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We introduce a novel received signal strength intensity (RSSI)-based positioning method using fluid antenna systems (FAS), leveraging their inherent channel correlation properties to improve location accuracy. By enabling a single antenna…

Signal Processing · Electrical Eng. & Systems 2025-03-04 Wenzhi Liu , Zhisheng Rong , Xiayue Liu , Yufei Jiang , Xu Zhu

This letter studies the performance of reconfigurable intelligent surface (RIS)-aided communications for a fluid antenna system (FAS) enabled receiver. Specifically, a fixed singleantenna base station (BS) transmits information through a…

Information Theory · Computer Science 2024-02-27 Farshad Rostami Ghadi , Kai-Kit Wong , Wee Kiat New , Hao Xu , Ross Murch , Yangyang Zhang

The flexibility and reconfigurability at the radio frequency (RF) front-end offered by the fluid antenna system (FAS) make this technology promising for providing remarkable diversity gains in networks with small and constrained devices.…

The Fluid Antenna System (FAS), which enables flexible Multiple-Input Multiple-Output (MIMO) communications, introduces new spatial degrees of freedom for next-generation wireless networks. Unlike traditional MIMO, FAS involves joint port…

Information Theory · Computer Science 2025-06-18 Chao Wang , Kai-Kit Wong , Zan Li , Liang Jin , Chan-Byoung Chae

In this paper, we investigate the question of which technology, fluid antenna systems (FAS) or active reconfigurable intelligent surfaces (ARIS), plays a more crucial role in FAS-ARIS wireless communication systems. To address this, we…

Signal Processing · Electrical Eng. & Systems 2024-08-20 Junteng Yao , Liaoshi Zhou , Tuo Wu , Ming Jin , Chongwen Huang , Chau Yuen

In the evolving environment of mobile edge computing (MEC), optimizing system performance to meet the growing demand for low-latency computing services is a top priority. Integrating fluidic antenna (FA) technology into MEC networks…

Information Theory · Computer Science 2024-03-19 Yiping Zuo , Jiajia Guo , Biyun Sheng , Chen Dai , Fu Xiao , Shi Jin

Fluid antenna enables position reconfigurability that gives transceiver access to a high-resolution spatial signal and the ability to avoid interference through the ups and downs of fading channels. Previous studies investigated this fluid…

Signal Processing · Electrical Eng. & Systems 2025-04-30 Tianyu Han , Yongxu Zhu , Kai-Kit Wong , Gan Zheng , Hyundong Shin

The integration of communication and computation is essential for next-generation wireless systems, especially in scenarios demanding massive connectivity and ultra-low latency. Over-the-air federated learning (AirFL), leveraging the…

Signal Processing · Electrical Eng. & Systems 2026-05-13 Saeid Pakravan , Mohsen Ahmadzadeh , Ming Zeng , Ghosheh Abed Hodtani , Xingwang Li

Recent advances in reconfigurable antennas have led to the new concept of the fluid antenna system (FAS) for shape and position flexibility, as another degree of freedom for wireless communication enhancement. This paper explores the…

Signal Processing · Electrical Eng. & Systems 2025-04-15 Jiangong Chen , Yue Xiao , Zhendong Peng , Jing Zhu , Xia Lei , Christos Masouros , Kai-Kit Wong

With the emergence of fluid antenna (FA) in wireless communications, the capability to dynamically adjust port positions offers substantial benefits in spatial diversity and spectrum efficiency, which are particularly valuable for mobile…

Signal Processing · Electrical Eng. & Systems 2025-09-25 Ying Ju , Mingdong Li , Haoyu Wang , Lei Liu , Youyang Qu , Mianxiong Dong , Victor C. M. Leung , Chau Yuen

This paper proposes a fluid antenna (FA)-assisted near-field integrated sensing and communications (ISAC) system enabled by the extremely large-scale simultaneously transmitting and reflecting surface (XL-STARS). By optimizing the…

Signal Processing · Electrical Eng. & Systems 2024-10-01 Jingxuan Zhou , Yinchao Yang , Zhaohui Yang , Mohammad Shikh-Bahaei

This paper addresses the mobility problem with the assistance of fluid antenna (FA) on the user equipment (UE) side. We propose a matrix pencil-based moving port (MPMP) prediction method, which may transform the time-varying channel to a…

Information Theory · Computer Science 2024-08-12 Weidong Li , Haifan Yin , Fanpo Fu , Yandi Cao , Merouane Debbah

Fluid antenna system (FAS) is able to exploit spatial degrees of freedom (DoFs) in wireless channels. In this letter, to exploit spatial DoFs in frequency-selective environments, we investigate an orthogonal frequency division multiplexing…

Information Theory · Computer Science 2026-02-10 Heyang Xiong , Quanzhong Li , Qi Zhang

In this paper, a novel Three dimensional (3D) positioning framework of fluid antenna system (FAS)-enabled unmanned aerial vehicles (UAVs) is developed. In the proposed framework, a set of controlled UAVs cooperatively estimate the real-time…

Networking and Internet Architecture · Computer Science 2025-07-15 Xiaoren Xu , Hao Xu , Dongyu Wei , Walid Saad , Mehdi Bennis , Mingzhe Chen

Fluid antenna systems (FASs) have introduced a new paradigm for wireless system design by revealing how mutual correlation can be exploited to harvest inherent spatial diversity. While existing studies have mainly focused on one-sided FAS…

Information Theory · Computer Science 2026-04-21 Zhentian Zhang , Yuanhui Wu , Kai-Kit Wong , Hao Jiang , An Li

Spatial frequency estimation from a mixture of noisy sinusoids finds applications in various fields. While subspace-based methods offer cost-effective super-resolution parameter estimation, they demand precise array calibration, posing…

Signal Processing · Electrical Eng. & Systems 2024-10-23 Tianyi Liu , Sai Pavan Deram , Khaled Ardah , Martin Haardt , Marc E. Pfetsch , Marius Pesavento

Direction-of-arrival (DoA) is a critical parameter in wireless channel estimation. With the ever-increasing requirement of high data rate and ubiquitous devices in wireless communication systems, effective wideband DoA estimation is…

Signal Processing · Electrical Eng. & Systems 2023-11-21 Xiaorui Ding , Wenbo Xu , Yue Wang

To address high data traffic demands of sixth-generation (6G) networks, this paper proposes a novel architecture that integrates autonomous aerial vehicles (AAVs) and multi-functional reconfigurable intelligent surfaces (MF-RISs) as AM-RIS…

Information Theory · Computer Science 2026-04-20 Li-Hsiang Shen , Yu-Quan Zheng

In this paper, we investigate a fluid antenna system (FAS)-assisted downlink non-orthogonal multiple access (NOMA) for short-packet communications. The base station (BS) adopts a single fixed antenna, while both the central user (CU) and…

Information Theory · Computer Science 2023-10-24 Jianchao Zheng , Tuo Wu , Xiazhi Lai , Cunhua Pan , Maged Elkashlan , Kai-Kit Wong

The emerging technology of fluid antenna systems (FASs) represents a promising next-generation reconfigurable antenna solution, capable of exploiting the full spatial diversity within a predefined space by finely reconfiguring the positions…

Information Theory · Computer Science 2026-05-26 Jiangsheng Huangfu , Zhengyu Song , Tianwei Hou , Anna Li , Yuanwei Liu , Arumugam Nallanathan