A Multi-Antenna Coded Caching Scheme with Linear Subpacketization release_uoybfpuwcnc6feuwtcbwmcfnpy

by MohammadJavad Salehi, Antti Tölli, Seyed Pooya Shariatpanahi

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2019  

Abstract

Exponentially growing subpacketization is known to be a major issue for practical implementation of coded caching, specially in networks with multi-antenna communication setups. We provide a new coded caching scheme for such networks, which requires linear subpacketization and is applicable to any set of network parameters, as long as the multi-antenna gain L is larger than or equal to the global caching gain t. Our scheme includes carefully designed cache placement and delivery algorithms; which are based on circular shift of two generator arrays in perpendicular directions. It also achieves the maximum possible degrees of freedom of t+L, during any transmission interval.
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Date   2019-10-23
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arXiv  1910.10384v1
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