基于无源可重构智能超表面的室内无线信号覆盖增强

doi:10.11959/j.issn.1000-436x.2022229

通信学报 ›› 2022, Vol. 43 ›› Issue (12): 32-44.doi: 10.11959/j.issn.1000-436x.2022229

• 专题：信息超材料在移动通信中的应用 • 上一篇下一篇

基于无源可重构智能超表面的室内无线信号覆盖增强

刘海霞, 易浩, 马向进, 乐舒瑶, 孔旭东, 马培, 曾宇鑫, 李龙

西安电子科技大学超高速电路设计与电磁兼容教育部重点实验室，陕西西安 710071

修回日期:2022-11-25 出版日期:2022-12-25 发布日期:2022-12-01
作者简介:刘海霞（1976– ），女，河北秦皇岛人，博士，西安电子科技大学副教授，主要研究方向为智能超材料、电路分析、无线能量传输与收集、场路协同设计
易浩（1988– ），男，湖南常德人，西安电子科技大学博士生，主要研究方向为毫米波雷达天线、超表面天线
马向进（1998– ），男，安徽阜阳人，西安电子科技大学博士生，主要研究方向为可编程超表面及其新体制雷达系统
乐舒瑶（1997– ），女，四川成都人，西安电子科技大学硕士生，主要研究方向为毫米波阵列天线、部分有源可重构反射阵
孔旭东（1997– ），男，甘肃平凉人，西安电子科技大学硕士生，主要研究方向为基于电磁超材料的电磁波调控、毫米波阵列天线优化设计
马培（1995– ），女，河南南阳人，西安电子科技大学硕士生，主要研究方向为吸波、透波一体化的频率选择表面的设计
曾宇鑫（1998– ），男，广东揭阳人，西安电子科技大学硕士生，主要研究方向为基于电磁超材料的电磁波调控、多频数字编码可重构超表面设计
李龙（1977– ），男，贵州安顺人，博士，西安电子科技大学教授，主要研究方向为智能超表面、超材料天线与微波器件、无线能量传输与收集、微波集成电路的电磁兼容与防护
基金资助:
国家自然科学基金资助项目(62288101);国家重点研发计划基金资助项目(2021YFA1401001);陕西省重点领域科技创新团队基金资助项目(2021TD-07);陕西省杰出青年科学基金资助项目(2019JC-15)

Indoor wireless signal coverage and enhancement based on passive reconfigurable intelligent metasurface

Haixia LIU, Hao YI, Xiangjin MA, Shuyao YUE, Xudong KONG, Pei MA, Yuxin ZENG, Long LI

Key Laboratory of High-Speed Circuit Design and EMC, Ministry of Education, Xidian University, Xi’an 710071, China

Revised:2022-11-25 Online:2022-12-25 Published:2022-12-01
Supported by:
The National Natural Science Foundation of China(62288101);The National Key Research and Development Program of China(2021YFA1401001);The Key Research and Development Program of Shaanxi for Science and Technology Innovation Team(2021TD-07);Outstanding Youth Science Foundation of Shaanxi Province(2019JC-15)

摘要/Abstract

摘要：

可重构智能超表面（RIS）是一种新型人工电磁材料，可灵活调控电磁波的频率、幅度、相位、极化、传播方向、波形等特性。在无线通信领域，可利用RIS重构无线通信信道，实现无线信号的盲区覆盖，提高通信质量。首先，概述了RIS技术的发展和研究现状，分析了RIS的关键技术和应用场景。然后，提出了一种新型无源RIS，通过无源编码和拼接原理实现了RIS口径可重构和波束可重构特性，具有低成本、低功耗、低复杂度的优点。最后，在实际室内环境下进行了基于无源RIS的室内无线信号盲区覆盖增强实验。通过仿真与实测对比，证明了无源可拼接超表面在无线通信补盲场景应用中的有效性。此外，针对5G/6G毫米波通信，设计了双层十字交叉振子无源RIS，应用到室内典型的L形走廊场景，验证了无源RIS对室内无线信号覆盖的增强效果。

关键词: 无源可重构智能超表面, 信道重构, 盲区覆盖, 无线通信

Abstract:

Reconfigurable intelligent metasurface (RIS) is a new type of artificial electromagnetic metamaterial, which can control the frequency, amplitude, phase, polarization, propagation direction and wave type of electromagnetic wave flexibly.In the field of wireless communication, RIS can be used to reconstruct the wireless communication channel to achieve blind coverage of wireless signals and improve the communication quality.First, the development and research status of RIS, the key technologies and application scenarios of RIS were summarized and analyzed.Then, a new passive RIS was proposed to realize the characteristics of the aperture reconfiguration and beam reconfiguration through passive coding and splicing principle, which had the advantages of low cost, low power consumption and low complexity.Finally, the blind area coverage enhancement experiment of indoor wireless signal based on passive reflection metasurface was carried out.The effectiveness of passive splicing metasurface in wireless communication blind coverage scenarios was proved by comparison between simulation and field measurement.In addition, for 5G/6G millimeter wave communication, the passive RIS with double-layer cross dipole elements was designed and applied to typical indoor L-shaped corridor scene to verify the enhancement effect of indoor wireless signal coverage.

Key words: passive reconfigurable intelligent metasurface, channel reconstruction, blind zone coverage, wireless communication

中图分类号:

TN92

刘海霞, 易浩, 马向进, 乐舒瑶, 孔旭东, 马培, 曾宇鑫, 李龙. 基于无源可重构智能超表面的室内无线信号覆盖增强[J]. 通信学报, 2022, 43(12): 32-44.

Haixia LIU, Hao YI, Xiangjin MA, Shuyao YUE, Xudong KONG, Pei MA, Yuxin ZENG, Long LI. Indoor wireless signal coverage and enhancement based on passive reconfigurable intelligent metasurface[J]. Journal on Communications, 2022, 43(12): 32-44.

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参考文献 23

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子阵	波束指向	平均相位梯度	比特符号
子阵0	41.7°	22.3°	0
子阵1	62°	29.6°	1

V_min排列方式	θ理论值	θ全波仿真值
[0]	41.7°	41.9°
[00010]	44.8°	44.8°
[01]	49.3°	49.4°
[11101]	56°	56°
[1]	62.3°	62°

基于无源可重构智能超表面的室内无线信号覆盖增强

Indoor wireless signal coverage and enhancement based on passive reconfigurable intelligent metasurface

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