Future wireless networks are expected to evolve towards an intelligent and
software reconfigurable paradigm enabling ubiquitous communications between
humans and mobile devices. They will be also capable of sensing, controlling,
and optimizing the wireless environment to fulfill the visions of low-power,
high-throughput, massively-connected, and low-latency communications. A key
conceptual enabler that is recently gaining increasing popularity is the
Holographic Multiple Input Multiple Output Surface (HMIMOS) that refers to a
low-cost transformative wireless planar structure comprising of sub-wavelength
metallic or dielectric scattering particles, which is capable of impacting
electromagnetic waves according to desired objectives. In this article, we
provide an overview of HMIMOS communications by introducing the available
hardware architectures for reconfigurable such metasurfaces and their main
characteristics, as well as highlighting the opportunities and key challenges
in designing HMIMOS-enabled communications.

本文介绍了未来无线网络的一种智能化、可重新配置的模式，及其关键概念 Holographic Multiple Input Multiple Output Surface（HMIMOS）的信息。该模式采用亚波长金属或介电散射粒子製作成的 HMIMOS 面板，可以实现低成本的无线通信，具有优化电磁波传输、低功耗、高吞吐量、低延迟等特点。本文综述了该裝置的特点、机会和挑战。