H. B. Mahmoodi, M. J. Salehi and A. Tölli, "Asymmetric Multi-Antenna Coded Caching for Location-Dependent Content Delivery," GLOBECOM 2022 - 2022 IEEE Global Communications Conference, Rio de Janeiro, Brazil, 2022, pp. 1930-1935, doi: 10.1109/GLOBECOM48099.2022.10001456
Asymmetric multi-antenna coded caching for location-dependent content delivery
|Author:||Bakhshzad Mahmood, Hamidreza1; Salehi, MohammadJavad1; Tölli, Antti1|
1Centre for Wireless Communications, University of Oulu, 90570 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 0.6 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2023020926611
|Publish Date:|| 2023-02-09
Efficient usage of in-device storage and computation capabilities are key solutions to support data-intensive applications such as immersive digital experiences. This paper proposes a location-dependent multi-antenna coded caching - based content delivery scheme tailored specifically for wireless immersive viewing applications. First, a novel memory allocation process incentivizes the content relevant to the identified wireless bottleneck areas. This enables a trade-off between local and global caching gains and results in unequal fractions of location-dependent multimedia content cached by each user. Then, a novel packet generation process is carried out during the subsequent delivery phase, given the asymmetric cache placement. During this phase, the number of packets transmitted to each user is the same, while the sizes of the packets are proportional to the corresponding location-dependent cache ratios. In this regard, each user is served with location-specific content using joint multicast beamforming and a multi-rate modulation scheme that simultaneously benefits from global caching and spatial multiplexing gains. Numerical experiments and mathematical analysis demonstrate significant performance gains compared to the state-of-the-art.
|Pages:||1930 - 1935|
GLOBECOM 2022 - 2022 IEEE Global Communications Conference
IEEE Global Communications Conference
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work is supported by the Academy of Finland under grants no. 318927 (6G Flagship), 319059 and 343586, and by the Finnish Research Impact Foundation (Vaikuttavuuss ̈a ̈ati ̈o) under the project Directional Data Delivery for Wireless Immersive Digital Environments (3D-WIDE).
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
319059 (Academy of Finland Funding decision)
343586 (Academy of Finland Funding decision)
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