Wireless Communications and Applications Above 100 GHz: Opportunities and Challenges for 6G and Beyond
Wireless Communications and Applications Above 100 GHz: Opportunities and Challenges for 6G and Beyond
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DOI：
10.1109/access.2019.2921522
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发表时间：
2019-01-01
期刊：
影响因子：
3.9
通讯作者：
Trichopoulos, Georgios C.
中科院分区：
文献类型：
--
作者：
Rappaport, Theodore S.;Xing, Yunchou;Trichopoulos, Georgios C.
从100 GHz到3 THz的频率是下一代无线通信系统的有前途的频段，因为有大量未使用和未开发的频谱。这些频率还提供了革命性应用的潜力，这些应用将通过新思维以及设备、电路、软件、信号处理和系统的进步而成为可能。本文描述了100 GHz以上无线通信和传感应用的许多技术挑战和机遇，并提出了一些有前途的发现，新方法和最新成果，将有助于第六代（6G）无线网络的开发和实施。本文展示了最新的监管和标准机构规则，这些规则预期100 GHz以上的无线产品和服务，并说明了无线认知、超精确定位、传感和成像的可行性。本文还介绍了一些方法和结果，表明由于天线增益能够克服空气引起的衰减，因此将支持800 GHz以上的长距离移动的通信，并介绍了降低计算复杂性和简化信号处理的方法。用于自适应天线阵列，通过利用狭义相对论在过采样天线阵列中创建一个静锥区，从而提高数字相控阵天线的性能。此外，新的结果，使洞察到功率有效的波束控制算法，和新的传播和分区损失模型以上100 GHz的，并提出了有前途的成像，阵列处理和位置定位的结果。太赫兹频率的空间一致性，信道建模的一个重要组成部分，认为在空间上的微小变化和相关性的实施，也进行了讨论。本文首次深入探讨了太赫兹无线产品和应用的广泛应用，并提供了如何在几个问题领域降低功耗和提高性能的方法，提供了早期证据，表明太赫兹技术是引人注目的，可用于未来的无线通信。
Frequencies from 100 GHz to 3 THz are promising bands for the next generation of wireless communication systems because of the wide swaths of unused and unexplored spectrum. These frequencies also offer the potential for revolutionary applications that will be made possible by new thinking, and advances in devices, circuits, software, signal processing, and systems. This paper describes many of the technical challenges and opportunities for wireless communication and sensing applications above 100 GHz, and presents a number of promising discoveries, novel approaches, and recent results that will aid in the development and implementation of the sixth generation (6G) of wireless networks, and beyond. This paper shows recent regulatory and standard body rulings that are anticipating wireless products and services above 100 GHz and illustrates the viability of wireless cognition, hyper-accurate position location, sensing, and imaging. This paper also presents approaches and results that show how long distance mobile communications will be supported to above 800 GHz since the antenna gains are able to overcome air-induced attenuation, and present methods that reduce the computational complexity and simplify the signal processing used in adaptive antenna arrays, by exploiting the Special Theory of Relativity to create a cone of silence in over-sampled antenna arrays that improve performance for digital phased array antennas. Also, new results that give insights into power efficient beam steering algorithms, and new propagation and partition loss models above 100 GHz are given, and promising imaging, array processing, and position location results are presented. The implementation of spatial consistency at THz frequencies, an important component of channel modeling that considers minute changes and correlations over space, is also discussed. This paper offers the first in-depth look at the vast applications of THz wireless products and applications and provides approaches for how to reduce power and increase performance across several problem domains, giving early evidence that THz techniques are compelling and available for future wireless communications.