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- W3080924863 abstract "A three-server coded caching scheme was presented recently by Luo et al. that extends the single-server coded caching scheme by Maddah-Ali and Niesen. Forming user sets as in the single-server case, Luo et al. show that by such user sets that satisfy certain conditions, the rate of the three-server scheme may be reduced to less than two-thirds of the rate of the single-server scheme. Yet, in some cases, the is not perfect (i.e., some of the sets are left unpaired) and the requirements of the unpaired sets must then be satisfied by a sub-optimal scheme. This results in the so-called pairing loss, leading to a transmission rate greater than one-half of the single-server scheme due to imperfect pairing.In this paper, it is shown that instead of just user sets, groups of 2 and 6 user sets can be formed, enabling a more efficient organization. It is shown that within groups of size 6 (and 2), the user demands can be satisfied at a rate equal to one-half that of the single-server scheme. Then, through a specific example, a grouping algorithm is given that forms all user sets into such groups of size 2 or 6. Hence, the three-server rate may be uniformly reduced to exactly half the single-server rate, eliminating the loss altogether." @default.
- W3080924863 created "2020-09-01" @default.
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- W3080924863 date "2020-06-01" @default.
- W3080924863 modified "2023-09-26" @default.
- W3080924863 title "Eliminating Pairing Loss for Coded Caching with Three Erasure-Coded Servers" @default.
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- W3080924863 doi "https://doi.org/10.1109/isit44484.2020.9174437" @default.
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