论文标题
在未对准和确定性褪色下的LOS THZ系统的性能分析
Performance Analysis of LOS THz Systems under Misalignment and Deterministic Fading
论文作者
论文摘要
Terahertz（THZ）频带的视线（LOS）无线通信设想在定义下一代无线技术方面发挥重要作用。这项工作分析了潜在的LOS THZ系统的性能，该系统经历了传播损失和未对准天线束。通过确定性路径损失，分子吸收效应和由于天线指向误差引起的随机褪色，讨论了THZ通道的特殊性。假设相移键合（PSK）调制方案，简化的分析表达式将近似于所提出的THZ系统的计算符号错误率（SER）。蒙特卡洛模拟用于验证各种传输距离和未对准场景的理论模型准确性。派生的SER公式匹配信噪比（SNR）在35 dB高达100 m的35 dB的模拟结果，天线位移抖动方差为0.05 $ M^2 $。通常，对于较低的SNR水平，理论模型不匹配不超过2 dB。
Line-of-sight (LOS) wireless communication at terahertz (THz) frequency bands is envisioned to play a major role in defining next-generation wireless technologies. This work analyzes the performance of a potential LOS THz system experiencing propagation loss and misaligned antenna beams. The THz channel particularities are discussed in terms of deterministic path loss, molecular absorption effect and stochastic fading due to antenna pointing errors. Assuming phase shift keying (PSK) modulation schemes, simplified analytical expressions are approximated for computing symbol error rate (SER) of the proposed THz system. Monte Carlo simulations are applied to verify theoretical model accuracy over various transmission distances and misalignment scenarios. The derived SER formulas match simulation results for Signal-to-noise ratio (SNR) above 35 dB at transmission distance up to 100 m and antenna displacement jitter variance of 0.05 $m^2$. In general, the theoretical model mismatch does not exceed 2 dB for lower SNR levels.
