Reconfigurable Intelligent Surface-Aided Near-Field Communications for 6G: Opportunities and Challenges
dc.contributor.author | Mu, X | en_US |
dc.contributor.author | Xu, J | en_US |
dc.contributor.author | Liu, Y | en_US |
dc.contributor.author | Hanzo, L | en_US |
dc.date.accessioned | 2024-01-24T14:48:54Z | |
dc.date.issued | 2024-01-01 | en_US |
dc.identifier.issn | 1556-6072 | en_US |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/94176 | |
dc.description.abstract | Reconfigurable intelligent surface (RIS)-aided near-field communications are investigated. First, the necessity of investigating RIS-aided near-field communications and the advantages brought about by the unique spherical wave-based near-field propagation are discussed. Then, the family of patch array-based RISs and metasurface-based RISs is introduced along with respective near-field channel models. A pair of fundamental performance limits of RIS-aided near-field communications, namely, their power scaling law and effective degrees of freedom (EDOF), are analyzed for both patch array-based and metasurface-based RISs, which reveals the potential performance gains that can be achieved. Furthermore, associated near-field beam training and beamforming design issues are studied, where a two-stage hierarchical beam training approach and a low-complexity element-wise beamforming design are proposed for RIS-aided near-field communications. Finally, a suite of open research problems is highlighted for motivating future research. | en_US |
dc.relation.ispartof | IEEE Vehicular Technology Magazine | en_US |
dc.title | Reconfigurable Intelligent Surface-Aided Near-Field Communications for 6G: Opportunities and Challenges | en_US |
dc.type | Article | |
dc.identifier.doi | 10.1109/MVT.2023.3345608 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
qmul.funder | Towards Sustainable ICT: Sparse Ubiquitous Networks based on Reconfigurable Intelligent Surfaces::Engineering and Physical Sciences Research Council | en_US |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
School of Electronic Engineering and Computer Science Research Reports: 2008 - [51]
Electronic Engineering and Computer Science Research Reports from 2009 onwards