论文标题
可重新配置的折射表面：一种节能方法
Reconfigurable Refractive Surfaces: An Energy-Efficient Way to Holographic MIMO
论文作者
论文摘要
全息多重输入多重输出（HMIMO）将大量的天线元素集成到紧凑的空间中以实现空间连续的光圈，在未来的无线网络中起着重要作用。有了许多天线元件，由于无法接受的功耗，很难通过分阶段阵列实施HMIMO。为了解决这个问题，由于表面没有昂贵的相位变速器，因此可重新配置的折射表面（RRS）是Hmimo的能源有效推动力。与传统的元整日作为被动继电器，RRs用作传输天线，远场近似不再存在，敦促新的性能分析框架。在这封信中，我们首先得出了基于RRS的单用户下行链路系统的数据速率，然后将其功耗与分阶段阵列进行比较。仿真结果验证了我们的分析，并表明RRS是用于HMIMO的一种节能方法。
Holographic Multiple Input Multiple Output (HMIMO), which integrates massive antenna elements into a compact space to achieve a spatially continuous aperture, plays an important role in future wireless networks. With numerous antenna elements, it is hard to implement the HMIMO via phased arrays due to unacceptable power consumption. To address this issue, reconfigurable refractive surface (RRS) is an energy efficient enabler of HMIMO since the surface is free of expensive phase shifters. Unlike traditional metasurfaces working as passive relays, the RRS is used as transmit antennas, where the far-field approximation does not hold anymore, urging a new performance analysis framework. In this letter, we first derive the data rate of an RRS-based single-user downlink system, and then compare its power consumption with the phased array. Simulation results verify our analysis and show that the RRS is an energy-efficient way to HMIMO.
