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Subpacketization : beamformer interaction in multi-antenna coded caching |
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| Author: | Salehi, Mohammad Javad1; Tölli, Antti1; Shariatpanahi, Seyed Pooya2 |
| Organizations: |
1Center for Wireless Communications, University of Oulu, Oulu, Finland 2School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran |
| Format: | article |
| Version: | accepted version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 0.3 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2020062946070 |
| Language: | English |
| Published: |
Institute of Electrical and Electronics Engineers,
2020
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| Publish Date: | 2020-06-29 |
| Description: |
AbstractWe study the joint effect of beamformer structure and subpacketization level on the achievable rate of cache-enabled multi-antenna communications. We use appropriate low-SNR approximations, to show that using simple zero-forcing (ZF) beamformers, increasing subpacketization degrades the achievable rate; in contrast to what has been shown in the literature for more complex, optimized beamformers. We also numerically analyze the probability distribution of symmetric rate terms, in order to confirm the validity of mathematical outputs. The results suggest that for improving the content delivery rate at low-SNR, subpacketization level and beamformer complexity should be jointly increased. see all
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| ISBN: | 978-1-7281-6047-4 |
| ISBN Print: | 978-1-7281-6048-1 |
| Pages: | 1 - 5 |
| DOI: | 10.1109/6GSUMMIT49458.2020.9083779 |
| OADOI: | https://oadoi.org/10.1109/6GSUMMIT49458.2020.9083779 |
| Host publication: |
2020 2nd 6G Wireless Summit (6G SUMMIT) |
| Conference: |
6G Wireless Summit |
| 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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