We investigate the beamforming for the full-duplex self-energy recycling relay system with decode-and-forward protocol, where the relay received signal is divided into two circuits, one for the full-duplex relaying for the destination and the other for the energy harvesting through re-cycling of its RF energy. The beamforming vectors and the power splitting ratio at the relay are optimized to maximize the harvested energy while a certain reception quality threshold at the destination is met. Simulation results show how the performance of the proposed system is affected by various design factors such as numbers of relay antenna sets and analog interference cancellation level.

中文翻译：

---

用于全双工解码转发中继系统中自能回收的波束成形器设计

我们研究了具有解码转发协议的全双工自能量回收中继系统的波束成形，其中中继接收信号分为两个电路，一个用于目的地的全双工中继，另一个用于能量通过回收其射频能量进行收集。波束赋形矢量和中继器的功率分配比被优化以最大化收集到的能量，同时满足目的地的特定接收质量阈值。仿真结果显示了所提出系统的性能如何受到各种设计因素的影响，例如中继天线组的数量和模拟干扰消除水平。