标题： 最近大规模MIMO架构技术的高层比较 显示英文标题

标题： A High-Level Comparison of Recent Technologies for Massive MIMO Architectures

摘要： 自从引入大规模MIMO（mMIMO）以来，设计具有可行复杂度的收发器一直是一个具有挑战性的问题。 最初，人们认为在这方面的主要问题是整体射频成本。 然而，随着mMIMO越来越成为未来无线网络的关键技术，人们意识到射频成本只是众多实现挑战和设计权衡之一。 在本文中，我们介绍了、分析并比较了各种新颖的mMIMO架构，考虑了如智能表面辅助和Rotman透镜为基础的架构等最新出现的技术。 这些架构与传统的全数字（FD）和混合模拟-数字波束成形（HADB）方法进行了比较。 为了实现公平的比较，我们考虑了各种硬件缺陷和损耗，并利用了一种新颖的通用信号预编码算法。 基于我们的深入研究，我们得出了各种mMIMO架构的通用效率与质量权衡。 我们发现，在典型的蜂窝通信环境中，反射/传输阵列为基础的架构表现出最佳的整体权衡。 此外，我们表明，在定性排名中，所考虑架构的功率效率与频率范围无关。 显示英文摘要

摘要： Since the introduction of massive MIMO (mMIMO), the design of a transceiver with feasible complexity has been a challenging problem. Initially, it was believed that the main issue in this respect is the overall RF-cost. However, as mMIMO is becoming more and more a key technology for future wireless networks, it is realized, that the RF-cost is only one of many implementational challenges and design trade-offs. In this paper, we present, analyze and compare various novel mMIMO architectures, considering recent emerging technologies such as intelligent surface-assisted and Rotman lens based architectures. These are compared to the conventional fully digital (FD) and hybrid analog-digital beamforming (HADB) approaches. To enable a fair comparison, we account for various hardware imperfections and losses and utilize a novel, universal algorithm for signal precoding. Based on our thorough investigations, we draw a generic efficiency to quality trade-off for various mMIMO architectures. We find that in a typical cellular communication setting the reflect/transmit array based architectures sketch the best overall trade-off. Further, we show that in a qualitative ranking the power efficiency of the considered architectures is independent of the frequency range.