Multi-beam antenna technology can effectively mitigate the impact of deep fading caused by multipath propagation on communication quality through spatial diversity and increase the reliability of wireless mobile communication systems. At the same time, the multi-beam antenna with beamforming algorithm as the key technology can realize spatial division multiple access (SDMA) by automatically adapting the weight vector of the antenna array, enhance the expected value, and suppress the interference. A novel beamforming technology increases the inner circle beam width and reduces the outer ring beam width to minimize the difference between the internal and external cell link SNR. This study considers reducing the number of cells by reasonably allocating beams, which satisfies both the requirements of coverage link quality and the difficulty of forming antenna beams. This research subject applies the scheme and strategy of improving multi-beam antenna technology in the same system. Under the requirement of cell coverage and partitioning, the related technologies and strategies combining multi-beamforming technology and space-time block code technology can obtain high coding gain and diversity gain without sacrificing bandwidth and effectivelyx improve the wireless systematic capacity.

中文翻译：

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高空平台站通信系统的多波束覆盖和波束成形技术

多波束天线技术可以通过空间分集有效地缓解多径传播引起的深度衰落对通信质量的影响，并提高无线移动通信系统的可靠性。同时，以波束赋形算法为关键技术的多波束天线可以通过自动适配天线阵列的权向量来实现空分多址（SDMA），提高期望值，抑制干扰。一种新颖的波束成形技术可增加内圈波束宽度，并减小外圈波束宽度，以最大程度地减少内部和外部小区链路SNR之间的差异。这项研究考虑通过合理分配光束来减少细胞数量，既满足了覆盖链路质量的要求，又满足了形成天线波束的难度。该研究主题在同一系统中应用了改进多波束天线技术的方案和策略。在小区覆盖和划分的要求下，将多波束形成技术和空时分组码技术相结合的相关技术和策略可以在不牺牲带宽的情况下获得较高的编码增益和分集增益，有效地提高了无线系统的容量。