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In this paper, we study a movable antenna (MA) empowered secure transmission scheme for reconfigurable intelligent surface (RIS) aided cell-free symbiotic radio (SR) system. Specifically, the MAs deployed at distributed access points (APs)…

Signal Processing · Electrical Eng. & Systems 2025-08-12 Bin Lyu , Jiayu Guan , Meng Hua , Changsheng You , Tianqi Mao , Abbas Jamalipour

Movable antenna (MA) technology, which can reconfigure wireless channels by flexibly moving antenna positions in a specified region, has great potential for improving communication performance. In this paper, we consider a new setup of…

Information Theory · Computer Science 2024-05-08 Guojie Hu , Qingqing Wu , Donghui Xu , Kui Xu , Jiangbo Si , Yunlong Cai , Naofal Al-Dhahir

In this paper, we consider the Physical Layer Security(PLS) problem in orthogonal frequency division multiple access (OFDMA) based dual-hop system which consists of multiple users, multiple amplify and forward relays, and an eavesdropper.…

Information Theory · Computer Science 2018-03-15 Waqas Aman , Guftaar Ahmad Sardar Sidhu , Tayyaba Jabeen , Feifei Gao , Shi Jin

In low-altitude wireless communications, the increased complexity of wireless channels and the uncertainty of eavesdroppers (Eves)--caused by diverse altitudes, speeds, and obstacles--pose significant challenges to physical layer security…

Information Theory · Computer Science 2025-07-09 Yujia Zhao , Zhiyong Feng , Kan Yu , Qixun Zhang , Dong Li

This study investigates a downlink rate-splitting multiple access (RSMA) scenario in which multiple base stations (BSs), employing a coordinated multi-point (CoMP) transmission scheme, serve users equipped with movable antenna (MA)…

Signal Processing · Electrical Eng. & Systems 2025-02-25 Ali Amhaz , Shreya Khisa , Mohamed Elhattab , Chadi Assi , Sanaa Sharafeddine

The recently emerged movable antenna (MA) and fluid antenna technologies offer promising solutions to enhance the spatial degrees of freedom in wireless systems by dynamically adjusting the positions of transmit or receive antennas within…

Signal Processing · Electrical Eng. & Systems 2026-03-18 Yikun Wang , Yang Li , Zeyi Ren , Jingreng Lei , Yik-Chung Wu , Rui Zhang

Fluid antenna system (FAS)/movable antenna (MA) has emerged as a promising technology to fully exploit the spatial degrees of freedom (DoFs). In this paper, we propose a new rotatable antenna (RA) model, as a simplified implementation of…

Information Theory · Computer Science 2025-02-28 Qingjie Wu , Beixiong Zheng , Tiantian Ma , Rui Zhang

The pinching-antenna system (PASS) introduces new degrees of freedom (DoFs) for physical layer security (PLS) through pinching beamforming. In this paper, a couple of scenarios for secure beamforming for PASS are studied. 1) For the case…

Signal Processing · Electrical Eng. & Systems 2025-07-04 Mingjun Sun , Chongjun Ouyang , Shaochuan Wu , Yuanwei Liu

This paper investigates the coexistence of non-orthogonal multiple access (NOMA) and full-duplex (FD) to improve both spectral efficiency (SE) and user fairness. In such a scenario, NOMA based on the successive interference cancellation…

Signal Processing · Electrical Eng. & Systems 2019-08-05 Hieu V. Nguyen , Van-Dinh Nguyen , Octavia A. Dobre , Diep N. Nguyen , Eryk Dutkiewicz , Oh-Soon Shin

In this letter, we investigate enhancing the physical layer security (PLS) for the dual-function radar-communication (DFRC) system with hybrid beamforming (HBF) architecture, where the base station (BS) achieves downlink communication and…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Lingyun Xu , Bowen Wang , Huiyong Li , Ziyang Cheng

Movable antennas (MAs) enhance flexibility in beamforming gain and interference suppression by adjusting position within certain areas of the transceivers. In this paper, we propose an MA-assisted integrated sensing and communication…

Signal Processing · Electrical Eng. & Systems 2025-01-03 Chengjun Jiang , Chensi Zhang , Chongwen Huang , Jianhua Ge , Dusit Niyato , Chau Yuen

Flexible-geometry arrays based on movable antennas have shown considerable potential for improving wireless communication performance. In this letter, we investigate a multiuser multiple-input single-output (MU-MISO) downlink secure…

Signal Processing · Electrical Eng. & Systems 2026-04-13 Xiangyu Dong , Ran Yang , Songjie Yang , Weidong Mei , Lipeng Zhu , Yue Xiu , Zhongpei Zhang

In this paper, we propose a full-duplex integrated sensing and communication (ISAC) system enabled by a movable antenna (MA). By leveraging the characteristic of MA that can increase the spatial diversity gain, the performance of the system…

Signal Processing · Electrical Eng. & Systems 2025-11-07 Zhendong Li , Jianle Ba , Zhou Su , Haixia Peng , Yuntao Wang , Wen Chen , Qingqing Wu

Movable antennas (MAs) have demonstrated significant potential in enhancing the performance of integrated sensing and communication (ISAC) systems. However, the application in the integrated and cost-effective full-duplex (FD) monostatic…

Information Theory · Computer Science 2025-05-15 Size Peng , Cixiao Zhang , Yin Xu , Qingqing Wu , Lipeng Zhu , Xiaowu Ou , Dazhi He

Movable antenna (MA) has emerged as a promising technology to flexibly reconfigure wireless channels by adjusting antenna placement. In this paper, we study a dual-functional radar-communication (DFRC) system enhanced with movable antennas.…

Signal Processing · Electrical Eng. & Systems 2025-10-14 Ran Yang , Zheng Dong , Peng Cheng , Lin Zhang , Wanting Lyu , Yue Xiu , Ning Wei , Chadi Assi

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

In this paper, we consider a multi-user wireless system with one full duplex (FD) base station (BS) serving a set of half duplex (HD) mobile users.To cope with the in-band self-interference (SI) and co-channel interference, we formulate a…

Information Theory · Computer Science 2016-12-16 Tsung-Hui Chang , Ya-Feng Liu , Shih-Chun Lin

This paper addresses the challenge of co-channel interference and intentional jamming in low-altitude air-ground communications. Since conventional fixed-position antenna (FPA) systems lack spatial adaptability to dynamically balance signal…

Signal Processing · Electrical Eng. & Systems 2025-09-03 Yifan Guo , Junshan Luo , Fanggang Wang , Haiyang Ding , Shilian Wang , Zhenhai Xu

Massive multiple-input-multiple-output (MIMO) transmission is a promising technology to improve the capacity and reliability of wireless systems. However, the number of antennas that can be equipped at a base station (BS) is limited by the…

Information Theory · Computer Science 2018-05-02 Qurrat-Ul-Ain Nadeem , Abla Kammoun , Mérouane Debbah , and Mohamed-Slim Alouini

This paper considers a multiuser full-duplex (FD) wireless communication system, where a FD radio base station (BS) serves multiple single-antenna half-duplex (HD) uplink and downlink users simultaneously. Unlike conventional interference…

Information Theory · Computer Science 2017-04-03 Mahmoud T. Kabir , Muhammad R. A. Khandaker , Christos Masouros
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