基于流体天线系统的干扰对齐
Fluid Antenna System-Enabled Interference Alignment
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中文总结 AI 辅助
该研究针对发射端无信道状态信息的多用户干扰信道，提出基于流体天线系统的干扰对齐方案，理论推导并验证其中断概率，可提升平均和速率。
中文摘要 AI 辅助
干扰对齐是多用户无线网络中一种高效的频谱复用方案。在本文中，假设发射端无信道状态信息，我们研究了多用户干扰信道上基于流体天线系统（Fluid Antenna System，FAS）的干扰对齐方案。在该系统中，利用FAS提供的额外空间自由度来置零有效组合干扰的实部，从而将这些实部预留出来用于无干扰期望信号检测。我们从理论上推导了干扰对齐条件和对应的中断概率，仿真结果验证了理论推导的中断概率与数值结果吻合良好。此外，所提系统在非干扰信道上相比传统单用户传输方案能够实现更高的平均和速率。
英文摘要
Interference alignment is an efficient spectrum reuse scheme for multiuser wireless networks. In this letter, assuming no channel state information at the transmitters, we investigate a fluid antenna system (FAS)-enabled interference alignment scheme over a multiuser interference channel. In the proposed system, the additional spatial degrees of freedom provided by the FAS are exploited to nullify the real components of the effective combined interference such that those are reserved for interference-free desired signal detection. The interference alignment conditions and corresponding outage probabilities are theoretically derived. Simulations verify that the theoretically derived outage probabilities agree well with the numerical results. Furthermore, the proposed system is able to achieve a higher average sum rate than conventional single-user transmission schemes over non-interfering channels.
