Subpacketization-Beamformer Interaction in Multi-Antenna Coded Caching
Information Theory
2019-12-23 v1 math.IT
Abstract
We study the joint effect of beamformer structure and subpacketization value on the achievable rate of cache-enabled multi-antenna communications at low-SNR. A mathematical approach with low-SNR approximations is used, to show that using simplistic beamformer structures, increasing subpacketization degrades the achievable rate; in contrast to what has been shown in the literature for more complex, optimized beamformer structures. The results suggest that for improving the low-SNR rate, subpacketization and beamformer complexity should be jointly increased.
Keywords
Cite
@article{arxiv.1912.09891,
title = {Subpacketization-Beamformer Interaction in Multi-Antenna Coded Caching},
author = {MohammadJavad Salehi and Antti Tölli and Seyed Pooya Shariatpanahi},
journal= {arXiv preprint arXiv:1912.09891},
year = {2019}
}