Zhang, Y., Khosravirad, S., Chu, X. orcid.org/0000-0003-1863-6149 et al. (1 more author) (2024) On the IRS deployment in smart factories considering blockage effects: collocated or distributed? IEEE Transactions on Wireless Communications, 23 (9). pp. 12084-12098. ISSN 1536-1276
Abstract
In this article, we study the collocated and distributed deployment of intelligent reflecting surfaces (IRS) for a fixed total number of IRS elements to support enhanced mobile broadband (eMBB) and ultra-reliable low-latency communication (URLLC) services inside a factory. We build a channel model that incorporates the line-of-sight (LoS) probability and power loss of each transmission path, and propose three metrics, namely, the expected received signal-to-noise ratio (SNR), expected finite-blocklength (FB) capacity, and expected outage probability, where the expectation is taken over the probability distributions of interior blockages and channel fading. The expected received SNR and expected FB capacity for extremely high blockage densities are derived in closed-form as functions of the amount and height of IRSs and the density, size, and penetration loss of blockages, which are verified by Monte Carlo simulations. Results show that deploying IRSs vertically higher leads to higher expected received SNR and expected FB capacity. By analysing the average/minimum/maximum of the three metrics versus the number of IRSs, we find that for high blockage densities, both eMBB and URLLC services benefit from distributed deployment; and for low blockage densities, URLLC services benefit from distributed deployment while eMBB services see limited difference between collocated and distributed deployment.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 The Author(s). Except as otherwise noted, this author-accepted version of a journal article published in IEEE Transactions on Wireless Communications is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Blockage, deployment; enhanced mobile broadband; finite-blocklength; intelligent reflecting surface; smart factory; ultra-reliable low-latency communications |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Funding Information: | Funder Grant number EUROPEAN COMMISSION - HORIZON 2020 766231 UK Research and Innovation EP/X038971/1 UK RESEARCH AND INNOVATION 101086219 EP/X038971/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 15 Apr 2024 15:14 |
Last Modified: | 08 Nov 2024 17:05 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers |
Refereed: | Yes |
Identification Number: | 10.1109/TWC.2024.3387886 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:211351 |