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Experimental Demonstrations of High-Capacity THz-Wireless Transmission Systems for Beyond 5G
IEEE Communications Magazine ( IF 11.2 ) Pub Date : 2020-11-01 , DOI: 10.1109/mcom.001.2000306
Carlos Castro , Robert Elschner , Thomas Merkle , Colja Schubert , Ronald Freund

Using the concept of a "THz-wireless fiber extender," we can combine the flexibility of wireless networks with the high capacity of fiber optic communication. The availability of a large, contiguous bandwidth in the frequency band around 300 GHz creates the opportunity to seamlessly interconnect coherent THz-wireless and fiber optic transceiver frontends using a transparent, analog baseband interface. In this article, we discuss this concept in more detail and report on the recent demonstration of a real-time, short-range THz-wireless fiber extender with 100 Gb/s net capacity. This combined fiber optic/THz-wireless transmission system is operated by a high-speed fiber optic real-time modem, which is capable of compensating the channel impairments of both the optical and THz-wireless links. In addition, we discuss the potential of THz-wireless links to achieve long-range transmission distances by reporting on the operation of a 500-m-long line-of-sight THz-wireless outdoor link in Berlin, Germany. We analyze the effect of weather conditions on the transmission performance and determine the maximum physical layer net data rate of the system by means of various modulation formats and symbol rates. Finally, we summarize all of our recent high-capacity experiments using THz-wireless transmission, including a field trial with a 1-km-long link, and compare our results to theoretical limits and achieved data rates in the laboratory.

中文翻译:

用于超 5G 的大容量太赫兹无线传输系统的实验演示

使用“太赫兹无线光纤扩展器”的概念,我们可以将无线网络的灵活性与光纤通信的高容量结合起来。在 300 GHz 附近的频带中提供大的、连续的带宽,这为使用透明的模拟基带接口无缝互连相干的太赫兹无线和光纤收发器前端创造了机会。在本文中,我们更详细地讨论了这个概念,并报告了最近演示的具有 100 Gb/s 净容量的实时、短距离 THz 无线光纤扩展器。这种光纤/太赫兹无线组合传输系统由高速光纤实时调制解调器操作,能够补偿光链路和太赫兹无线链路的信道损伤。此外,我们通过报告德国柏林 500 米长视距 THz 无线室外链路的运行情况,讨论了 THz 无线链路实现远距离传输距离的潜力。我们分析了天气条件对传输性能的影响,并通过各种调制格式和符号率来确定系统的最大物理层净数据速率。最后,我们总结了我们最近使用太赫兹无线传输进行的所有高容量实验,包括使用 1 公里长链路的现场试验,并将我们的结果与理论极限和实验室实现的数据速率进行比较。我们分析了天气条件对传输性能的影响,并通过各种调制格式和符号率来确定系统的最大物理层净数据速率。最后,我们总结了我们最近使用太赫兹无线传输进行的所有高容量实验,包括使用 1 公里长链路的现场试验,并将我们的结果与理论极限和实验室实现的数据速率进行比较。我们分析了天气条件对传输性能的影响,并通过各种调制格式和符号率来确定系统的最大物理层净数据速率。最后,我们总结了我们最近使用太赫兹无线传输进行的所有高容量实验,包括使用 1 公里长链路的现场试验,并将我们的结果与理论极限和实验室实现的数据速率进行比较。
更新日期:2020-11-01
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