Decentralized coded caching with distinct cache capacities

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Title: Decentralized coded caching with distinct cache capacities
Authors: Mohammadi Amiri, M
Gunduz, D
Item Type: Conference Paper
Abstract: Decentralized coded caching is studied for a content server with N files, each of size F bits, serving K active users, each equipped with a cache of distinct capacity. It is assumed that the users' caches are filled in advance during the off-peak traffic period without the knowledge of the number of active users, their identities, or the particular demands. User demands are revealed during the peak traffic period, and are served simultaneously through an error-free shared link. A new decentralized coded caching scheme is proposed for this scenario, and it is shown to improve upon the state-of-the-art in terms of the required delivery rate over the shared link, when there are more users in the system than the number of files. Numerical results indicate that the improvement becomes more significant as the cache capacities of the users become more skewed.
Issue Date: 6-Mar-2017
Date of Acceptance: 9-Jul-2016
ISSN: 1058-6393
Publisher: IEEE
Start Page: 734
End Page: 738
Journal / Book Title: Conference Record - Asilomar Conference on Signals, Systems and Computers
Copyright Statement: © 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor/Funder: Commission of the European Communities
Commission of the European Communities
Funder's Grant Number: 690893
Conference Name: Asilomar Conference on Signals, Systems and Computers
Publication Status: Published
Start Date: 2016-11-06
Conference Place: Pacific Grove, CA
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

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