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Millimeter wave/Terahertz (mmWave/THz) communication with extremely large-scale antenna arrays (ELAAs) offers a promising solution to meet the escalating demand for high data rates in next-generation communications. A large array aperture,…

Signal Processing · Electrical Eng. & Systems 2024-09-30 Hongwei Wang , Jun Fang , Huiping Duan , Hongbin Li

6G networks will be required to support higher data rates, improved energy efficiency, lower latency, and more diverse users compared with 5G systems. To meet these requirements, electrically extremely large-scale antenna arrays are…

Signal Processing · Electrical Eng. & Systems 2022-12-13 Haiyang Zhang , Nir Shlezinger , Francesco Guidi , Davide Dardari , Yonina C. Eldar

In this article, we present our vision for how extremely large aperture arrays (ELAAs), equipped with hundreds or thousands of antennas, can play a major role in future 6G networks by enabling a remarkable increase in data rates through…

Signal Processing · Electrical Eng. & Systems 2023-10-23 Parisa Ramezani , Alva Kosasih , Amna Irshad , Emil Björnson

Extremely large-scale antenna arrays (ELAAs) enable high spatial resolution and multiplexing, especially for user equipments (UEs) in the radiative near-field. To reduce hardware cost, modular ELAA architectures with distributed baseband…

Signal Processing · Electrical Eng. & Systems 2025-09-23 Özlem Tuğfe Demir , Emil Björnson

Near-field channel estimation is a fundamental challenge in the sixth-generation (6G) wireless communication, where extremely large antenna arrays (ELAA) enable near-field communication (NFC) but introduce significant signal processing…

Signal Processing · Electrical Eng. & Systems 2025-05-21 Vu Tung Lam , Do Hai Son , Tran Thi Thuy Quynh , Le Trung Thanh

Six-dimensional movable antenna (6DMA) has been identified as a new disruptive technology for future wireless systems to support a large number of users with only a few antennas. However, the intricate relationships between the signal…

Information Theory · Computer Science 2025-06-23 Xiaodan Shao , Limei Hu , Yulong Sun , Xing Li , Yixiao Zhang , Jingze Ding , Xiaoming Shi , Feng Chen , Derrick Wing Kwan Ng , Robert Schober

Extremely large antenna array (ELAA) is key to enhancing spectral efficiency in 6G networks. Leveraging the distributed nature of multi-unmanned aerial vehicle (UAV) systems enables the formation of distributed ELAA, which often operate in…

Signal Processing · Electrical Eng. & Systems 2025-09-10 Tianyu Huo , Jian Xiong , Yiyan Wu , Songjie Yang , Bo Liu , Wenjun Zhang

One of the most relevant challenges in future 6G wireless networks is how to support a massive spatial multiplexing of a large number of user terminals. Recently, extremely large antenna arrays (ELAAs), also referred to as extra-large MIMO…

Information Theory · Computer Science 2023-12-01 Adrian Agustin , Xavier Mestre

The employment of extremely large antenna arrays and high-frequency signaling makes future 6G wireless communications likely to operate in the near-field region. In this case, the spherical wave assumption which takes into account both the…

Signal Processing · Electrical Eng. & Systems 2022-12-29 Xing Zhang , Haiyang Zhang , Yonina C. Eldar

Extremely large-scale antenna arrays, tremendously high frequencies, and new types of antennas are three clear trends in multi-antenna technology for supporting the sixth-generation (6G) networks. To properly account for the new…

Information Theory · Computer Science 2024-09-09 Yuanwei Liu , Zhaolin Wang , Jiaqi Xu , Chongjun Ouyang , Xidong Mu , Robert Schober

Near-field communication comes to be an indispensable part of the future sixth generation (6G) communications at the arrival of the forth-coming deployment of extremely large-scale multiple-input-multiple-output (XL-MIMO) systems. Due to…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Haochen Wu , Liyang Lu , Zhaocheng Wang

Extremely large antenna arrays (ELAAs) are widely adopted in mmWave/THz communications to compensate for the severe path loss, wherein the channel estimation remains a significant challenge since the Rayleigh distance of ELAAs stretches to…

Signal Processing · Electrical Eng. & Systems 2026-03-17 Yiming Chen , Hongwei Wang , Lingxiang Li , Zhi Chen

Extremely large-scale antenna array (ELAA) systems emerge as a promising technology in beyond 5G and 6G wireless networks to support the deployment of distributed architectures. This paper explores the use of ELAAs to enable joint…

Terahertz (THz) band owning the abundant multi-ten-GHz bandwidth is capable to support Terabit-per-second wireless communications, which is a pillar technology for 6G and beyond systems. With sub-millimeter-long antennas, ultra-massive (UM)…

Information Theory · Computer Science 2023-08-04 Chong Han , Yuhang Chen , Longfei Yan , Zhi Chen , Linglong Dai

Near-field beamfocusing enabled by extremely large-aperture arrays (ELAA) is a promising 6G technique for massive connectivity and high spectrum efficiency. While beamfocusing concentrates energy at an intended user, the radiated field…

Information Theory · Computer Science 2026-05-26 Shima Mashhadi , Tiep M. Hoang , Alireza Vahid

While fifth-generation (5G) communications are being rolled out worldwide, sixth-generation (6G) communications have attracted much attention from both the industry and the academia. Compared with 5G, 6G will have a wider frequency band,…

Signal Processing · Electrical Eng. & Systems 2021-02-17 Yang Zhao , Wenchao Zhai , Jun Zhao , Tinghao Zhang , Sumei Sun , Dusit Niyato , Kwok-Yan Lam

Extremely large-scale antenna arrays (ELAA) play a critical role in enabling the functionalities of next generation wireless communication systems. However, as the number of antennas increases, ELAA systems face significant bottlenecks,…

Information Theory · Computer Science 2025-02-10 Yanqing Xu , Erik G. Larsson , Eduard A. Jorswieck , Xiao Li , Shi Jin , Tsung-Hui Chang

Electromagnetic information theory (EIT) is one of the emerging topics for 6G communication due to its potential to reveal the performance limit of wireless communication systems. For EIT, the research foundation is reasonable and accurate…

Information Theory · Computer Science 2024-05-28 Zhongzhichao Wan , Jieao Zhu , Linglong Dai

As 6G research advances, the growing demand leads to the emergence of novel technologies such as integrated sensing and communication (ISAC), new antenna arrays like extremely large MIMO (XL-MIMO) and reconfigurable intelligent surfaces…

Signal Processing · Electrical Eng. & Systems 2025-06-16 Huiwen Gong , Jianhua Zhang , Yuxiang Zhang , Guangyi Liu

While the 5G cellular system is being deployed worldwide, researchers have started the investigation of the 6G mobile communication networks. Although the essential requirements and key usage scenarios of 6G are yet to be defined, it is…

Signal Processing · Electrical Eng. & Systems 2020-06-03 Zhiqiang Xiao , Yong Zeng