An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation
Recently, a reconfigurable intelligent surface (RIS) that provides alternative wireless propagation paths (by reflecting an electromagnetic wave from a base station in desired directions) has attracted attention as a key facilitating technology for Beyond 5G and 6G wireless communications. This pape...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9881509/ |
| _version_ | 1811204374521708544 |
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| author | Jungi Jeong Jun Hwa Oh Seung Yoon Lee Yuntae Park Sang-Hyuk Wi |
| author_facet | Jungi Jeong Jun Hwa Oh Seung Yoon Lee Yuntae Park Sang-Hyuk Wi |
| author_sort | Jungi Jeong |
| collection | DOAJ |
| description | Recently, a reconfigurable intelligent surface (RIS) that provides alternative wireless propagation paths (by reflecting an electromagnetic wave from a base station in desired directions) has attracted attention as a key facilitating technology for Beyond 5G and 6G wireless communications. This paper presents an improved path-loss model suitable for RIS-aided wireless communications. Unlike previously reported RIS path-loss models, the proposed model considers more practical electromagnetic phenomena (e.g., the incident and reflected gain patterns of the RIS unit cell, the effective received power at the RIS, the reflection phase error of each unit cell, and the specular reflection loss), by applying rigorous analysis. Furthermore, the accuracy of the proposed path-loss model is validated by extensive experimental measurements using our developed RIS prototype. The prototype consists of 576 phase-reconfigurable unit cells operating at 29 GHz, each of which features two PIN diodes. Each PIN diode is independently controlled to produce the desired phase distributions on the RIS. It is shown that the calculated received power in the proposed path-loss model matches the measurement results within a 1 dB margin across various practical test environments. |
| first_indexed | 2024-04-12T03:12:11Z |
| format | Article |
| id | doaj.art-5d922afa834c488f88a7b6de6623e276 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T03:12:11Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-5d922afa834c488f88a7b6de6623e2762022-12-22T03:50:18ZengIEEEIEEE Access2169-35362022-01-0110980659807810.1109/ACCESS.2022.32051179881509An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental ValidationJungi Jeong0https://orcid.org/0000-0002-6118-4494Jun Hwa Oh1Seung Yoon Lee2Yuntae Park3Sang-Hyuk Wi4Samsung Research, Samsung Electronics Company, Seoul, South KoreaSamsung Research, Samsung Electronics Company, Seoul, South KoreaSamsung Research, Samsung Electronics Company, Seoul, South KoreaSamsung Research, Samsung Electronics Company, Seoul, South KoreaSamsung Research, Samsung Electronics Company, Seoul, South KoreaRecently, a reconfigurable intelligent surface (RIS) that provides alternative wireless propagation paths (by reflecting an electromagnetic wave from a base station in desired directions) has attracted attention as a key facilitating technology for Beyond 5G and 6G wireless communications. This paper presents an improved path-loss model suitable for RIS-aided wireless communications. Unlike previously reported RIS path-loss models, the proposed model considers more practical electromagnetic phenomena (e.g., the incident and reflected gain patterns of the RIS unit cell, the effective received power at the RIS, the reflection phase error of each unit cell, and the specular reflection loss), by applying rigorous analysis. Furthermore, the accuracy of the proposed path-loss model is validated by extensive experimental measurements using our developed RIS prototype. The prototype consists of 576 phase-reconfigurable unit cells operating at 29 GHz, each of which features two PIN diodes. Each PIN diode is independently controlled to produce the desired phase distributions on the RIS. It is shown that the calculated received power in the proposed path-loss model matches the measurement results within a 1 dB margin across various practical test environments.https://ieeexplore.ieee.org/document/9881509/Metasurfacemillimeter wavepath-loss modelreconfigurable reflectorreconfigurable intelligent surface (RIS)wireless communication system |
| spellingShingle | Jungi Jeong Jun Hwa Oh Seung Yoon Lee Yuntae Park Sang-Hyuk Wi An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation IEEE Access Metasurface millimeter wave path-loss model reconfigurable reflector reconfigurable intelligent surface (RIS) wireless communication system |
| title | An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation |
| title_full | An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation |
| title_fullStr | An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation |
| title_full_unstemmed | An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation |
| title_short | An Improved Path-Loss Model for Reconfigurable-Intelligent-Surface-Aided Wireless Communications and Experimental Validation |
| title_sort | improved path loss model for reconfigurable intelligent surface aided wireless communications and experimental validation |
| topic | Metasurface millimeter wave path-loss model reconfigurable reflector reconfigurable intelligent surface (RIS) wireless communication system |
| url | https://ieeexplore.ieee.org/document/9881509/ |
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