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- Publisher Website: 10.1109/LWC.2022.3174448
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Article: Downlink Multi-RIS Aided Transmission in Backhaul Limited Networks
Title | Downlink Multi-RIS Aided Transmission in Backhaul Limited Networks |
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Authors | |
Keywords | Ergodic rate limited backhaul multi-RIS optimal deployment outage probability |
Issue Date | 2022 |
Citation | IEEE Wireless Communications Letters, 2022, v. 11, n. 7, p. 1458-1462 How to Cite? |
Abstract | This letter proposes an analytical framework for multi-reconfigurable intelligent surface (RIS) aided networks with limited backhaul capacity, where a simple symmetric structure is considered to explore the characteristics of multi-RIS systems with coherent transmissions. By using the Gamma distribution to model the composite RIS-aided channels, closed-form expressions in terms of the outage probability and the ergodic rate are derived. The theoretical results provide two design guidelines: 1) the minimum outage can be achieved by deploying the assisted RISs at certain locations; 2) the rate performance is bounded, and an optimal number of assisted RISs exists for rate maximization. Simulations verify our analysis and demonstrate the backhaul capacity is the bottleneck for multi-RIS systems. Compared with single-RIS systems, multi-RIS systems require a minimal backhaul capacity to ensure the performance gain. |
Persistent Identifier | http://hdl.handle.net/10722/349735 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 2.872 |
DC Field | Value | Language |
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dc.contributor.author | Xie, Ziyi | - |
dc.contributor.author | Yi, Wenqiang | - |
dc.contributor.author | Wu, Xuanli | - |
dc.contributor.author | Liu, Yuanwei | - |
dc.contributor.author | Nallanathan, Arumugam | - |
dc.date.accessioned | 2024-10-17T07:00:28Z | - |
dc.date.available | 2024-10-17T07:00:28Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | IEEE Wireless Communications Letters, 2022, v. 11, n. 7, p. 1458-1462 | - |
dc.identifier.issn | 2162-2337 | - |
dc.identifier.uri | http://hdl.handle.net/10722/349735 | - |
dc.description.abstract | This letter proposes an analytical framework for multi-reconfigurable intelligent surface (RIS) aided networks with limited backhaul capacity, where a simple symmetric structure is considered to explore the characteristics of multi-RIS systems with coherent transmissions. By using the Gamma distribution to model the composite RIS-aided channels, closed-form expressions in terms of the outage probability and the ergodic rate are derived. The theoretical results provide two design guidelines: 1) the minimum outage can be achieved by deploying the assisted RISs at certain locations; 2) the rate performance is bounded, and an optimal number of assisted RISs exists for rate maximization. Simulations verify our analysis and demonstrate the backhaul capacity is the bottleneck for multi-RIS systems. Compared with single-RIS systems, multi-RIS systems require a minimal backhaul capacity to ensure the performance gain. | - |
dc.language | eng | - |
dc.relation.ispartof | IEEE Wireless Communications Letters | - |
dc.subject | Ergodic rate | - |
dc.subject | limited backhaul | - |
dc.subject | multi-RIS | - |
dc.subject | optimal deployment | - |
dc.subject | outage probability | - |
dc.title | Downlink Multi-RIS Aided Transmission in Backhaul Limited Networks | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/LWC.2022.3174448 | - |
dc.identifier.scopus | eid_2-s2.0-85132516572 | - |
dc.identifier.volume | 11 | - |
dc.identifier.issue | 7 | - |
dc.identifier.spage | 1458 | - |
dc.identifier.epage | 1462 | - |
dc.identifier.eissn | 2162-2345 | - |