Space-frequency-polarization-division multiplexed wireless communication system using anisotropic space-time-coding digital metasurface  

作　　者：Jun Chen Ke Xiangyu Chen Wankai Tang Ming Zheng Chen Lei Zhang Li Wang Jun Yan Dai Jin Yang Jun Wei Zhang Lijie Wu Qiang Cheng Shi Jin Tie Jun Cui 

机构地区：[1]State Key Laboratory of Millimeter Waves,Southeast University,Nanjing 210096,China [2]Institute of Electromagnetic Space,Southeast University,Nanjing 210096,China [3]Frontiers Science Center for Mobile Information Communication and Security,Southeast University,Nanjing 210096,China [4]National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China [5]Southeast University Wuxi Campus,Wuxi 214061,China

出　　处：《National Science Review》2022年第11期144-155,共12页国家科学评论（英文版）

基　　金：supported by the Basic Scientific Center of Information Metamaterials of the National Natural Science Foundation of China (62288101);the National Key Research and Development Program of China (2017YFA0700201,2017YFA0700202, 2017YFA0700203 and 2018YFA0701904);the National Natural Science Foundation of China (61731010);the Overseas Expertise Introduction Project for Discipline Innovation (111 Project)(111-2-05);the Jiangsu Province Frontier Leading Technology Basic Research Project (BK20212002);Fundamental Research Funds for the Central Universities(2242022k30004);the China Postdoctoral Science Foundation(2020M680062);the National Postdoctoral Program for Innovative Talents (BX2021062);the National Science Foundation of China for Distinguished Young Scholars (61625106)

摘　　要：In the past few years,wireless communications based on digital coding metasurfaces have gained research interest owing to their simplified architectures and low cost.However,in most of the metasurface-based wireless systems,a single-polarization scenario is used,limiting the channel capacities.To solve the problem,multiplexing methods have been adopted,but the system complexity is inevitably increased.Here,a space-frequency-polarization-division multiplexed wireless communication system is proposed using an anisotropic space-time-coding digital metasurface.By separately designing time-varying control voltage sequences for differently oriented varactor diodes integrated on the metasurface,we achieve frequency-polarization-division multiplexed modulations.By further introducing different time-delay gradients to the control voltage sequences in two polarization directions,we successfully obtain space-frequency-polarization-division multiplexed modulations to realize a wireless communication system with a new architecture.The new communication system is designed with compact dual-polarized meta-elements,and can improve channel capacity and space utilization.Experimental results demonstrate the high-performance and real-time transmission capability of the proposed communication system,confirming its potential application in multiple-user collaborative wireless communications.

关 键 词：polarization-division multiplexing frequency-division multiplexing space-division multiplexing space-time coding wireless communication 

分 类 号：TN92[电子电信—通信与信息系统]