Performance Characterization of Continuous Reconfigurable Intelligent Surfaces
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911009444200448 |
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| author | Inwood, Amy S. Smith, Peter J. AlaaEldin, Mahmoud Matthaiou, Michail |
| author_facet | Inwood, Amy S. Smith, Peter J. AlaaEldin, Mahmoud Matthaiou, Michail |
| contents | We consider a reconfigurable intelligent surface (RIS) that can implement a phase rotation continuously over the whole surface rather than via a finite number of discrete elements. Such an RIS can be considered a design for future systems where advances in metamaterials make such an implementation feasible or as the limiting case where the number of elements in a traditional RIS increases in a given area. We derive the optimal RIS design for the single-user (SU) scenario assuming a line-of-sight (LoS) from the RIS to the base station (BS) and correlated Rayleigh fading for the other links. We also derive the associated optimal signal-to-noise ratio (SNR) and its mean, a bound on the mean spectral efficiency (SE), an approximation to the SNR outage probability and an approximation to the coefficient of variation for the investigation of channel hardening. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_14385 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Performance Characterization of Continuous Reconfigurable Intelligent Surfaces Inwood, Amy S. Smith, Peter J. AlaaEldin, Mahmoud Matthaiou, Michail Signal Processing We consider a reconfigurable intelligent surface (RIS) that can implement a phase rotation continuously over the whole surface rather than via a finite number of discrete elements. Such an RIS can be considered a design for future systems where advances in metamaterials make such an implementation feasible or as the limiting case where the number of elements in a traditional RIS increases in a given area. We derive the optimal RIS design for the single-user (SU) scenario assuming a line-of-sight (LoS) from the RIS to the base station (BS) and correlated Rayleigh fading for the other links. We also derive the associated optimal signal-to-noise ratio (SNR) and its mean, a bound on the mean spectral efficiency (SE), an approximation to the SNR outage probability and an approximation to the coefficient of variation for the investigation of channel hardening. |
| title | Performance Characterization of Continuous Reconfigurable Intelligent Surfaces |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2506.14385 |