Following recent advances in terahertz (THz) technology, there is a consensus on the crucial role of THz communications in the next generation of wireless systems. Aiming at catalyzing THz communications research, we propose TeraMIMO, an accurate stochastic MATLAB simulator of statistical THz channels. We simulate ultra-massive multiple-input multiple-output antenna configurations as critical infrastructure enablers that overcome the limitation in THz communications distances. We consider both line-of-sight and multipath components and propose frequency- and delay-domain implementations for single- and multi-carrier paradigms in both time-invariant and time-variant scenarios. We implement exhaustive molecular absorption computations based on radiative transfer theory alongside alternative sub-THz approximations. We further model THz-specific constraints, including wideband beam split effects, spherical wave propagation, and misalignment fading. We verify TeraMIMO by analogy with measurement-based channel models in the literature and ergodic capacity analysis. We introduce a graphical user interface and a guide for using TeraMIMO in THz channel generation and analyses.
翻译:在Thahertz(Thz)技术取得最新进展之后,人们就Thz通信在下一代无线系统中的关键作用达成了共识。为了刺激Thz通信研究,我们提议TeraMIMO,这是统计Thz频道的精确的蒸发式MATLAB模拟器。我们模拟超大成份多输出天线配置,作为克服Thz通信距离限制的关键基础设施促进器。我们考虑的是视线和多路路段组件,并提议在时间和时间变异两种情况中采用单一和多载体模式的频率和延迟执行。我们采用基于热传感传输理论的详尽分子吸收计算,同时采用其他的次Thaz近似法。我们进一步模拟Thz的具体限制,包括宽带断裂效应、球波波传播和错位退。我们通过在文献和ergodic能力分析中与基于测量的频道模型进行比对TeraMIMIMIMO进行核查。我们采用一个图形用户界面和Trema 生成分析指南。