计算机科学 ›› 2020, Vol. 47 ›› Issue (6): 266-270.doi: 10.11896/jsjkx.200100058
蒋锐1,2, 尹惠1,2, 徐友云2
JIANG Rui1,2, YIN Hui1,2, XU You-yun2
摘要: 文中提出了一种基于毫米波高铁车地通信的自适应多波束成形方法。在该方法中,基站利用毫米波同时发射多个具有不同宽度的波束进行信号传输,从而提升系统的吞吐量。多波束传输方法也可以降低系统的通信中断概率。但是,多个波束同时传输信号会引发波束间干扰的问题。为了减弱其影响,采用一种自适应波束激活算法来实时调整激活波束的数量,使系统在当前时刻保持最佳的吞吐量性能。理论分析和仿真结果表明,所提方法可以进一步提升高铁车地通信系统的吞吐量,同时还可以获得较低的通信中断概率。
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