This paper analyzes the downlink transmission performance of an aeronautical broadband satellite communication system operating at millimeter wave (mmWave) band. Specifically, by considering that two adjacent satellites cooperatively communicate with an airplane employing an antenna array, we first propose a simple transmit scheme combining Alamouti space time block coding (STBC) with receive beamforming (BF) to improve the system performance. Then, by considering the phase shift errors in phased array antenna deployed at the airplane, we analyze the equivalent output signal-to-noise ratio (SNR) of the considered communication system. Further, with the help of the moment generating function (MGF) approach, we derive the average symbol error rate (ASER) of the system with the proposed transmit scheme, where the satellite links undergo correlated shadow-Rician (SR) fading. Finally, computer simulations are conducted to confirm the validity of the theoretical analysis and reveal the effect of phase errors on the performance of the aeronautical broadband communication system.

本文分析了工作在毫米波（mmWave）频段的航空宽带卫星通信系统的下行传输性能。具体而言，考虑到两颗相邻卫星与采用天线阵列的飞机协同通信，我们首先提出了一种简单的发射方案，将 Alamouti 空时分组编码 (STBC) 与接收波束成形 (BF) 相结合，以提高系统性能。然后，通过考虑部署在飞机上的相控阵天线的相移误差，我们分析了所考虑通信系统的等效输出信噪比 (SNR)。此外，在矩生成函数 (MGF) 方法的帮助下，我们使用所提出的传输方案推导出系统的平均符号错误率 (ASER)，其中卫星链路经历相关的影子-莱斯 (SR) 衰落。最后，通过计算机仿真验证了理论分析的有效性，揭示了相位误差对航空宽带通信系统性能的影响。