{"title":"在sub - 6ghz频段RIS辅助近场通信:实验视角","authors":"Chandresh Dhote;Anamika Singh;Prabhat Kumar Sharma","doi":"10.1109/LCOMM.2025.3576503","DOIUrl":null,"url":null,"abstract":"A testbed for a reconfigurable intelligent surface (RIS) assisted communication system is implemented and optimized for near-field scenarios in the sub-6 GHz band. The RIS features a 400-element reflectarray, measuring 508 mm <inline-formula> <tex-math>$\\times 508$ </tex-math></inline-formula> mm (aperture diameter 718.3 mm, approximately <inline-formula> <tex-math>$8.97\\lambda \\times 8.97\\lambda $ </tex-math></inline-formula> at 5.3 GHz), built with low-cost FR-4 material and PIN diodes to achieve 1-bit phase control. Operating within the near-field region (Fraunhofer distance <inline-formula> <tex-math>$d_{F}\\approx 18.2$ </tex-math></inline-formula> m), the system manipulates spherical wavefronts to enable precise beam steering and signal enhancement significantly in indoor environments. Experiments demonstrate a 12-15 dB gain in received power, stable beamforming at multiple angles, and wireless communication with a peak throughput of 36.70 Mbps and signal-to-interference-plus-noise ratio (SINR) of 27.22 dB.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"29 8","pages":"1814-1818"},"PeriodicalIF":4.4000,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"RIS Assisted Near Field Communication in Sub-6 GHz Band: Experimental Perspective\",\"authors\":\"Chandresh Dhote;Anamika Singh;Prabhat Kumar Sharma\",\"doi\":\"10.1109/LCOMM.2025.3576503\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A testbed for a reconfigurable intelligent surface (RIS) assisted communication system is implemented and optimized for near-field scenarios in the sub-6 GHz band. The RIS features a 400-element reflectarray, measuring 508 mm <inline-formula> <tex-math>$\\\\times 508$ </tex-math></inline-formula> mm (aperture diameter 718.3 mm, approximately <inline-formula> <tex-math>$8.97\\\\lambda \\\\times 8.97\\\\lambda $ </tex-math></inline-formula> at 5.3 GHz), built with low-cost FR-4 material and PIN diodes to achieve 1-bit phase control. Operating within the near-field region (Fraunhofer distance <inline-formula> <tex-math>$d_{F}\\\\approx 18.2$ </tex-math></inline-formula> m), the system manipulates spherical wavefronts to enable precise beam steering and signal enhancement significantly in indoor environments. Experiments demonstrate a 12-15 dB gain in received power, stable beamforming at multiple angles, and wireless communication with a peak throughput of 36.70 Mbps and signal-to-interference-plus-noise ratio (SINR) of 27.22 dB.\",\"PeriodicalId\":13197,\"journal\":{\"name\":\"IEEE Communications Letters\",\"volume\":\"29 8\",\"pages\":\"1814-1818\"},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2025-07-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Communications Letters\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/11082293/\",\"RegionNum\":3,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"TELECOMMUNICATIONS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/11082293/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
RIS Assisted Near Field Communication in Sub-6 GHz Band: Experimental Perspective
A testbed for a reconfigurable intelligent surface (RIS) assisted communication system is implemented and optimized for near-field scenarios in the sub-6 GHz band. The RIS features a 400-element reflectarray, measuring 508 mm $\times 508$ mm (aperture diameter 718.3 mm, approximately $8.97\lambda \times 8.97\lambda $ at 5.3 GHz), built with low-cost FR-4 material and PIN diodes to achieve 1-bit phase control. Operating within the near-field region (Fraunhofer distance $d_{F}\approx 18.2$ m), the system manipulates spherical wavefronts to enable precise beam steering and signal enhancement significantly in indoor environments. Experiments demonstrate a 12-15 dB gain in received power, stable beamforming at multiple angles, and wireless communication with a peak throughput of 36.70 Mbps and signal-to-interference-plus-noise ratio (SINR) of 27.22 dB.
期刊介绍:
The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.