Low-complexity Computational Units for the Local-SOVA Decoding Algorithm - Under Review, Submitted to PIMRC'20 WS - ETTCOM - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2020

Low-complexity Computational Units for the Local-SOVA Decoding Algorithm - Under Review, Submitted to PIMRC'20 WS - ETTCOM

Rami Klaimi
Abdel Charbel
  • Fonction : Auteur
Norbert Wehn
  • Fonction : Auteur
  • PersonId : 1062258
Catherine Douillard

Résumé

Recently the Local-SOVA algorithm was suggested as an alternative to the max-Log MAP algorithm commonly used for decoding Turbo codes. In this work, we introduce new complexity reductions to the Local-SOVA algorithm, which allow an efficient implementation at a marginal BER penalty of 0.05 dB. Furthermore, we present the first hardware architectures for the computational units of the Local-SOVA algorithm, namely the add-compare select unit and the soft output unit of the Local-SOVA for radix orders 2, 4 and 8 were proposed. We provide place & route implementation results for 28nm technology and demonstrate an area reduction of 46 − 75% for the soft output unit for radix orders ≥ 4 in comparison with the respective max-Log MAP soft output unit. These area reductions compensate for the overhead in the add compare select unit, resulting in overall area saving of around 27 − 46% compared to the max-Log-MAP. These savings simplify the design and implementation of high throughput Turbo decoders.
Fichier principal
Vignette du fichier
1570643453.pdf (351.81 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02545582 , version 1 (17-04-2020)
hal-02545582 , version 2 (21-04-2020)
hal-02545582 , version 3 (27-04-2020)
hal-02545582 , version 4 (12-05-2020)

Identifiants

  • HAL Id : hal-02545582 , version 3

Citer

Stefan Weithoffer, Rami Klaimi, Abdel Charbel, Norbert Wehn, Catherine Douillard. Low-complexity Computational Units for the Local-SOVA Decoding Algorithm - Under Review, Submitted to PIMRC'20 WS - ETTCOM. 2020. ⟨hal-02545582v3⟩
221 Consultations
401 Téléchargements

Partager

More