The TeraNova platform: An integrated testbed for ultra-broadband wireless communications at true Terahertz frequencies
The TeraNova platform: An integrated testbed for ultra-broadband wireless communications at true Terahertz frequencies
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DOI：
10.1016/j.comnet.2020.107370
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
Priyangshu Sen;D. Pados;S. Batalama;E. Einarsson;J. Bird;J. Jornet
中科院分区：
文献类型：
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作者：
Priyangshu Sen;D. Pados;S. Batalama;E. Einarsson;J. Bird;J. Jornet
太赫兹(THz)频段(0.1太赫兹到10太赫兹)通信被认为是满足对更快、更普遍的无线通信网络的需求的关键技术。多年来，缺乏紧凑、快速和有效的方法来产生、调制、检测和解调THz频段信号，限制了这种通信系统的可行性。最近，不同设备技术的重大进展终于缩小了所谓的太赫兹差距。目前，已经开发了亚太赫兹频率的通信试验台，即在与毫米波通信系统的边界或附近。然而，需要更高的载频及其相关带宽来满足对更高数据速率的需求。本文介绍了第一个THz频段超宽带无线通信综合试验台--TeraNova平台。该系统由发射器和接收器组成，该发射器和接收器基于肖特基二极管倍频和混频链，能够在1到1.05太赫兹之间对宽达40 GHz的信息承载中频(IF)信号进行上、下转换，即在1 THz以上的第一个吸收定义的传输窗口。根据THz信道在路径损耗和噪声方面的实验特性，在软件上实现了定制成帧、时间同步、信道估计和单载波和多载波调制技术，并分别在发射端和接收端用最先进的任意波形产生器和数字存储示波器实现。在此介绍了实验结果，以突出释放太赫兹频段潜力的机遇和挑战。
Terahertz (THz)-band (0.1 THz to 10 THz) communication is envisioned as a key technology to meet the demand for faster, more ubiquitous wireless communication networks. For many years, the lack of compact, fast and efficient ways to generate, modulate, detect and demodulate THz-band signals has limited the feasibility of such communication systems. Recently, major progress within different device technologies is finally closing the so-called THz gap. For the time being, communication testbeds have been developed at sub-THz frequencies, i.e., at or near the boundary with millimeter-wave communication systems. Nonetheless, higher carrier frequencies and their associated bandwidth are needed to meet the demand for much higher data rates. In this paper, the TeraNova platform, i.e., the first integrated testbed for ultra-broadband wireless communications attrueTHz-band frequencies, is presented. The system consists of a transmitter and a receiver based on Schottky-diode frequency multiplying and mixing chains able to up & down-convert an information-bearing intermediate frequency (IF) signal up to 40 GHz-wide between 1 and 1.05 THz, i.e., the first absorption-defined transmission window above 1 THz. Guided by the experimental characterization of the THz channel in terms of path-loss and noise, tailored framing, time synchronization, channel estimation and single- and multi-carrier modulation techniques are implemented in software and realized by a state-of-the-art arbitrary waveform generator and a digital storage oscilloscope at the transmitter and the receiver, respectively. Experimental results are presented herein to highlight the opportunities and challenges to unleash the potential of the THz band.