RIS Assisted Near Field Communication in Sub-6 GHz Band: Experimental Perspective

IF 4.4 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-07-16 DOI:10.1109/LCOMM.2025.3576503

Chandresh Dhote;Anamika Singh;Prabhat Kumar Sharma

引用次数: 0

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

$\times 508$

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.

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在sub - 6ghz频段RIS辅助近场通信：实验视角

针对sub- 6ghz频段的近场场景，实现并优化了可重构智能表面（RIS）辅助通信系统的测试平台。RIS具有400个单元的反射阵列，尺寸为508 mm $\times 508$ mm（孔径为718.3 mm，约$8.97\lambda \times 8.97\lambda $在5.3 GHz），采用低成本FR-4材料和PIN二极管构建，实现1位相位控制。该系统工作在近场区域（弗劳恩霍夫距离$d_{F}\approx 18.2$ m），可以操纵球面波前，在室内环境中实现精确的波束转向和信号增强。实验表明，接收功率增益为12-15 dB，多角度波束形成稳定，无线通信峰值吞吐量为36.70 Mbps，信噪比（SINR）为27.22 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

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.