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In this paper, we propose a new type of array antenna, termed the Random Frequency Diverse Array (RFDA), for an uncoupled indication of target direction and range with low system complexity. In RFDA, each array element has a narrow…

信息论 · 计算机科学 2017-04-05 Yimin Liu , Hang Ruan , Lei Wang , Arye Nehorai

In this paper we study energy efficient joint power allocation and beamforming for coordinated multicell multiuser downlink systems. The considered optimization problem is in a non-convex fractional form and hard to tackle. We propose to…

信息论 · 计算机科学 2013-10-09 He Shiwen , Huang Yongming , Jin Shi , Yang Luxi

This paper investigates a movable antenna (MA) enabled integrated sensing and communication (ISAC) system under the influence of antenna crosstalk. First, it generalizes the antenna crosstalk model from the conventional fixed-position…

信号处理 · 电气工程与系统科学 2025-09-04 Zeyuan Zhang , Yue Xiu , Zheng Dong , Jiacheng Yin , Maurice J. Khabbaz , Chadi Assi , Ning Wei

Cognitive multiple-input multiple-output (MIMO) radar is capable of adjusting system parameters adaptively by sensing and learning in complex dynamic environment. Beamforming performance of MIMO radar is guided by both beamforming weight…

信号处理 · 电气工程与系统科学 2021-03-05 Weitong Zhai , Xiangrong Wang , Syed A. Hamza , Moeness G. Amin

Next-generation wireless networks strive for higher communication rates, ultra-low latency, seamless connectivity, and high-resolution sensing capabilities. To meet these demands, terahertz (THz)-band signal processing is envisioned as a…

信号处理 · 电气工程与系统科学 2023-07-17 Ahmet M. Elbir , Asmaa Abdallah , Abdulkadir Celik , Ahmed M. Eltawil

This paper studies analog beamforming in active sensing applications, such as millimeter-wave radar or ultrasound imaging. Analog beamforming architectures employ a single RF-IF chain connected to all array elements via inexpensive phase…

信号处理 · 电气工程与系统科学 2019-06-24 Robin Rajamäki , Sundeep Prabhakar Chepuri , Visa Koivunen

Dual-function radar-communication (DFRC), which can simultaneously perform both radar and communication functionalities using the same hardware platform, spectral resource and transmit waveform, is a promising technique for realizing…

信号处理 · 电气工程与系统科学 2022-05-31 R. Liu , M. Li , Q. Liu , A. L. Swindlehurst

In this paper, we employ a hardware-efficient hybrid beamforming (HB) architecture to achieve balanced performance in an intelligent reflecting surface (IRS)-assisted integrated sensing and communication (ISAC) system. We consider a…

信号处理 · 电气工程与系统科学 2025-11-25 Weijie Xiong , Zhenglan Zhao , Jingran Lin , Zhiling Xiao , Qiang Li

In this work, we present a novel robust distributed beamforming (RDB) approach based on low-rank and cross-correlation techniques. The proposed RDB approach mitigates the effects of channel errors in wireless networks equipped with relays…

信号处理 · 电气工程与系统科学 2019-12-04 H. Ruan , R. C. de Lamare

Direction-of-arrival (DOA) information is vital for multiple-input-multiple-output (MIMO) systems to complete localization and beamforming tasks. Switched antenna arrays have recently emerged as an effective solution to reduce the cost and…

信号处理 · 电气工程与系统科学 2022-05-24 Hui Chen , Tarig Ballal , Mohammed E. Eltayeb , Tareq Y. Al-Naffouri

Large in the number of transmit elements, multi-antenna arrays with per-element limitations are in the focus of the present work. In this context, physical layer multigroup multicasting under per-antenna power constrains, is investigated…

信息论 · 计算机科学 2016-11-18 Dimitrios Christopoulos , Symeon Chatzinotas , Bjorn Ottersten

The integration of sensing and communication (ISAC) functionalities have recently gained significant research interest as a hardware-, power-, spectrum- and cost- efficient solution. This experimental work focuses on a dual-functional radar…

信号处理 · 电气工程与系统科学 2022-02-10 Tongyang Xu , Fan Liu , Christos Masouros , Izzat Darwazeh

This paper considers base station (BS) cooperation in the form of coordinated beamforming, focusing on min-max fairness in the power usage subject to target SINR constraints. We show that the optimal beamforming strategies have an…

信息论 · 计算机科学 2012-02-06 Randa Zakhour , Stephen V. Hanly

Integrated Sensing and Communication (ISAC) systems promise to revolutionize wireless networks by concurrently supporting high-resolution sensing and high-performance communication. This paper presents a novel radio access technology (RAT)…

信号处理 · 电气工程与系统科学 2024-10-16 Yulan Gao , Ziqiang Ye , Ming Xiao , Yue Xiao

Reconfigurable intelligent surface (RIS) is a promising technology for 6G networks owing to its superior ability to enhance the capacity and coverage of wireless communications by smartly creating a favorable propagation environment. In…

信号处理 · 电气工程与系统科学 2023-01-27 Rang Liu , Ming Li , Yang Liu , Qingqing Wu , Qian Liu

Integrated sensing and communications (ISAC) is an emerging critical technique for the next generation of communication systems. However, due to multiple performance metrics used for communication and sensing, the limited degrees-of-freedom…

信号处理 · 电气工程与系统科学 2024-01-26 Yongqing Xu , Yong Li , J. Andrew Zhang , Marco Di Renzo , Tony Q. S. Quek

The existence of multipath brings extra "looks" of targets. This paper considers the extended target detection problem with a narrow band Multiple-Input Multiple-Output(MIMO) radar in the presence of multipath from the view of…

信号处理 · 电气工程与系统科学 2020-09-29 Zhou Xu , Chongyi Fan , Jian Wang , Xiaotao Huang

In this letter, we consider hybrid beamforming for millimeter wave (mmWave) MIMO integrated sensing and communications (ISAC). We design the transmit beam of a dual-functional radar-communication (DFRC) base station (BS), aiming at…

信号处理 · 电气工程与系统科学 2022-03-15 Chenhao Qi , Wei Ci , Jinming Zhang , Xiaohu You

This review paper examines the concept and advancements in the evolving landscape of Dual-functional Radar Communication (DFRC) systems. Traditionally, radar and communication systems have functioned independently, but current research is…

信号处理 · 电气工程与系统科学 2024-01-02 Ali Hanif , Sajid Ahmed , Tareq Y. Al-Naffouri , Mohamed-Slim Alouin

This paper studies a multi-target multi-user integrated sensing and communication (ISAC) system where a multi-antenna base station (BS) communicates with multiple single-antenna users in the downlink and senses the unknown and random angle…

信息论 · 计算机科学 2025-07-01 Jiayi Yao , Shuowen Zhang