Content Delivery in Erasure Broadcast Channels With Cache and Feedback

Abstract : We study a content delivery problem in a K-user erasure broadcast channel such that a content providing server wishes to deliver requested files to users, each equipped with a cache of a finite size. Assuming that the transmitter has state feedback and user caches can be filled during off-peak hours reliably by the decentralized content placement, we characterize the achievable rate region as a function of the memory sizes and the erasure probabilities for some special cases. The proposed delivery scheme, based on the broadcasting scheme by Wang and Gatzianas et al., exploits the receiver side information established during the placement phase. Our results can be extended to the centralized content placement as well as multi-antenna broadcast channels with state feedback.
Type de document :
Article dans une revue
IEEE Transactions on Information Theory, Institute of Electrical and Electronics Engineers, 2016, 62 (11), pp.6407-6422. 〈10.1109/TIT.2016.2605123〉
Liste complète des métadonnées

https://hal-centralesupelec.archives-ouvertes.fr/hal-01433728
Contributeur : Sheng Yang <>
Soumis le : jeudi 12 janvier 2017 - 22:07:20
Dernière modification le : jeudi 11 octobre 2018 - 16:40:31

Lien texte intégral

Identifiants

Citation

Asma Ghorbel, Mari Kobayashi, Sheng Yang. Content Delivery in Erasure Broadcast Channels With Cache and Feedback. IEEE Transactions on Information Theory, Institute of Electrical and Electronics Engineers, 2016, 62 (11), pp.6407-6422. 〈10.1109/TIT.2016.2605123〉. 〈hal-01433728〉

Partager

Métriques

Consultations de la notice

157