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Design of Coded Caching Schemes through Proper Orthogonal Arrays | IEEE Conference Publication | IEEE Xplore

Design of Coded Caching Schemes through Proper Orthogonal Arrays


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 ...Show More

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.
Date of Conference: 26 June 2022 - 01 July 2022
Date Added to IEEE Xplore: 03 August 2022
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Conference Location: Espoo, Finland

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