In the millimeter wave (30-300 GHz) and Terahertz (0.1-10 THz) frequency
bands, high spreading loss and molecular absorption often limit the signal
transmission distance and coverage range. In this paper, four directions to
tackle the crucial problem of distance limitation are investigated, namely, a
physical layer distance-aware design, ultra-massive MIMO communication,
reflectarrays, and intelligent surfaces. Additionally, the potential joint
design of these technologies is proposed to combine the benefits and possibly
further extend the communication distance. Qualitative analyses and
quantitative simulations are provided to illustrate the benefits of the
proposed techniques and demonstrate the feasibility of mm-wave and THz band
communications up to 100 meters in both line-of-sight and non-line-of-sight
areas.

本文针对毫米波和太赫兹频段（30-300 GHz 与 0.1-10 THz）中高扩散损耗和分子吸收常常限制信号传输距离和覆盖范围的问题进行了研究，提出了物理层距离感知设计、超大规模 MIMO 通信、反射阵列以及智能面技术等四种方法，并提出了这些技术的潜在联合设计，可以结合技术优点增加通信距离，在本文中进行了定性分析和定量模拟，证明了上述技术的可行性。