M. Abolpour, M. J. Salehi and A. Tölli, "Coded Caching and Spatial Multiplexing Gain Trade-off in Dynamic MISO Networks," 2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC), Oulu, Finland, 2022, pp. 1-5, doi: 10.1109/SPAWC51304.2022.9834002.
Coded caching and spatial multiplexing gain trade-off in dynamic MISO networks
|Author:||Abolpour, Milad1; Salehi, MohammadJavad1; Tölli, Antti1|
1Centre for Wireless Communications, University of Oulu, 90570 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 0.7 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2023020926633
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2023-02-09
The 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.
IEEE International Workshop on Signal Processing Advances in Wireless Communications
2022 IEEE 23rd International Workshop on Signal Processing Advances in Wireless Communication (SPAWC), 04-06 July 2022, Oulu, Finland
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
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