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- W4289655132 abstract "Coded caching is an effective technique to utilize multicasting opportunities to reduce the data transmission load in cached networks. In such a scheme, each file in the data center or library is usually divided into a number of packets to pursue a low broadcasting rate based on the designed placements at each user’s cache. However, the implementation complexity of this scheme increases with the number of packets. It is crucial to design a scheme with a small subpacketization level, while maintaining a relatively low transmission rate. Recently, a combinatorial structure called placement delivery array (PDA) was proposed as an effective tool to design coded caching schemes with a low subpacketization level. This paper proposes a novel PDA construction by selecting proper orthogonal arrays (POAs). It generalizes the existing construction, making it suitable to the scenario with a more flexible memory size. Based on the proposed PDA construction, a new coded caching scheme with the coded placement is further proposed. It is shown that the proposed schemes can yield a lower subpacketization level or transmission rate over the benchmark schemes." @default.
- W4289655132 created "2022-08-03" @default.
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- W4289655132 date "2022-06-26" @default.
- W4289655132 modified "2023-09-27" @default.
- W4289655132 title "Design of Coded Caching Schemes through Proper Orthogonal Arrays" @default.
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- W4289655132 doi "https://doi.org/10.1109/isit50566.2022.9834597" @default.
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