论文标题
速率分拆多重访问多梁卫星通信
Rate-Splitting Multiple Access for Multibeam Satellite Communications
论文作者
论文摘要
本文研究了在多光束卫星通信中实现最大最大公平性（MMF）的波束形成设计问题。与传统的线性预编码（NOR）相反，依赖于将任何残余干扰视为噪声，我们考虑了一种基于速率降低的多重访问（RSMA）的新型多层多播多播策略。 RSMA依赖于发射机的线性预编码速率分布（RS），并且在接收器处连续的干扰取消（SIC），以实现灵活的框架，以实现非正交传输和稳健的叶片间干扰管理。为了在多个共通中多播梁中实现MMF，在发射机（CSIT）上使用不同质量的通道状态信息制定了一个供电的可用功率约束优化问题。与常规方案（NORS）相比，RS对多群多播和多光束卫星通信系统的优势通过模拟证明。
This paper studies the beamforming design problem to achieve max-min fairness (MMF) in multibeam satellite communications. Contrary to the conventional linear precoding (NoRS) that relies on fully treating any residual interference as noise, we consider a novel multibeam multicast beamforming strategy based on Rate-Splitting Multiple Access (RSMA). RSMA relies on linearly precoded ratesplitting (RS) at the transmitter and Successive Interference Cancellation (SIC) at receivers to enable a flexible framework for non-orthogonal transmission and robust interbeam interference management. Aiming at achieving MMF among multiple co-channel multicast beams, a per-feed available power constrained optimization problem is formulated with different quality of channel state information at the transmitter (CSIT). The superiority of RS for multigroup multicast and multibeam satellite communication systems compared with conventional scheme (NoRS) is demonstrated via simulations.
