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Extremely large-scale multiple-input multiple-output (XL-MIMO) is a promising technique to enable versatile applications for future wireless communications.To realize the huge potential performance gain, accurate channel state information…

信息论 · 计算机科学 2023-09-06 Hao Lei , Jiayi Zhang , Huahua Xiao , Xiaodan Zhang , Bo Ai , Derrick Wing Kwan Ng

Massive multiple-input-multiple-output (M-MIMO) is a key technology for 5G networks. Within this research area, new types of deployment are arising, such as the extremely-large regime (XL- MIMO), where the antenna array at the base station…

信号处理 · 电气工程与系统科学 2020-09-08 Gabriel Avanzi Ubiali , Taufik Abrão

Fully digital massive MIMO systems with large numbers (1000+) of antennas offer dramatically increased capacity gains from spatial multiplexing and beamforming. Designing digital receivers that can scale to these array dimensions presents…

信号处理 · 电气工程与系统科学 2026-04-23 Ali Rasteh , Amirreza Kiani , Marco Mezzavilla , Sundeep Rangan

Near-field propagation in extremely large-scale MIMO (XL-MIMO) enlarges the beam training (BT) search space by introducing an additional range dimension, which makes conventional codebook-based beam sweeping prohibitively expensive under…

信号处理 · 电气工程与系统科学 2026-03-13 Xinyang Li , Songjie Yang , Xiang Ling , Jianhui Song , Yibo Wang , Hua Chen

This paper is to design and optimize a non-orthogonal and noncoherent massive multiple-input multiple-output (MIMO) framework towards enabling scalable ultra-reliable low-latency communications (sURLLC) in wireless systems beyond 5G. In…

信号处理 · 电气工程与系统科学 2020-02-19 He Chen , Zheng Dong , Jian-Kang Zhang , Branka Vucetic

In this paper, a Full Duplex (FD) eXtremely Large (XL) Multiple-Input Multiple-Output (MIMO) node equipped with reconfigurable metasurface antennas at its transmission and reception sides is considered, which is optimized for simultaneous…

信号处理 · 电气工程与系统科学 2024-11-18 Ioannis Gavras , George C. Alexandropoulos

Massive multiple-input multiple-output (MIMO) has been a critical enabling technology in 5th generation (5G) wireless networks. With the advent of 6G, a natural evolution is to employ even more antennas, potentially an order of magnitude…

信号处理 · 电气工程与系统科学 2024-08-13 Wentao Yu , Yifan Ma , Hengtao He , Shenghui Song , Jun Zhang , Khaled B. Letaief

Many concepts for future generations of wireless communication systems use coherent processing of signals from many distributed antennas. The aim is to improve communication reliability, capacity, and energy efficiency and provide…

Multiple-input multiple-output (MIMO) systems with a large number of basestation antennas, often called massive MIMO, have received much attention in academia and industry as a means to improve the spectral efficiency, energy efficiency,…

Network densification, massive multiple-input multiple-output (MIMO) and millimeter-wave (mmWave) bands have recently emerged as some of the physical layer enablers for the future generations of wireless communication networks (5G and…

信号处理 · 电气工程与系统科学 2019-02-21 Guillem Femenias , Felip Riera-Palou

Deploying antenna arrays with an asymptotically large aperture will be central to achieving the theoretical gains of massive MIMO in beyond-5G systems. Such extra-large MIMO (XL-MIMO) systems experience propagation conditions which are not…

信息论 · 计算机科学 2021-03-02 Lucas N. Ribeiro , Stefan Schwarz , Martin Haardt

In this paper, we investigate multi-user modular extremely large-scale multiple-input multiple-output (XL-MIMO) communication systems, where modular extremely large-scale uniform linear array (XL-ULA) is deployed at the base station (BS) to…

信息论 · 计算机科学 2023-08-24 Xinrui Li , Zhenjun Dong , Yong Zeng , Shi Jin , Rui Zhang

This paper explores the integration of simultaneous wireless information and power transfer (SWIPT) with gigantic multiple-input multiple-output (gMIMO) technology operating in the upper mid-band frequency range (7-24 GHz). The near-field…

信号处理 · 电气工程与系统科学 2025-11-03 Özlem Tugfe Demir , Mustafa Ozger , Ferdi Kara , Woong-Hee Lee , Emil Björnson

Massive multiple-input multiple-output (MIMO) systems achieve high sum spectral efficiency by offering an order of magnitude increase in multiplexing gains. In time division duplexing systems, however, the reuse of uplink training pilots…

信息论 · 计算机科学 2016-10-14 Ahmed Alkhateeb , Geert Leus , Robert W. Heath

Extremely large-scale multiple-input multiple-output (XL-MIMO) is capable of supporting extremely high system capacities with large numbers of users. In this work, we build a framework for the analysis and low-complexity design of XL-MIMO…

信号处理 · 电气工程与系统科学 2023-10-13 Kangda Zhi , Cunhua Pan , Hong Ren , Kok Keong Chai , Cheng-Xiang Wang , Robert Schober , Xiaohu You

This paper considers the implementation and application possibilities of a compact full duplex multiple-input multiple-output (MIMO) architecture where direct communication exists between users, e.g., device-to-device (D2D) and cellular…

信息论 · 计算机科学 2017-03-27 MinKeun Chung , Min Soo Sim , Dong Ku Kim , Chan-Byoung Chae

Extremely large-scale multiple-input multiple-output (XL-MIMO) is the development trend of future wireless communications. However, the extremely large-scale antenna array could bring inevitable nearfield and dual-wideband effects that…

信息论 · 计算机科学 2024-09-13 Jie Xu , Li You , George C. Alexandropoulos , Xinping Yi , Wenjin Wang , Xiqi Gao

MIMO mobile systems, with a large number of antennas at the base-station side, enable the concurrent transmission of multiple, spatially separated information streams and, therefore, enable improved network throughput and connectivity both…

信息论 · 计算机科学 2021-01-06 Konstantinos Nikitopoulos , Marcin Filo , Chathura Jayawardena , Rahim Tafazolli

Distributed massive MIMO (D-MIMO) is a promising technology for future generation wireless systems as it takes advantage of both an increased array aperture and a decentralized processing architecture and topology. In order to truly…

Large-scale distributed Multiuser MIMO (MU-MIMO) is a promising wireless network architecture that combines the advantages of "massive MIMO" and "small cells." It consists of several Access Points (APs) connected to a central server via a…