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This paper develops a graph-based hybrid beamforming framework for multiple-input multiple-output (MIMO) cell-free integrated sensing and communication (ISAC) networks. Specifically, we construct a novel MIMO cell-free ISAC network model.…

Signal Processing · Electrical Eng. & Systems 2025-10-01 Yanan Du , Sai Xu , Jagmohan Chauhan

In this paper, we explore cooperative sensing and communication within cell-free integrated sensing and communication (ISAC) systems. Specifically, multiple transmit access points (APs) collaboratively serve multiple communication users…

Signal Processing · Electrical Eng. & Systems 2025-02-17 Rang Liu , Ming Li , Qian Liu

This paper investigates a novel unmanned aerial vehicle (UAV) secure communication system with integrated sensing and communications. We consider wireless security enhancement for a multiple-antenna UAV transmitting ISAC waveforms to…

Signal Processing · Electrical Eng. & Systems 2024-09-24 Yue Xiu , Wanting Lyu , Phee Lep Yeoh , Yi Ai , Yonghui Li , Ning Wei

This paper studies joint beamforming and power control in a coordinated multicell downlink system that serves multiple users per cell to maximize the minimum weighted signal-to-interference-plus-noise ratio. The optimal solution and…

Information Theory · Computer Science 2016-11-17 Yichao Huang , Chee Wei Tan , Bhaskar D. Rao

Considering a multiple-user multiple-input multiple-output (MIMO) channel with an eavesdropper, this letter develops a beamformer design to optimize the energy efficiency in terms of secrecy bits per Joule under secrecy quality-of-service…

Information Theory · Computer Science 2017-01-19 Nguyen T. Nghia , Hoang D. Tuan , Trung Q. Duong , H. Vincent Poor

In this paper, a cognitive relay channel is considered, and amplify-and-forward (AF) relay beamforming designs in the presence of an eavesdropper and a primary user are studied. Our objective is to optimize the performance of the cognitive…

Information Theory · Computer Science 2010-10-01 Junwei Zhang , Mustafa Cenk Gursoy

This paper investigates robust beamforming for system-centric energy efficiency (EE) optimization in the vehicular integrated sensing and communication (ISAC) system, where the mobility of vehicles poses significant challenges to channel…

Information Theory · Computer Science 2023-10-27 Hanwen Zhang , Haijian Sun , Tianyi He , Weiming Xiang , Rose Qingyang Hu

This paper studies a challenging scenario in a multiple-input multiple-output (MIMO) integrated sensing and communication (ISAC) system where the locations of the sensing target and the communication user are both unknown and random, while…

Information Theory · Computer Science 2026-02-10 Yizhuo Wang , Shuowen Zhang

We study an uplink scenario of a cell-free massive multiple-input multiple-output (CF-mMIMO) system with limited capacity fronthaul links (LC-FHLs) connecting each access point (AP) to the central unit (CU), where user equipments and APs…

Information Theory · Computer Science 2024-10-30 Hamed Masoumi , Mohammad Javad Emadi

In this work, we study an unmanned aerial vehicle (UAV)-enabled secure integrated sensing and communication (ISAC) system, where a UAV serves as an aerial base station (BS) to simultaneously perform communication with a user and detect a…

Information Theory · Computer Science 2025-05-28 Jianping Yao , Zeyu Yang , Zai Yang , Jie Xu , Tony Q. S. Quek

This paper explores the potential of near-field beamforming (NFBF) in integrated sensing and communication (ISAC) systems with extremely large-scale arrays (XL-arrays). The large-scale antenna arrays increase the possibility of having…

Signal Processing · Electrical Eng. & Systems 2023-08-15 Kaiqian Qu , Shuaishuai Guo , Nasir Saeed

Airborne mobile Integrated Sensing and Communication (ISAC) base stations have garnered significant attention recently, with ISAC technology being a crucial application for 6G networks. Since ISAC can sense potential mobile communication…

Performance · Computer Science 2025-08-05 Shengcai Zhou , Luping Xiang , Kun Yang , Kai Kit Wong , Dapeng Oliver Wu , Chan-Byoung Chae

Integrated sensing and communication (ISAC), which allows individual radar and communication systems to share the same spectrum bands, is an emerging and promising technique for alleviating spectrum congestion problems. In this paper, we…

Signal Processing · Electrical Eng. & Systems 2022-12-02 Jinjin Chu , Rang Liu , Ming Li , Yang Liu , Qian Liu

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

Cell-free Massive MIMO (multiple-input multiple-output) refers to a distributed Massive MIMO system where all the access points (APs) cooperate to coherently serve all the user equipments (UEs), suppress inter-cell interference and mitigate…

Information Theory · Computer Science 2019-09-09 Giovanni Interdonato , Hien Quoc Ngo , Pål Frenger , Erik G. Larsson

This letter proposes advanced beamforming design and analyzes its influence on the sensing and communications (S&C) performance for a multiple-antenna integrated S&C (ISAC) system with a single communication user and a single target. Novel…

Information Theory · Computer Science 2023-07-28 Chongjun Ouyang , Yuanwei Liu , Xingqi Zhang

Integrated sensing and communication (ISAC) in millimeter wave is a key enabler for next-generation networks, which leverages large bandwidth and extensive antenna arrays, benefiting both communication and sensing functionalities. The…

Signal Processing · Electrical Eng. & Systems 2025-02-18 Tianhao Mao , Jie Yang , Le Liang , Shi Jin

This work presents a novel robust beamforming design dedicated for dual-functional radar and communication (DFRC) base stations (BSs) in the context of integrated sensing and communications (ISAC). The architecture is intended for…

Signal Processing · Electrical Eng. & Systems 2023-03-15 Ahmad Bazzi , Marwa Chafii

It is known that data rates in standard cellular networks are limited due to inter-cell interference. An effective solution of this problem is to use the multi-cell cooperation idea. In Cloud Radio Access Network (C-RAN), which is a…

Information Theory · Computer Science 2021-02-16 Fehmi Emre Kadan , Ali Özgür Yılmaz

In this paper, we investigate the design of energy-efficient beamforming for an ISAC system, where the transmitted waveform is optimized for joint multi-user communication and target estimation simultaneously. We aim to maximize the system…

Signal Processing · Electrical Eng. & Systems 2023-07-11 Jiaqi Zou , Songlin Sun , Christos Masouros , Yuanhao Cui , Yafeng Liu , Derrick Wing Kwan Ng