论文标题

最近的大型MIMO架构技术的高级比较

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

论文作者

Rosenberger, Hans, Gäde, Bernhard, Bereyhi, Ali, Ahmed, Doaa, Jamali, Vahid, Müller, Ralf R., Fischer, Georg, He, Gaoning, Debbah, Mérouane

论文摘要

自从引入大型MIMO(MMIMO)以来,具有可行复杂性的收发器的设计一直是一个挑战性的问题。最初,人们认为这方面的主要问题是整体RF成本。但是,随着MMIMO越来越成为未来无线网络的关键技术,人们已经意识到,RF-COST只是许多实施挑战和设计权衡中的一种。在本文中,考虑到最近的新兴技术,例如智能的表面辅助和基于Rotman镜头的架构,我们介绍,分析和比较各种新型MMIMO架构。将这些与常规的全数字(FD)和混合模拟数字波束(HADB)方法进行比较。为了进行公平的比较,我们说明了各种硬件缺陷和损失,并利用一种新颖的通用算法进行信号预码。根据我们的彻底调查,我们为各种MMIMO架构的质量折衷提出了一般的效率。我们发现,在典型的蜂窝通信设置基于反射/传输阵列的体系结构绘制最佳总体权衡。此外,我们表明,在定性排名中,所考虑的体系结构的功率效率与频率范围无关。

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.

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