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One of the use cases for 5G systems and beyond is ultra-reliability low-latency communication (URLLC). An enabling technology for URLLC is massive multiple-input multiple-output (MIMO), which can increase reliability due to improved user…

Information Theory · Computer Science 2022-11-18 Sara Willhammar , Liesbet Van der Perre , Fredrik Tufvesson

Current cellular systems achieve high spectral efficiency through Massive MIMO, which leverages an abundance of antennas to create favorable propagation conditions for multiuser spatial multiplexing. Looking towards future networks, the…

Information Theory · Computer Science 2026-01-14 Emil Björnson , Amna Irshad , Özlem Tugfe Demir , Giuseppe Thadeu Freitas de Abreu , Alva Kosasih , Vitaly Petrov

Intelligent reflecting surface (IRS) is a promising technology to extend the wireless signal coverage and support the high performance communication. By intelligently adjusting the reflection coefficients of a large number of passive…

Information Theory · Computer Science 2021-03-01 Yitao Han , Shuowen Zhang , Lingjie Duan , Rui Zhang

Near-field localization for ISAC requires large-aperture arrays, making fully-digital implementations prohibitively complex and costly. While sparse subarray architectures can reduce cost, they introduce severe estimation ambiguity from…

Signal Processing · Electrical Eng. & Systems 2026-01-30 Sai Pavan Deram , Jacopo Pegoraro , Javier Lorca Hernando , Jesus O. Lacruz , Joerg Widmer

An integrated sensing and communication (ISAC) framework comprises radar sensing to enable reliable direction beam-based communication between a base station (BS) and mobile user (MU). The ISAC will be an integral part of 6G with potential…

Signal Processing · Electrical Eng. & Systems 2026-03-10 Jai Mangal , Sumit Darak , Shobha Sundar Ram

Integrated sensing and communication (ISAC) has attracted growing interests for enabling the future 6G wireless networks, due to its capability of sharing spectrum and hardware resources between communication and sensing systems. However,…

Information Theory · Computer Science 2025-01-27 Renwang Li , Xiaodan Shao , Shu Sun , Meixia Tao , Rui Zhang

There is considerable interest in the combined use of millimeter-wave (mmwave) frequencies and arrays of massive numbers of antennas (massive MIMO) for next-generation wireless communications systems. A symbiotic relationship exists between…

Information Theory · Computer Science 2017-12-19 Amine Mezghani , A. Lee Swindlehurst

Holographic multiple-input and multiple-output (MIMO) communications introduce innovative antenna array configurations, such as dense arrays and volumetric arrays, which offer notable advantages over conventional planar arrays with…

Signal Processing · Electrical Eng. & Systems 2025-06-09 Shuai S. A. Yuan , Li Wei , Xiaoming Chen , Chongwen Huang , Wei E. I. Sha

A radar and communication integration (RCI) system has great flexibility in allocating antenna resources to guarantee both radar and communication performance. This paper considers the array allocation problems for multiple target…

Signal Processing · Electrical Eng. & Systems 2020-10-09 Zhenkai Zhang , Hamid Esmaeili Najafabadi , Henry Leung

A holographic multiple-input multiple-output (MIMO)-based integrated sensing and communications (ISAC) framework is proposed for both downlink and uplink scenarios. The spatial correlation is incorporated into the communication channel…

Information Theory · Computer Science 2025-01-16 Boqun Zhao , Chongjun Ouyang , Xingqi Zhang , Yuanwei Liu

In conventional multiple-input multiple-output (MIMO), static array configurations struggle in dynamic environments, and further antenna scaling is bounded by cost, energy, and footprint. Emerging approaches, which can enable…

Information Theory · Computer Science 2025-11-11 Zhe Wang , Jiayi Zhang , Bokai Xu , Wenhui Yi , Emil Björnson , Bo Ai

Integrated sensing and communication (ISAC) technology is crucial for next-generation underwater networks. However, covering multiple users and targets and balancing sensing and communication performance in complex underwater acoustic (UWA)…

Networking and Internet Architecture · Computer Science 2025-12-16 Wei Men , Longfei Zhao , Yong Liang Guan , Xiangwang Hou , Yong Ren , Dusit Niyato

Integrated sensing and communication (ISAC) is poised to be a defining feature of 6G networks, promising to transform cellular base stations (BSs) into ubiquitous radar sensors. However, a significant gap exists between the theoretical…

Signal Processing · Electrical Eng. & Systems 2026-04-27 Henglin Pu , Husheng Li

Accurate 3D localization is essential for realizing advanced sensing functionalities in next-generation Wi-Fi communication systems. This study investigates the potential of multistatic localization in Wi-Fi networks through the deployment…

Systems and Control · Electrical Eng. & Systems 2025-05-28 Fuhai Wang , Zhe Li , Rujing Xiong , Tiebin Mi , Robert Caiming Qiu

To efficiently utilize the wireless spectrum and save hardware costs, the fifth generation and beyond (B5G) wireless networks envisage integrated sensing and communications (ISAC) paradigms to jointly access the spectrum. In B5G systems,…

Signal Processing · Electrical Eng. & Systems 2024-08-20 Ahmet M. Elbir , Kumar Vijay Mishra , Abdulkadir Çelik , Ahmed M. Eltawil

Integrated sensing and communication (ISAC) and ubiquitous connectivity are two usage scenarios of sixth generation (6G) networks. In this context, low earth orbit (LEO) satellite constellations, as an important component of 6G networks, is…

Information Theory · Computer Science 2025-01-14 Qi Wang , Xiaoming Chen , Qiao Qi , Mili Li , Wolfgang Gerstacker

In the past ten years, there have been tremendous research progresses on massive MIMO systems, most of which stand from the communications viewpoint. A new trend of investigating massive MIMO, especially for the sparse scenario like…

Signal Processing · Electrical Eng. & Systems 2019-10-23 Mingjin Wang , Feifei Gao , Shi Jin , Hai Lin

Integrated sensing and communication (ISAC) is an enabling technology for the sixth-generation mobile communications, which equips the wireless communication networks with sensing capabilities. In this paper, we investigate transmit…

Signal Processing · Electrical Eng. & Systems 2024-06-19 Chunwei Meng , Zhiqing Wei , Dingyou Ma , Wanli Ni , Liyan Su , Zhiyong Feng

We present an analytical scheme for designing metagrating-enhanced sparse antenna arrays. Unlike previous work, the proposed method does not involve time-consuming cost function optimizations, complex structural manipulations on the active…

Applied Physics · Physics 2023-02-01 Yaniv Kerzhner , Ariel Epstein

Prior works have explored multi-armed bandit (MAB) algorithms for the selection of optimal beams for millimeter-wave (mmW) communications between base station and mobile users. However, when the number of beams is large, the existing MAB…

Signal Processing · Electrical Eng. & Systems 2026-02-10 Akanksha Sneh , Shobha Sundar Ram , Sumit J Darak , Aakanksha Tewari