A Multi-Antenna Coded Caching Scheme with Linear Subpacketization

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.

Authors:
Salehi Mohammad Javad, Tölli Antti, Shariatpanahi Seyed Pooya

Publication type:
A4 Article in conference proceedings

Place of publication:
2020 IEEE International Conference on Communications, ICC 2020

Keywords:
Coded Caching, Linear Subpacketization, Multi-Antenna Communications

Published:
27 July 2020

Full citation:
M. Salehi, A. Tölli and S. P. Shariatpanahi, “A Multi-Antenna Coded Caching Scheme with Linear Subpacketization,” ICC 2020 – 2020 IEEE International Conference on Communications (ICC), Dublin, Ireland, 2020, pp. 1-6, doi: 10.1109/ICC40277.2020.9148593

DOI:
https://doi.org/10.1109/ICC40277.2020.9148593

Read the publication here:
http://urn.fi/urn:nbn:fi-fe202102185257