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This paper addresses the fairness issue within fluid antenna system (FAS)-assisted non-orthogonal multiple access (NOMA) and orthogonal multiple access (OMA) systems, where a single fixed-antenna base station (BS) transmits…

Signal Processing · Electrical Eng. & Systems 2024-03-04 Junteng Yao , Liaoshi Zhou , Tuo Wu , Ming Jin , Cunhua Pan , Maged Elkashlan , Kai-Kit Wong

This paper studies a fluid-antenna-enabled integrated bistatic sensing and backscatter communication system for future networks where connectivity, power delivery, and environmental awareness are jointly supported by the same…

Signal Processing · Electrical Eng. & Systems 2026-02-12 A. Abdelaziz Salem , Saeed Abdallah , Khawla Alnajjar , Mahmoud A. Albreem , Mohamed Saad , Hayssam Dahrouj , Hesham Elsawy

This paper develops a comprehensive framework for the performance analysis of fluid antenna system (FAS)-enabled unmanned aerial vehicle (UAV) relaying networks operating in the finite blocklength regime. Our contribution lies in…

Information Theory · Computer Science 2025-12-01 Xusheng Zhu , Kai-Kit Wong , Hanjiang Hong , Han Xiao , Hao Xu , Tuo Wu , Chan-Byoung Chae

In this work, a novel design of electromagnetically reconfigurable antennas (ERAs) based on a fluid antenna system (FAS) is proposed, and the corresponding wireless channel model is established. Different from conventional antenna arrays…

Systems and Control · Electrical Eng. & Systems 2025-05-06 Ruiqi Wang , Pinjun Zheng , Tareq Y. Al-Naffouri , Atif Shamim

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

Movable antennas (MAs) are a promising paradigm to enhance the spatial degrees of freedom of conventional multi-antenna systems by flexibly adapting the positions of the antenna elements within a given transmit area. In this paper, we model…

Information Theory · Computer Science 2023-08-07 Yifei Wu , Dongfang Xu , Derrick Wing Kwan Ng , Wolfgang Gerstacker , Robert Schober

In this letter, we propose a sphere bounding scheme for probabilistic robust constructive interference (CI) power minimizing precoding, to address the imperfect channel state information (CSI) caused by the channel error (CE), which…

Signal Processing · Electrical Eng. & Systems 2019-03-13 Yuning You , Gangming Lv

Fluid antenna systems (FAS) have emerged as a promising technology for next-generation wireless systems. However, practical multiuser multiple-input multiple-output FAS (MIMO-FAS) faces two inherently coupled challenges: acquiring accurate…

Information Theory · Computer Science 2026-05-29 Erqiang Tang , Wei Guo , Hengtao He , Shenghui Song , Jun Zhang , Khaled B. Letaief

Pinching antennas have been recently proposed as a promising flexible-antenna technology, which can be implemented by attaching low-cost pinching elements to dielectric waveguides. This work explores the potential of employing pinching…

Information Theory · Computer Science 2025-02-04 Ali Bereyhi , Saba Asaad , Chongjun Ouyang , Zhiguo Ding , H. Vincent Poor

We revisit the massive connectivity challenge by considering the case where no CSI is available at the BS and no precoding is used. In this situation, inter-user interference (IUI) mitigation can only be performed at the user terminal (UT)…

Signal Processing · Electrical Eng. & Systems 2025-04-08 Noor Waqar , Kai-Kit Wong , Chan-Byoung Chae , Ross Murch

In the development of wireless communication technology, multiple-input multiple-output (MIMO) technology has emerged as a key enabler, significantly enhancing the capacity of communication systems. However, traditional MIMO systems, which…

Signal Processing · Electrical Eng. & Systems 2025-03-17 Ruojing Zhao , Yifei Xu , Songjie Yang , Hua Chen , Chadi Assi

We propose a data-aided transmit beamforming scheme for the multi-user multiple-input-single-output (MISO) downlink channel. While conventional beamforming schemes aim at the minimization of the transmit power subject to suppressing…

Information Theory · Computer Science 2023-07-19 C. Masouros , G. Zheng

Most existing antenna array-based source localization methods rely on fixed-position arrays (FPAs) and strict assumptions about source field conditions (near-field or far-field), which limits their effectiveness in complex, dynamic…

This paper addresses the challenge of large model (LM)-embedded wireless network for handling the trade-off problem of model accuracy and network latency. To guarantee a high-quality of users' service, the network latency should be…

Signal Processing · Electrical Eng. & Systems 2025-08-05 Yichen Jin , Zongze Li , Zeyi Ren , Qingfeng Lin , Yik-Chung Wu

Fluid antenna systems (FASs) offer substantial spatial diversity by exploiting the electromagnetic port correlation within compact array spaces, thereby generating favorable small-scale fading conditions with beneficial channel gain…

Information Theory · Computer Science 2025-11-19 Haoyu Liang , Zhentian Zhang , Jian Dang , Hao Jiang , Zaichen Zhang

Fast fluid antenna multiple access (FAMA) is an idea that promises to overcome severe interference in massive access scenarios by reconfiguring the antenna's position at the receiver side on a symbol-by-symbol basis, without the need of…

Signal Processing · Electrical Eng. & Systems 2026-05-25 Noor Waqar , Kai-Kit Wong , Chan-Byoung Chae , Ross Murch

The synergy of fluid-based reconfigurable antenna (FA) technology and full-duplex (FD) communications can be jointly beneficial, as FD can enhance the spectral efficiency of a point-to-point link, while the new degree of freedom offered by…

Information Theory · Computer Science 2023-04-11 Christodoulos Skouroumounis , Ioannis Krikidis

This work explores the channel estimation (CE) problem in uplink transmission for unsourced random access (URA) with a fluid antenna receiver. The additional spatial diversity in a fluid antenna system (FAS) addresses the needs of URA…

Information Theory · Computer Science 2025-04-25 Keru Zhou , Zhentian Zhang , Jian Dang , Qianqian Sun , Zaichen Zhang

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

Fluid antenna (FA) technology has emerged as a promising approach in wireless communications due to its capability of providing increased degrees of freedom (DoFs) and exceptional design flexibility. This paper addresses the challenge of…

Signal Processing · Electrical Eng. & Systems 2025-08-15 He Xu , Tuo Wu , Ye Tian , Kangda Zhi , Wei Liu , Baiyang Liu , Hing Cheung So , Naofal Al-Dhahir , Kin-Fai Tong , Chan-Byoung Chae , Kai-Kit Wong