Space-Time-Coding Digital Metasurfaces for New-Architecture Wireless Communications

Space-time-coding (STC) digital metasurfaces have attracted great research interests due to their outstanding capabilities of manipulating electromagnetic (EM) waves and modulating information in various domains, which have been extensively studied to control the spatial and spectral distributions of EM waves. In this paper, we present a compact review of some new-architecture wireless communication systems based on the STC digital metasurfaces, which have the advantages of low cost, low complexity, low power consumption and high efficiency, and provide candidate technologies for future 6G wireless communication networks.