Multi-antenna coded caching analysis in finite SNR and finite subpacketization

Zhao, Hui; Lampiris, Eleftherios; Caire, Giuseppe; Elia, Petros
WSA 2021, 25th International ITG Workshop on Smart Antennas, 10-12 November 2021, Sophia Antipolis, France

We investigate the performance of multi-antenna coded caching delivery algorithms operating under practical constraints. Specifically, under the constraints of finite subpacketization and finite signal-to-noise ratio (SNR) we compare two popular algorithms, one exhibiting low subpacketization while the other transmits multicast messages, hence requiring fewer symbols for communication and resulting in increased power per transmitted symbol. Our work is motivated by the fact that, while many multi-antenna coded caching algorithms exhibit the same asymptotic performance, when factoring practical limitations such as finite subpacketization and finite SNR, the real-world performances differ significantly.

Type:
Conference
City:
Sophia Antipolis
Date:
2021-11-09
Department:
Communication systems
Eurecom Ref:
6706
Copyright:
Copyright ITG. Personal use of this material is permitted. The definitive version of this paper was published in WSA 2021, 25th International ITG Workshop on Smart Antennas, 10-12 November 2021, Sophia Antipolis, France and is available at :

PERMALINK : https://www.eurecom.fr/publication/6706