基于信息超表面的无线通信（特邀）

信息超表面由于其强大的处理空间电磁波的能力，成为国内外物理和信息领域的研究热点之一。文中主要介绍信息超表面在无线通信领域的一系列研究进展。信息超表面能实时操控电磁波及直接处理数字编码信息，并进一步对信息进行感知、理解，甚至记忆、学习和认知，这使其在无线通信领域展现出巨大潜能。文中首先介绍信息超表面在承担无线中继职能时所涉及的信道建模研究进展、以及其对信道的改善作用；其次介绍信息超表面在新体制发射机中的应用，通过对入射到信息超表面上的载波进行幅度或相位调制，实现了多种简化的发射机架构。此外，文中还介绍了利用信息超表面近场、远场以及散射场等信息，实现了多种新型无线通信系统。最后，文章对基于信息超表面的无线通信进行了总结和展望。

Wireless communications based on information metasurfaces (Invited)

Information metasurfaces have become one of the research hotspots in the field of physics and information, because of the ability of manipulating electromagnetic waves. A series of research progress in the field of wireless communications based on information metasurfaces was introduced. Information metasurface can manipulate electromagnetic waves in real time and directly process digital coding information, and can further perceive, understand, even memorize, learn and recognize information, which makes it show great potential in the field of wireless communications. Firstly, the research progress of channel modeling was introduced and the channel improvement that information metasurfaces could achieve when they worked as a wireless relay. Secondly, the application of information metasurface in the new transmitter system was also introduced, which modulated the amplitude or phase of the carrier waves. Thus several simplified transmitter architectures could be realized. Thirdly, the realization of several new wireless communication systems using the information of the near field, far field and scattering field of the information metasurface was introduced. Finally, the future wireless communication based on information metasurface was summarized and prospected.