Impact of intra-flow network coding on the relay channel performance: an analytical study - Réseaux, Mobiles, Embarqués, Sans fil, Satellites Accéder directement au contenu
Communication Dans Un Congrès Année : 2012

Impact of intra-flow network coding on the relay channel performance: an analytical study

Résumé

One of the most powerful ways to achieve trans- mission reliability over wireless links is to employ efficient coding techniques. This paper investigates the performance of a transmission over a relay channel where information is protected by two layers of coding. In the first layer, transmission reliability is ensured by fountain coding at the source. The second layer incorporates network coding at the relay node. Thus, fountain coded packets are re-encoded at the relay in order to increase packet diversity and reduce energy consumption. Performance of the transmission is measured by the total number of trans- missions needed until the message is successfully decoded at the destination. We show through both analytical derivations and simulations that adding network coding capabilities at the relay optimizes system resource consumption. When the source uses a random linear fountain code, the proposed two-layer encoding becomes more powerful as it reduces the transmission rate over the direct link between the source and the destination.
Fichier principal
Vignette du fichier
WiMob2012.pdf (255.61 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00739119 , version 1 (12-12-2012)

Identifiants

  • HAL Id : hal-00739119 , version 1

Citer

Anya Apavatjrut, Claire Goursaud, Katia Jaffrès-Runser, Jean-Marie Gorce. Impact of intra-flow network coding on the relay channel performance: an analytical study. WiMob 2012, Oct 2012, Barcelone, Spain. pp.1569627651. ⟨hal-00739119⟩
277 Consultations
275 Téléchargements

Partager

Gmail Facebook X LinkedIn More