Some new Constructions of Coded Caching Schemes with Reduced Subpacketization

08/19/2019

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by   Wentu Song, et al.

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First, a new perspective based on binary matrices of placement delivery array (PDA) design was introduced, by which the PDA design problem can be simplified. From this new perspective, and based on some families of combinatorial designs, new schemes with low subpacketization for centralized coded caching problem were constructed. We also give a technique for constructing new coded caching scheme from known schemes based on direct product of PDAs.