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Nouvelle architecture d'un décodeur des codes LDPC
Paperback
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ISBN10: 6206701794
ISBN13: 9786206701798
Publisher: Editions Universitaires Europeennes
Published: Jun 20 2024
Pages: 192
Weight: 0.64
Height: 0.44 Width: 6.00 Depth: 9.00
Language: French
ISBN13: 9786206701798
Publisher: Editions Universitaires Europeennes
Published: Jun 20 2024
Pages: 192
Weight: 0.64
Height: 0.44 Width: 6.00 Depth: 9.00
Language: French
Dans ce livre, nous nous sommes intéressés aux algorithmes de décodage des codes LDPC (Low Density Parity Check) et à leurs implémentations Hardware. Nous avons tout d'abord proposé une nouvelle approximation de l'équation de l'étape de mise à jour des noeuds de contrôle. Ce qui a permis de réduire d'une manière très significative la puissance de calcul et la complexité d'implémentation Hardware sans pertes notable de performances, en termes de BER (Bit Error Rate), par rapport à l'algorithme de référence BP (Belief Propagation) ou LLR-BP (Log Likelihood Ratio Belief Propagation). L'approximation proposée est testée et validée au sein d'une unité de décodage parallèle des codes LDPC régulier de degrés 3 et 6, respectivement des noeuds de variables et de contrôles. Par la suite cette approximation est implémentée sur une cible FPGA (Field Programmable Gate Arrays) de la firme d'Altera.
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