Coded caching and spatial multiplexing gain trade-off in dynamic MISO networks |
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Author: | Abolpour, Milad1; Salehi, MohammadJavad1; Tölli, Antti1 |
Organizations: |
1Centre for Wireless Communications, University of Oulu, 90570 Oulu, Finland |
Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 0.7 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2023020926633 |
Language: | English |
Published: |
Institute of Electrical and Electronics Engineers,
2022
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Publish Date: | 2023-02-09 |
Description: |
AbstractThe global caching gain of multi-antenna coded caching techniques can be also mostly achieved in dynamic network setups, where the cache contents of users are dictated by a central server, and each user can freely join or leave the network at any moment. In the dynamic setup, users are assigned to a limited set of caching profiles and the non-uniformness in the number of users assigned to each profile is compensated during the delivery phase by either adding phantom users for multicasting or serving a subset of users with unicast transmissions. In this paper, we perform a thorough analysis and provide closed-form representations of the achievable degrees of freedom (DoF) in such hybrid schemes, and assess the inherent trade-off between the global caching and spatial multiplexing gains caused by either adding phantom users or serving parts of the data through unicasting. see all
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Series: |
IEEE International Workshop on Signal Processing Advances in Wireless Communications |
ISSN: | 2325-3789 |
ISSN-L: | 2325-3789 |
ISBN: | 978-1-6654-9455-7 |
ISBN Print: | 978-1-6654-9456-4 |
Article number: | 9834002 |
DOI: | 10.1109/spawc51304.2022.9834002 |
OADOI: | https://oadoi.org/10.1109/spawc51304.2022.9834002 |
Host publication: |
2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC), 04-06 July 2022, Oulu, Finland |
Conference: |
IEEE International Workshop on Signal Processing Advances in Wireless Communication |
Type of Publication: |
A4 Article in conference proceedings |
Field of Science: |
213 Electronic, automation and communications engineering, electronics |
Subjects: | |
Copyright information: |
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