio (post-print) | Copyright Editore | Open Access Visualizza/Apri |
| vatta soranzo babich.pdf | Documento in Versione Editoriale | Copyright Editore | Administrator Richiedi una copia |
http://hdl.handle.net/11368/2928430
