Towards the Exact Rate-Memory Trade-off for Uncoded Caching with Secure Delivery
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Final Accepted Manuscript
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IEEECitation
M. Bahrami, M. A. Attia, R. Tandon and B. Vasić, "Towards the exact rate-memory trade-off for uncoded caching with secure delivery," 2017 55th Annual Allerton Conference on Communication, Control, and Computing (Allerton), Monticello, IL, 2017, pp. 878-885. doi: 10.1109/ALLERTON.2017.8262831Rights
Copyright © 2017, IEEE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We consider the problem of secure delivery in a single-hop caching network with a central server connected to multiple end-users via an insecure multi-cast link. The server has a database of a set of files (content) and each user, which is equipped with a local cache memory, requests access one of the files. In addition to delivering users' requests, the server needs to keep the files (information-theoretically) secure from an external eavesdropper observing the underlying communications between the server and users. We focus on an important class of content placement strategies where the pre-fetching is required to be uncoded and caches are filled with uncoded fragments of files. In this paper, we establish the exact characterization of secure rate-memory trade-off for the worst-case communication rate through a matching converse under the constraint of uncoded cache placement where the number of users is no larger than the number of files in the database.ISSN
2474-0195Version
Final accepted manuscriptSponsors
NSF [CAREER 1651492]Additional Links
http://ieeexplore.ieee.org/document/8262831/ae974a485f413a2113503eed53cd6c53
10.1109/ALLERTON.2017.8262831