发表机构
School of Electrical Engineering, Aalto University（电气工程学院，阿尔托大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
提出FASCC框架，利用流体天线端口选择和相位调整生成信道域星座，实现物理层安全，在窃听者更近时仍显著提升保密性能。
AI 中文摘要
流体天线系统（FAS）近期因其利用单射频链访问大量信道实现的能力，成为未来无线网络的一项有前景的技术。这一能力为超越传统波束成形和人工噪声方法的物理层安全创造了新机遇。本文提出一种用于下行链路通信的新型流体天线安全信道驱动星座（FASCC）框架，其中信息通过FAS端口选择和相位调整生成的信道域星座点来传递。根据窃听者信道状态信息的可用性，开发了两种互补的FASCC方案。数值结果表明，即使窃听者（Eve）比合法接收者（Bob）更靠近基站，所提出的FASCC框架在误码率和互信息保密性能方面也能实现显著的保密增益。
英文摘要
Fluid antenna systems (FAS) have recently emerged as a promising technology for future wireless networks due to their ability to access a large number of channel realizations using a single radio-frequency chain. This capability creates new opportunities for physical-layer security beyond conventional beamforming and artificial-noise approaches. In this paper, we propose a novel Fluid Antenna Secure Channel-driven Constellation (FASCC) framework for downlink communications, in which information is conveyed through channel-domain constellation points generated by FAS port selection and phase adaptation. Two complementary FASCC schemes are developed, depending on the availability of eavesdropper's channel state information. Numerical results demonstrate that the proposed FASCC framework achieves significant secrecy gains in terms of bit error rate and mutual-information secrecy performance, even when Eve is significantly closer to the base station than Bob.
