Movable antenna (MA) provides an innovative way to arrange antennas that can contribute to improved signal quality and more effective interference management. This method is especially beneficial for full-duplex (FD) wireless, which struggles with self-interference (SI) that usually overpowers the desired incoming signals. By dynamically repositioning transmit/receive antennas, we can mitigate the SI and enhance the reception of incoming signals. Thus, this paper proposes a novel MA-enabled point-to-point FD wireless system and formulates the minimum achievable rate of two FD terminals. To maximize the minimum achievable rate and determine the near-optimal positions of the MAs, we introduce a solution based on projected particle swarm optimization (PPSO), which can circumvent common suboptimal positioning issues. Moreover, numerical results reveal that the PPSO method leads to a better performance compared to the conventional alternating position optimization (APO). The results also demonstrate that an MA-enabled FD system outperforms the one using fixed-position antennas (FPAs).

翻译：可移动天线（MA）提供了一种创新的天线布置方式，有助于改善信号质量并实现更有效的干扰管理。该方法对于全双工（FD）无线通信尤为有益——这类系统受困于通常淹没期望输入信号的自干扰（SI）。通过动态重配置发射/接收天线位置，我们既能抑制自干扰，又能增强期望信号的接收效果。因此，本文提出了一种基于可移动天线的新型点对点全双工无线系统，并推导了两个FD终端的最小可达速率公式。为最大化该最小可达速率并确定MAs的准最优位置，我们引入了一种基于投影粒子群优化（PPSO）的解决方案，该方案可规避常见的次优定位问题。此外，数值结果表明，与传统交替位置优化（APO）相比，PPSO方法实现了更优性能。结果还表明，采用可移动天线的FD系统性能优于使用固定位置天线（FPAs）的系统。