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This paper investigates the performance of a single-user fluid antenna system (FAS), by exploiting a class of elliptical copulas to describe the dependence structure amongst the fluid antenna positions (ports). By expressing the well-known…

Information Theory · Computer Science 2024-09-04 Farshad Rostami Ghadi , Kai-Kit Wong , F. Javier Lopez-Martinez , Chan-Byoung Chae , Kin-Fai Tong , Yangyang Zhang

Wirelessly powered communications will entail short packets due to naturally small payloads, low-latency requirements and/or insufficient energy resources to support longer transmissions. In this paper, a wirelessly powered communication…

Information Theory · Computer Science 2016-11-03 Talha Ahmed Khan , Robert W. Heath , Petar Popovski

Radio frequency (RF) energy harvesting and transfer techniques have recently become alternative methods to power the next generation of wireless networks. As this emerging technology enables proactive replenishment of wireless devices, it…

Networking and Internet Architecture · Computer Science 2016-11-15 Xiao Lu , Ping Wang , Dusit Niyato , Zhu Han

This paper leverages fluid antenna (FA) and rate-splitting multiple access (RSMA) to enhance the physical layer security (PLS) of an integrated sensing and communication (ISAC) system. We consider a practical multi-user multi-input…

Information Theory · Computer Science 2025-03-18 Cixiao Zhang , Yin Xu , Size Peng , Xinghao Guo , Xiaowu Ou , Hanjiang Hong , Dazhi He , Wenjun Zhang

Metasurface-based fluid antenna systems (FASs) have been recently proposed as an inexpensive, scalable and practical alternative implementation for the fluid-antenna concept. This work thoroughly evaluates the performance of…

Signal Processing · Electrical Eng. & Systems 2026-05-14 Pablo Ramírez-Espinosa , F. Javier López-Martínez , David Morales-Jiménez

Fluctuation enhanced sensing (FES) is a promising method to improve the selectivity and sensitivity of semiconductor and nanotechnology gas sensors. Most measurement setups include high cost signal conditioning and data acquisition units as…

Instrumentation and Detectors · Physics 2014-05-07 Robert Mingesz , Gergely Vadai , Zoltan Gingl

Fluid antenna system promises to obtain enormous diversity in the small space of a mobile device by switching the position of the radiating element to the most desirable position from a large number of prescribed locations of the given…

Optimization and Control · Mathematics 2022-01-19 Zhi Chai , Kai-Kit Wong , Kin-Fai Tong , Yu Chen , Yangyang Zhang

Reconfigurable intelligent surfaces (RISs) and fluid antennas (FAs) are key technologies for enhancing spatial degrees of freedom in future wireless networks. However, channel acquisition in RIS-aided FA systems is challenging as cascaded…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Josué V. de Araújo , Gilderlan T. de Araújo , André L. F. de Almeida

The integrated sensing and communication (ISAC) technology has been extensively researched to enhance communication rates and radar sensing capabilities. Additionally, a new technology known as fluid antenna system (FAS) has recently been…

Information Theory · Computer Science 2025-11-14 Yuqi Ye , Li You , Hao Xu , Ahmed Elzanaty , Kai-Kit Wong , Xiqi Gao

RF energy harvesting is a promising potential solution to provide convenient and perpetual energy supplies to low-power wireless sensor networks. In this paper, we investigate the energy harvesting performance of a wireless sensor node…

Information Theory · Computer Science 2014-05-22 Tianqing Wu , Hong-Chuan Yang

We propose a novel receiver architecture that preserves the performance benefits of multiport selection in fluid-antenna systems while requiring only a very small number of radio-frequency (RF) chains. The resulting fluid-antenna hybrid…

Information Theory · Computer Science 2026-05-25 José P. González-Coma , José David Vega-Sánchez , F. Javier López-Martínez

In this paper, we analyze the role of fluid antenna systems (FAS) in multi-user systems with hardware impairments (HIs). Specifically, we investigate a scenario where a base station (BS) equipped with multiple fluid antennas communicates…

Signal Processing · Electrical Eng. & Systems 2024-12-23 Junteng Yao , Tuo Wu , Liaoshi Zhou , Ming Jin , Cunhua Pan , Maged Elkashlan , Fumiyuki Adachi , George K. Karagiannidis , Naofal Al-Dhahir , Chau Yuen

Non-fixed flexible antenna architectures, such as fluid antenna system (FAS), movable antenna (MA), and pinching antenna, have garnered significant interest in recent years. Among them, rotatable antenna (RA) has emerged as a promising…

Fluid antenna systems represent an innovative approach in wireless communication, recently applied in multiple access to optimize the signal-to-interference-plus-noise ratio through port selection. This letter frames the port selection…

Signal Processing · Electrical Eng. & Systems 2025-07-15 Pedro D. Alvim , Hugerles S. Silva , Ugo S. Dias , Osamah S. Badarneh , Felipe A. P. Figueiredo , Rausley A. A. de Souza

Radio frequency (RF) energy transfer and harvesting has been intensively studied recently as a promising approach to significantly extend the lifetime of energy-constrained wireless networks. This technique has a great potential to provide…

Information Theory · Computer Science 2017-11-28 He Chen , Chao Zhai , Yonghui Li , Branka Vucetic

In-band full-duplex (IBFD) systems are expected to double the spectral efficiency compared to half-duplex systems, provided that loopback self-interference (SI) can be effectively suppressed. The inherent interference mitigation…

Information Theory · Computer Science 2025-06-09 Hanjiang Hong , Kai-Kit Wong , Hao Xu , Yiyan Wu , Sai Xu , Chan-Byoung Chae , Baiyang Liu , Kin-Fai Tong

The current integrated sensing, communication, and computing (ISCC) systems face significant challenges in both efficiency and resource utilization. To tackle these issues, we propose a novel fluid antenna (FA)-enabled ISCC system,…

Information Theory · Computer Science 2024-09-19 Yiping Zuo , Jiajia Guo , Weicong Chen , Weibei Fan , Biyun Sheng , Fu Xiao , Shi Jin

This paper characterizes the fundamental limits of integrated sensing and communication (ISAC) when the transmitter is subject to an artificial intelligence (AI) representation bottleneck and the receiver employs a fluid antenna system…

Fluid Antenna Systems (FASs) have recently been proposed for enhancing the performance of wireless communication. Previous antenna designs to meet the requirements of FAS have been based on mechanically movable or liquid antennas and…

Signal Processing · Electrical Eng. & Systems 2024-06-17 Jichen Zhang , Junhui Rao , Zhaoyang Ming , Zan Li , Chi-Yuk Chiu , Kai-Kit Wong , Kin-Fai Tong , Ross Murch

Energy harvesting for wireless communication networks is a new paradigm that allows terminals to recharge their batteries from external energy sources in the surrounding environment. A promising energy harvesting technology is wireless…

Information Theory · Computer Science 2016-11-15 Ioannis Krikidis , Stelios Timotheou , Symeon Nikolaou , Gan Zheng , Derrick Wing Kwan Ng , Robert Schober