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Improved Converses and Gap Results for Coded Caching
February 16, 2017 Β· Declared Dead Β· π International Symposium on Information Theory
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Authors
Chien-Yi Wang, Shirin Saeedi Bidokhti, Michele Wigger
arXiv ID
1702.04834
Category
cs.IT: Information Theory
Citations
40
Venue
International Symposium on Information Theory
Last Checked
6 months ago
Abstract
Improved lower bounds on the average and the worst-case rate-memory tradeoffs for the Maddah-Ali&Niesen coded caching scenario are presented. For any number of users and files and for arbitrary cache sizes, the multiplicative gap between the exact rate-memory tradeoff and the new lower bound is less than 2.315 in the worst-case scenario and less than 2.507 in the average-case scenario.
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