  Reconfigurable meta-surface (RMS) is proposed as a very promising and novel
technology, which is composed of a large number of low-cost passive elements,
and can achieve passive beamforming by controlling the amplitude and phase of
incident electromagnetic (EM) waves. Therefore, in order to solve the
challenges of high power consumption and high cost of existing base stations
(BSs), we propose a low-cost and low-power consumption transmissive RMS
multi-antenna system in this paper. Specifically, we first provide an overview
of the transmissive RMS multi-antenna system, including its advantages, network
architecture, transmission mechanism, modulation principle, channel model and
channel estimation technique. Then, we address transceiver design and
optimization for downlink (DL) and uplink (UL), and some numerical results are
also given to verify the effectiveness of the proposed algorithm. Finally,
several potential research directions of the transmissive RMS multi-antenna
system are given to inspire further investigation in future work.
