5G systems are becoming a reality and the evolution toward beyond 5G and 6G systems is already being defined, also to cope with the ever increasing capacity demanded by on-ground users. This will pose challenging requirements on the feeder link of future satellite systems, which risks to become a bottleneck for the overall system performance. In this article, we propose a novel architecture of linear precoding for the feeder link of a broadcast satellite system operating with full frequency reuse to significantly enhance the achievable capacity. The architecture has been simulated and tested in a challenging multifrequency scenario, where Ku, Ka, Q/V, and W bands have been considered for transmission. The numerical performance analysis and the open issues related to the practical realization of the proposed architecture are also thoroughly discussed.

中文翻译：

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未来广播服务的馈线链路预编码

5G 系统正在成为现实，并且已经定义了向 5G 和 6G 系统之外的演进，以应对地面用户不断增长的容量需求。这将对未来卫星系统的馈线链路提出具有挑战性的要求，有可能成为整个系统性能的瓶颈。在本文中，我们为广播卫星系统的馈线链路提出了一种新颖的线性预编码架构，该系统采用全频率重用，以显着提高可实现的容量。该架构已在具有挑战性的多频场景中进行了仿真和测试，其中 Ku、Ka、Q/V 和 W 频段已被考虑用于传输。