Ultra-high bandwidth, negligible latency and seamless communication are envisioned as milestones that will revolutionize the way by which societies create, distribute and consume information. The remarkable expansion of wireless data traffic has advocated the investigation of suitable regimes in the radio spectrum to satisfy users' escalating requirements and allow the exploitation of massive capacity and massive connectivity. To this end, the Terahertz (THz) frequency band (0.1-10 THz) has received noticeable attention in the research community as an ideal choice for scenarios involving high-speed transmission. As such, in this work, we present an up-to-date review paper to analyze key concepts associated with the THz system architecture. THz generation methods are first addressed by highlighting the recent progress in the devices technology. Moreover, the recently proposed channel models available for propagation at THz band frequencies are introduced. A comprehensive comparison is then presented between the THz wireless communication and its other contenders. In addition, several applications of THz communication are discussed taking into account various scales. Further, we highlight the milestones achieved regarding THz standardization activities. Finally, a future outlook is provided by presenting and envisaging several potential use cases and attempts to guide the deployment of the THz frequency band.

中文翻译：

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太赫兹频段：通信系统的射频频谱难题的最后一部分

超高带宽，可忽略的等待时间和无缝通信被视为里程碑，将彻底改变社会创建，分配和使用信息的方式的里程碑。无线数据通信量的显着扩展提倡对无线电频谱中的合适方案进行研究，以满足用户不断增长的需求并允许利用大容量和大连通性。为此，太赫兹（THz）频带（0.1-10 THz）在研究界引起了广泛关注，作为涉及高速传输场景的理想选择。因此，在这项工作中，我们提出了最新的评论文章来分析与THz系统架构相关的关键概念。首先，着重介绍器件技术的最新进展来解决太赫兹产生方法。此外，介绍了最近提出的可用于以太赫兹频带传播的信道模型。然后提出了THz无线通信与其他竞争者之间的全面比较。另外，考虑到各种规模，讨论了太赫兹通信的几种应用。此外，我们重点介绍了有关太赫兹标准化活动的里程碑。最后，通过介绍和设想几种潜在的使用案例，并尝试指导THz频段的部署，提供了对未来的展望。考虑到各种规模，讨论了太赫兹通信的几种应用。此外，我们重点介绍了有关太赫兹标准化活动的里程碑。最后，通过介绍和设想几种潜在的使用案例，并尝试指导THz频段的部署，提供了对未来的展望。考虑到各种规模，讨论了太赫兹通信的几种应用。此外，我们重点介绍了有关太赫兹标准化活动的里程碑。最后，通过介绍和设想几种潜在的使用案例，并尝试指导THz频段的部署，提供了对未来的展望。