Satellite-ground-link high-rate high-efficiency data transmission technique is one of the key supports for the development of high-resolution low-earth-orbit (LEO) earth observation satellite systems. Ka-band, frequency ranging from 24.6 to 40 GHz, shares a wide available bandwidth, high frequency reuse rate, and strong ability of anti-jamming. Satellite operators have utilized the Ka-band for satellite-earth data transmission, which requires higher traffic capacity, and even have planned to launch new satellites with Ka-band capacity. In this paper, we propose and experimentally demonstrate a 5-Gbps uncoded data rate (corresponding to the channel rate of 6 Gbps) of Ka-band data-transmission system with dual-circular polarization and frequency reuse for satellite-earth applications. The objective of the experiment is gathering experimental data to validate the performance of the proposed four channel systems, including bit error ratio (BER) and link budget. Our work could support future satellite communication applications and meet the imperative demands of high rate transmission to earth.

中文翻译：

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用于卫星应用的 Ka 波段 5-Gbps 数据传输系统演示

星地链路高速高效数据传输技术是发展高分辨率低地球轨道（LEO）地球观测卫星系统的关键支撑之一。Ka频段，频率范围为24.6~40GHz，可用带宽宽，频率复用率高，抗干扰能力强。卫星运营商已将Ka频段用于卫星对地数据传输，这需要更高的流量容量，甚至计划发射具有Ka频段容量的新卫星。在本文中，我们提出并通过实验证明了一种用于卫星-地球应用的具有双圆极化和频率复用的 Ka 波段数据传输系统的 5 Gbps 未编码数据速率（对应于 6 Gbps 的信道速率）。实验的目的是收集实验数据以验证所提出的四通道系统的性能，包括误码率 (BER) 和链路预算。我们的工作可以支持未来的卫星通信应用，并满足对地球高速传输的迫切需求。