Graduate School and Research Center in Digital Sciences

Bridging the gap between multiplexing and diversity in finite SNR multiple antenna coded caching

Lampiris, Eleftherios; Elia, Petros; Caire, Giuseppe

ASILOMAR 2019, Asilomar Conference on Signals, Systems, and Computers, 3-6 November 2019, Pacific Grove, CA, USA 


We study the multi-antenna Coded Caching setting in the finite Signal-to-Noise-Ratio (SNR) region, with the purpose to utilize the extra resources from the multiple antennas to increase the rate performance of the system. Specifically, assuming an L-antenna setting with K cache-enabled users (each with normalized cache-size), previous works showed that at the high SNR region the performance is proportional to L+K  degreesof-freedom while, if one considers the low SNR region this would be outperformed by a strategy that focuses on beamforming a (single) multicast message (of K +1 elements) to its recipients. In order to bridge these two extremes we use a recently proposed algorithm that can balance the amount of users served in order to maximize the achieved sum-rate.

Document Bibtex

Title:Bridging the gap between multiplexing and diversity in finite SNR multiple antenna coded caching
Type:Conference
Language:English
City:Pacific Grove
Country:UNITED STATES
Date:
Department:Communication systems
Eurecom ref:6059
Copyright: Asilomar
Bibtex: @inproceedings{EURECOM+6059, year = {2019}, title = {{B}ridging the gap between multiplexing and diversity in finite {SNR} multiple antenna coded caching}, author = {{L}ampiris, {E}leftherios and {E}lia, {P}etros and {C}aire, {G}iuseppe}, booktitle = {{ASILOMAR} 2019, {A}silomar {C}onference on {S}ignals, {S}ystems, and {C}omputers, 3-6 {N}ovember 2019, {P}acific {G}rove, {CA}, {USA} \&\#13;\&\#10;}, address = {{P}acific {G}rove, {UNITED} {STATES}}, month = {11}, url = {http://www.eurecom.fr/publication/6059} }
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