论文标题
MMWave到THZ高方向天线阵列的指向误差建模
Pointing Error Modeling of mmWave to THz High-Directional Antenna Arrays
论文作者
论文摘要
本文着重于提供一个分析框架，以量化和评估高频毫米波（MMWave）和Terahertz（THZ）通信链接的指向误差。为此，我们首先表征了与不稳定的发射器（TX）和接收器（RX）之间的点对点通信链接的通道，然后，在不稳定的TX和RX的情况下，我们得出了指向误差的概率密度函数（PDF）和指向误差的累积分布函数（CDF）。具体而言，对于标准阵列天线，为指向误差的PDF提供了封闭形式的表达，这是天线元件数量的函数。此外，为指向误差的CDF和PDF提供了一个更可拖动的近似模型。此外，使用$α-μ$分布（这是用于THZ链接的小规模褪色的通用模型），得出了考虑通道的端到端PDF，并用于计算所考虑系统的中断概率。最后，通过使用蒙特卡洛模拟，验证了分析表达式的准确性，并研究了系统的性能。
This paper focuses on providing an analytical framework for the quantification and evaluation of the pointing error at high-frequency millimeter wave (mmWave) and terahertz (THz) communication links. For this aim, we first characterize the channel of a point-to-point communication link between to unstable transmitter (Tx) and receiver (Rx) and then, we derive the probability density function (PDF) and cumulative distribution functions (CDF) of the pointing error in the presence of an unstable Tx and Rx as a function of the antennas' pattern. Specifically, for the standard array antenna, a closed-form expression is provided for PDF of the pointing error, which is a function of the number of antenna elements. Moreover, a more tractable approximate model is provided for the CDF and PDF of pointing error. In addition, using $α-μ$ distribution, which is a common model for small-scale fading of THz links, the end-to-end PDF of the considered channel is derived and used to calculate the outage probability of the considered system. Finally, by employing Monte-Carlo simulations, the accuracy of the analytical expressions is verified and the performance of the system is studied.
