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This paper proposes to leverage intelligent reflecting surface (IRS) backscatter to realize radio-frequency-chain-free uplink-transmissions (RFCF-UT). In this communication paradigm, IRS works as an information carrier, whose elements are…

Signal Processing · Electrical Eng. & Systems 2022-07-22 Sai Xu , Yanan Du , Jiliang Zhang , Jiangzhou Wang , Jie Zhang

The fluid antenna system (FAS) is a disruptive tech-nology for future wireless communication networks. This paper considers the joint optimization of beamforming matrices and antenna positions for weighted sum rate (WSR) maximization in…

Information Theory · Computer Science 2025-09-26 Tianyi Liao , Wei Guo , Hengtao He , Shenghui Song , Jun Zhang , Khaled B. Letaief

Recently, ambient backscatter communications has been introduced as a cutting-edge technology which enables smart devices to communicate by utilizing ambient radio frequency (RF) signals without requiring active RF transmission. This…

Networking and Internet Architecture · Computer Science 2017-12-14 Nguyen Van Huynh , Dinh Thai Hoang , Xiao Lu , Dusit Niyato , Ping Wang , Dong In Kim

Fluid antenna (FA), as an emerging antenna technology, fully exploits spatial diversity. This paper integrates FA with the receive spatial modulation (RSM) scheme and proposes a novel FA-empowered RSM (FA-RSM) system. In this system, the…

Information Theory · Computer Science 2025-06-10 Xinghao Guo , Yin Xu , Dazhi He , Cixiao Zhang , Hanjiang Hong , Kai-Kit Wong , Chan-Byoung Chae , Wenjun Zhang , Yiyan Wu

This paper explores an integrated sensing and communication (ISAC) system with backscattering RFID tags. In this setup, an access point employs communication beams to serve communication users while leveraging a sensing beam to interrogate…

Signal Processing · Electrical Eng. & Systems 2026-04-17 Hao Luo , Umut Demirhan , Ahmed Alkhateeb

This letter considers the secure communication in a reconfigurable intelligent surface (RIS) aided full duplex (FD) system. An FD base station (BS) serves an uplink (UL) user and a downlink (DL) user simultaneously over the same…

Signal Processing · Electrical Eng. & Systems 2022-09-27 Pengxin Guan , Yiru Wang , Yuping Zhao

This work considers a system where a dual-function radar transmitter (source) performs direct communication with a reader while simultaneously enabling ambient backscatter communication from a tag. The source embeds its message into a coded…

Signal Processing · Electrical Eng. & Systems 2026-04-20 Yubo Zhang , Luca Venturino , Xiaodong Wang

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

Fluid antenna system (FAS) represents the concept of treating antenna as a reconfigurable physical-layer resource to broaden system design and network optimization and inspire next-generation reconfigurable antennas. FAS can unleash new…

Signal Processing · Electrical Eng. & Systems 2025-12-23 Tuo Wu , Kai-Kit Wong , Jie Tang , Junteng Yao , Baiyang Liu , Kin-Fai Tong , Chan-Byoung Chae , Matthew C. Valenti , Kwai-Man Luk

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

Attaining the vision of Smart Cities requires the deployment of an enormous number of sensors for monitoring various conditions of the environment. Backscatter-sensors have emerged to be a promising solution due to the uninterruptible…

Information Theory · Computer Science 2018-01-11 Guangxu Zhu , Seung-Woo Ko , Kaibin Huang

Ambient backscatter communications have been introduced as low-power communications for green networking. This technology is very promising as it recycles ambient radio frequency waves, however such systems have limitations and suffer from…

Signal Processing · Electrical Eng. & Systems 2021-11-04 Romain Fara , Nada Bel-Haj-Maati , Dinh-Thuy Phan-Huy , Nadine Malhouroux , Marco Di Renzo

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

This paper investigates a novel fluid antenna multiple access (FAMA)-assisted wireless powered communication network (WPCN), in which a hybrid access point (HAP) equipped with multiple fixed position antennas (FPAs) provides integrated data…

Information Theory · Computer Science 2025-09-29 Xiao Lin , Yizhe Zhao , Halvin Yang , Jie Hu

This work investigates the potential of exploiting movable antennas (MAs) to enhance the performance of a multi-user downlink integrated sensing and communication (ISAC) system. Specifically, we formulate an optimization problem to maximize…

Information Theory · Computer Science 2025-03-31 Yanze Han , Min Li , Xingyu Zhao , Ming-Min Zhao , Min-Jian Zhao

Integrated sensing and communication holds great promise for low-altitude economy applications. However, conventional downtilted base stations primarily provide sectorized forward lobes for ground services, failing to sense air targets due…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Lingyi Zhu , Zhongxiang Wei , Fan Liu , Jianjun Wu , Xiao-Wei Tang , Christos Masouros , Shanpu Shen

The fluid antenna concept represents shape-flexible and position-flexible antenna technologies designed to enhance wireless communication applications. In this paper, we apply this concept to reconfigurable intelligent surfaces (RISs),…

Signal Processing · Electrical Eng. & Systems 2025-02-25 Abdelhamid Salem , Kai-Kit Wong , George Alexandropoulos , Chan-Byoung Chae , Ross Murch

Sixth generation (6G) mobile networks may include new passive technologies, such as ambient backscatter communication or the use of reconfigurable intelligent surfaces, to avoid the emission of waves and the corresponding energy…

Signal Processing · Electrical Eng. & Systems 2021-04-09 Romain Fara , Dinh-Thuy Phan-Huy , Philippe Ratajczak , Abdelwaheb Ourir , Marco Di Renzo , Julien de Rosny

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

Recently, cellular Ambient Backscattering has been proposed for cellular networks. Up to now an Ambient backscatter device, called zero-energy device or tag, broadcasted its message by backscattering ambient downlink waves from the closest…

Information Theory · Computer Science 2025-04-11 Ahmed ElSanhoury , Islam Galal , Khaled AlKady , Aml ElKhodary , Dinh-Thuy Phan-Huy , Ayman M. Hassan