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Computer Science > Information Theory

arXiv:1512.05857 (cs)
[Submitted on 18 Dec 2015]

Title:Transmission and Scheduling Aspects of Distributed Storage and Their Connections with Index Coding

Authors:Parastoo Sadeghi
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Abstract:Index coding is often studied with the assumption that a single source has all the messages requested by the receivers. We refer to this as \emph{centralized} index coding. In contrast, this paper focuses on \emph{distributed} index coding and addresses the following question: How does the availability of messages at distributed sources (storage nodes) affect the solutions and achievable rates of index coding? An extension to the work of Arbabjolfaei et al. in ISIT 2013 is presented when distributed sources communicate via a semi-deterministic multiple access channel (MAC) to simultaneous receivers. A numbers of examples are discussed that show the effect of message distribution and redundancy across the network on achievable rates of index coding and motivate future research on designing practical network storage codes that offer high index coding rates.
Subjects: Information Theory (cs.IT)
Cite as: arXiv:1512.05857 [cs.IT]
  (or arXiv:1512.05857v1 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.1512.05857

Submission history

From: Parastoo Sadeghi [view email]
[v1] Fri, 18 Dec 2015 05:38:40 UTC (516 KB)
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