A New Wireless Communication Paradigm through Software-controlled Metasurfaces
Foundation for Research and Technology - Hellas (FORTH)（希腊研究与技术基金会）；Georgia Institute of Technology, School of Electrical and Computer Engineering（佐治亚理工学院电气与计算机工程学院）；University of Cyprus, Computer Science Department（塞浦路斯大学计算机科学系）
Christos Liaskos, Shuai Nie, Ageliki Tsioliaridou, Andreas Pitsillides, Sotiris Ioannidis, Ian Akyildiz
备注：
Paper accepted for publication at the IEEE Communications Magazine. This work was funded by the European Union via the Horizon 2020: Future Emerging Topics call (FETOPEN-RIA), grant EU736876, project VISORSURF: HyperSurfaces-A Hardware Platform for Software-driven Functional Metasurfaces (http://www.visorsurf.eu/)
Electromagnetic waves undergo multiple uncontrollable alterations as they propagate within a wireless environment. Free space path loss, signal absorption, as well as reflections, refractions and diffractions caused by physical objects within the environment highly affect the performance of wireless communications. Currently, such effects are intractable to account for and are treated as probabilistic factors. The paper proposes a radically different approach, enabling deterministic, programmable control over the behavior of the wireless environments. The key-enabler is the so-called HyperSurface tile, a novel class of planar meta-materials which can interact with impinging electromagnetic waves in a controlled manner. The HyperSurface tiles can effectively re-engineer electromagnetic waves, including steering towards any desired direction, full absorption, polarization manipulation and more. Multiple tiles are employed to coat objects such as walls, furniture, overall, any objects in the indoor and outdoor environments. An external software service calculates and deploys the optimal interaction types per tile, to best fit the needs of communicating devices. Evaluation via simulations highlights the potential of the new concept.
Metasurfaces-Enabled Wave Computing for Future Wireless Systems: Opportunities and Challenges
Institute for Communication Systems, University of Surrey（萨里大学通信系统研究所）；Universidad de Oviedo（奥维耶多大学）；National and Kapodistrian University of Athens（雅典国立卡波迪斯特里亚斯大学）；University of Illinois Chicago（伊利诺伊大学芝加哥分校）；Centre for Wireless Innovation, Queen’s University Belfast（贝尔法斯特女王大学无线创新中心）
Beyond the Limits of Rigid Arrays: Flexible Intelligent Metasurfaces for Next-Generation Wireless Networks
University College Dublin（都柏林大学学院）；New York University Abu Dhabi (NYUAD)（纽约大学阿布扎比分校）；Université Paris-Saclay, CNRS, CentraleSupélec, Laboratoire des Signaux et Systèmes（巴黎萨克雷大学、法国国家科学研究中心、中央苏佩莱克学院、信号与系统实验室）；King’s College London, Centre for Telecommunications Research – Department of Engineering（伦敦国王学院，电信研究中心-工程系）
Metasurfaces-Integrated Wireless Neural Networks for Lightweight Over-The-Air Edge Inference
Department of Informatics and Telecommunications, National and Kapodistrian University of Athens（信息与电信系，雅典国家与卡波迪斯蒂亚大学）；National Inter-University Consortium for Telecommunications (CNIT)（电信国家大学联合体（CNIT））；DIAG Department, Sapienza University of Rome（罗马萨皮恩扎大学DIAG系）；DIET Department, Sapienza University of Rome（罗马萨皮恩扎大学DIET系）
FollowSpot: Enhancing Wireless Communications via Movable Ceiling-Mounted Metasurfaces
The Chinese University of Hong Kong (Shenzhen)（香港中文大学（深圳））；Shenzhen Research Institute of Big Data, China（深圳大数据研究院）；National University of Singapore（新加坡国立大学）
A Survey on Stacked Intelligent Metasurfaces: Fundamentals, Recent Advances, and Challenges
University of Luxembourg（卢森堡大学）；National Institute of Technology Warangal（瓦朗加尔国立技术学院）；National and Kapodistrian University of Athens（雅典国家与卡波迪斯特里阿斯大学）；University of Illinois Chicago（伊利诺伊大学芝加哥分校）
Channel Estimation for Downlink Communications Based on Dynamic Metasurface Antennas
Federal University of Ceará（塞阿拉联邦大学）；Federal Institute of Education, Science and Technology of Ceará（塞阿拉联邦教育科学与技术学院）；University of California at Irvine（加州大学尔湾分校）
本文提出一种基于PARAFAC分解的简单信道估计方案，用于MISO-OFDM系统中的下行通信，通过迭代算法分离无线信道和波导传播向量，实现无需 pilot 信号的高效估计。
Holographic Communication via Recordable and Reconfigurable Metasurface
National Key Laboratory of Wireless Communications, University of Electronic Science and Technology of China（电子科技大学无线通信国家重点实验室）；University of Wollongong（伍伦贡大学）
