Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical Deployments
Reconfigurable Intelligent Surface (RIS) is a promising way to increase the coverage and capacity of existing and future wireless systems. For that, the RIS reflection coefficients need to be properly adjusted. However, cellular systems demand RIS adjustment algorithms to use low-complexity feedback...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10750815/ |
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| author | Arseny Poyda Ilya Burtakov Aleksey Kureev Evgeny Khorov |
| author_facet | Arseny Poyda Ilya Burtakov Aleksey Kureev Evgeny Khorov |
| author_sort | Arseny Poyda |
| collection | DOAJ |
| description | Reconfigurable Intelligent Surface (RIS) is a promising way to increase the coverage and capacity of existing and future wireless systems. For that, the RIS reflection coefficients need to be properly adjusted. However, cellular systems demand RIS adjustment algorithms to use low-complexity feedback such as signal power measurements. Moreover, the multipath signal propagation in urban cellular systems, especially in the sub-6 GHz band, dictates the necessity to consider the destructive interference of reflected and direct channels at the Mobile Station. This paper tackles these problems and proposes a fast hierarchical RIS configuration algorithm with two novel features. First, on each level of the hierarchy, the reflecting coefficients are adjusted to compensate for destructive interference of reflected and direct channels at the Mobile Station. Second, it relies on a novel approach to synthesizing 2D reflected beams with a given width and direction based on narrow beam phase stitching. The proposed algorithm showcases superior performance, surpassing existing solutions by up to 5 dB while requiring only 100 signal power measurements for the RIS with 4096 elements. |
| format | Article |
| id | doaj-art-63af4ba58f974d63a7a03d36dc89428e |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-63af4ba58f974d63a7a03d36dc89428e2024-11-26T00:01:25ZengIEEEIEEE Access2169-35362024-01-011217406617407710.1109/ACCESS.2024.349657010750815Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical DeploymentsArseny Poyda0https://orcid.org/0000-0002-0743-1255Ilya Burtakov1https://orcid.org/0000-0003-3802-9178Aleksey Kureev2https://orcid.org/0000-0001-8657-0773Evgeny Khorov3https://orcid.org/0000-0001-5541-4671Wireless Networks Laboratory, Institute for Information Transmission Problems of the Russian Academy of Sciences, Moscow, RussiaWireless Networks Laboratory, Institute for Information Transmission Problems of the Russian Academy of Sciences, Moscow, RussiaWireless Networks Laboratory, Institute for Information Transmission Problems of the Russian Academy of Sciences, Moscow, RussiaWireless Networks Laboratory, Institute for Information Transmission Problems of the Russian Academy of Sciences, Moscow, RussiaReconfigurable Intelligent Surface (RIS) is a promising way to increase the coverage and capacity of existing and future wireless systems. For that, the RIS reflection coefficients need to be properly adjusted. However, cellular systems demand RIS adjustment algorithms to use low-complexity feedback such as signal power measurements. Moreover, the multipath signal propagation in urban cellular systems, especially in the sub-6 GHz band, dictates the necessity to consider the destructive interference of reflected and direct channels at the Mobile Station. This paper tackles these problems and proposes a fast hierarchical RIS configuration algorithm with two novel features. First, on each level of the hierarchy, the reflecting coefficients are adjusted to compensate for destructive interference of reflected and direct channels at the Mobile Station. Second, it relies on a novel approach to synthesizing 2D reflected beams with a given width and direction based on narrow beam phase stitching. The proposed algorithm showcases superior performance, surpassing existing solutions by up to 5 dB while requiring only 100 signal power measurements for the RIS with 4096 elements.https://ieeexplore.ieee.org/document/10750815/Beam synthesisintelligent reflecting surfacereconfigurable intelligent surfacesub-6 GHz band |
| spellingShingle | Arseny Poyda Ilya Burtakov Aleksey Kureev Evgeny Khorov Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical Deployments IEEE Access Beam synthesis intelligent reflecting surface reconfigurable intelligent surface sub-6 GHz band |
| title | Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical Deployments |
| title_full | Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical Deployments |
| title_fullStr | Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical Deployments |
| title_full_unstemmed | Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical Deployments |
| title_short | Fast Wide Beam Adjustment of Reconfigurable Intelligent Surfaces in Practical Deployments |
| title_sort | fast wide beam adjustment of reconfigurable intelligent surfaces in practical deployments |
| topic | Beam synthesis intelligent reflecting surface reconfigurable intelligent surface sub-6 GHz band |
| url | https://ieeexplore.ieee.org/document/10750815/ |
| work_keys_str_mv | AT arsenypoyda fastwidebeamadjustmentofreconfigurableintelligentsurfacesinpracticaldeployments AT ilyaburtakov fastwidebeamadjustmentofreconfigurableintelligentsurfacesinpracticaldeployments AT alekseykureev fastwidebeamadjustmentofreconfigurableintelligentsurfacesinpracticaldeployments AT evgenykhorov fastwidebeamadjustmentofreconfigurableintelligentsurfacesinpracticaldeployments |