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To enable innovative applications and services, both industry and academia are exploring new technologies for sixth generation (6G) communications. One of the promising candidates is fluid antenna system (FAS). Unlike existing systems, FAS…

Information Theory · Computer Science 2023-05-12 Wee Kiat New , Kai-Kit Wong , Hao Xu , Kin-Fai Tong , Chan-Byoung Chae

We consider the extra degree of freedom offered by the rotation of the reconfigurable intelligent surface (RIS) plane and investigate its potential in improving the performance of RIS-assisted wireless communication systems. By considering…

Information Theory · Computer Science 2022-02-14 Yajun Cheng , Wei Peng , Chongwen Huang , George C. Alexandropoulos , Chau Yuen , Mérouane Debbah

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

The rotary and movable antennas (ROMA) technology is efficient in enhancing wireless network capacity by adjusting both the antenna spacing and three-dimensional (3D) rotation of antenna surfaces, based on the spatial distribution of users…

Signal Processing · Electrical Eng. & Systems 2024-12-06 Wenhui Yi , Jiayi Zhang , Zhe Wang , Huahua Xiao , Bo Ai

The SmartAntenna proposes a novel approach to extend wireless communication, focusing on autonomous orientation to extend range and optimize performance. Through meticulous evaluation, various aspects of its functionality were assessed,…

Systems and Control · Electrical Eng. & Systems 2024-05-21 Michael Swann , Pedro Machado , Isibor Kennedy Ihianle , Salisu Yahaya , Farbod Zorriassatine , Andreas Oikonomou

Beamforming with a sufficient number of antennas is one of the most significant technologies for both Multi-user (MU) Multiple-input Multiple-output (MIMO) communication and MIMO radar sensing in Integrated Sensing and Communication (ISAC)…

Signal Processing · Electrical Eng. & Systems 2025-10-17 Jiangong Chen , Xia Lei , Yuchen Zhang , Kaitao Meng , Christos Masouros

The rapid proliferation of unmanned aerial vehicle (UAV) applications imposes stringent requirements on continuous and reliable communication coverage in low-altitude airspace. Conventional cellular systems built upon fixed-position…

Information Theory · Computer Science 2026-03-16 Kan Yu , Kaixuan Li , Yujia Zhao , Dingyou Ma , Qixun Zhang , Zhiyong Feng

Six-dimensional movable antenna (6DMA) is an emerging technology that is able to fully exploit the spatial variation of wireless channels by controlling the 3D positions and 3D rotations of distributed antennas/antenna surfaces at the…

Information Theory · Computer Science 2024-09-10 Xiaodan Shao , Rui Zhang , Robert Schober

Integrated sensing and communication (ISAC) is emerging as a key enabler to address the growing spectrum congestion problem and satisfy increasing demands for ubiquitous sensing and communication. By sharing various resources and…

Signal Processing · Electrical Eng. & Systems 2022-06-20 Rang Liu , Ming Li , Honghao Luo , Qian Liu , A. Lee Swindlehurst

Flexible antenna arrays (FAAs) can physically reshape their geometry to add new spatial degrees of freedom, whereas transmit beamforming adjusts the complex element weights to electronically steer and shape the array's radiation pattern,…

Signal Processing · Electrical Eng. & Systems 2026-03-02 Zhen Xu , Gaojie Chen , Jing Zhu , Weiwei Zhao , Yonghui Li , Rahim Tafazolli , Wei Huang

As 6G wireless communication systems evolve toward intelligence, high reconfigurability, and space-air-ground integration \cite{liu2025toward, liu2024near}, the limitations of traditional fixed antenna (TFA) have become increasingly…

Signal Processing · Electrical Eng. & Systems 2026-01-09 Yining Li , Ziwei Wan , Chongjia Sun , Kaijun Feng , Keke Ying , Wenyan Ma , Lipeng Zhu , Xiaodan Shao , Weidong Mei , Wenqian Shen , Zhenyu Xiao , Zhen Gao , Rui Zhang

Flexible-antenna systems have recently attracted significant research attention due to their potential to intelligently reconfigure wireless channels. However, the current flexible-antenna systems still suffer from fundamental limitations,…

Signal Processing · Electrical Eng. & Systems 2025-07-24 Yuanwei Liu , Zhaolin Wang , Xidong Mu , Chongjun Ouyang , Xiaoxia Xu , Zhiguo Ding

This work investigates a robust resource allocation framework for a downlink multi-user communication system integrating movable antennas (MAs) and reconfigurable intelligent surfaces (RISs) under the rate-splitting multiple access (RSMA)…

Signal Processing · Electrical Eng. & Systems 2026-05-12 Muhammad Asif , Asim Ihsan , Zhongliang Wang , Manzoor Ahmed , Xingwang Li , Arumugam Nallanathan , Symeon Chatzinotas

This article investigates the integration of movable antennas (MAs) into multicast communication systems. By discretizing the motion of the MAs, a novel MA-assisted multicast transmission architecture is formulated. An alternating…

Signal Processing · Electrical Eng. & Systems 2025-05-16 Zhenqiao Cheng , Nanxi Li , Jianchi Zhu , Chongjun Ouyang , Xingqi Zhang

Reconfigurable intelligent surfaces (RIS) have been actively researched as a potential technique for future wireless communications, which intelligently ameliorate the signal propagation environment. In the conventional design, each RIS…

Information Theory · Computer Science 2022-03-17 Qingchao Li , Mohammed El-Hajjar , Ibrahim Hemadeh , Arman Shojaeifard , Alain A. M. Mourad , Bruno Clerckx , Lajos Hanzo

Reconfigurable Intelligent Surface (RIS) can create favorable multipath to establish strong links that are useful in millimeter wave (mmWave) communications. While previous works used Rayleigh or Rician fading, we use the fluctuating…

Information Theory · Computer Science 2020-11-10 Hongyang Du , Jiayi Zhang , Julian Cheng , Zhaohua Lu , Bo Ai

Movable antenna (MA) technology exhibits great promise for enhancing the sensing capabilities of future sixth-generation (6G) networks due to its capability to alter antenna array geometry. With the growing prevalence of near-field…

Information Theory · Computer Science 2025-12-30 Yushen Wang , Weidong Mei , Xin Wei , Ya Fei Wu , Zhi Chen , Boyu Ning

Rate-splitting multiple access (RSMA) has emerged as a novel, general, and powerful framework for the design and optimization of non-orthogonal transmission, multiple access (MA), and interference management strategies for future wireless…

Information Theory · Computer Science 2022-10-03 Yijie Mao , Onur Dizdar , Bruno Clerckx , Robert Schober , Petar Popovski , H. Vincent Poor

Reconfigurable Intelligent Surface (RIS) is a promising solution to reconfigure the wireless environment in a controllable way. To compensate for the double-fading attenuation in the RIS-aided link, a large number of passive reflecting…

Information Theory · Computer Science 2021-03-02 Ruizhe Long , Ying-Chang Liang , Yiyang Pei , Erik G. Larsson

Advances in reflectarrays and array lenses with electronic beam-forming capabilities are enabling a host of new possibilities for these high-performance, low-cost antenna architectures. This paper reviews enabling technologies and…

Optics · Physics 2023-07-19 Sean Victor Hum , Julien Perruisseau-Carrier