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This paper proposes a new architecture for the low-earth orbit (LEO) satellite ground station aided by movable antenna (MA) array. Unlike conventional fixed-position antenna (FPA), the MA array can flexibly adjust antenna positions to…

信号处理 · 电气工程与系统科学 2025-09-10 Jinming Wang , Lipeng Zhu , Shuai Han , He Sun , Rui Zhang

Extremely large-scale array (XL-array) communications can significantly improve the spectral efficiency and spatial resolution, and has great potential in next-generation mobile communication networks. A crucial problem in XL-array…

信息论 · 计算机科学 2023-01-18 Renwang Li , Shu Sun , Meixia Tao

The recent trends of densification and centralized signal processing in radio access networks suggest that future networks may comprise ubiquitous antennas coordinated to form a network-wide gigantic array, referred to as the ubiquitous…

信息论 · 计算机科学 2015-04-01 Kaibin Huang , Jiayi Chen , Vincent K. N. Lau

Extremely large aperture array (ELAA) is anticipated to serve as a pivotal feature of future multiple-input multiple-output (MIMO) systems in 6G. Near-field (NF) fading channel models are essential for reliable link-level simulation and…

信息论 · 计算机科学 2024-10-28 Jiuyu Liu , Yi Ma , Ahmed Elzanaty , Rahim Tafazolli

Extremely large-scale multi-input multi-output (XL-MIMO) is a promising technology for the sixth generation (6G) wireless networks, thanks to its superior spatial resolution and beamforming gains. In order to realize XL-MIMO…

信号处理 · 电气工程与系统科学 2025-12-09 Xuancheng Zhu , Zhiwen Zhou , Zhenjun Dong , Yong Zeng

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…

信号处理 · 电气工程与系统科学 2025-09-10 Tianyu Huo , Jian Xiong , Yiyan Wu , Songjie Yang , Bo Liu , Wenjun Zhang

The natural integration of extremely large antenna arrays (ELAAs) and terahertz (THz) communications can potentially achieve Tbps data rates in 6G networks. However, due to the extremely large array aperture and wide bandwidth, a new…

信息论 · 计算机科学 2024-06-04 Mingyao Cui , Linglong Dai

The number of users that can be spatially multiplexed by a wireless access point depends on the aperture of its antenna array. When the aperture increases and wavelength shrinks, "new" electromagnetic phenomena can be utilized to further…

信息论 · 计算机科学 2022-09-08 Parisa Ramezani , Emil Björnson

We propose a novel distributed expectation maximization (EM) method for non-cooperative RF device localization using a wireless sensor network. We consider the scenario where few or no sensors receive line-of-sight signals from the target.…

信息论 · 计算机科学 2014-08-15 Wenjie Xu , Francois Quitin , Mei Leng , Wee Peng Tay , Sirajudeen G. Razul

In this paper, we study the joint resource allocation algorithm design for downlink and uplink multicarrier transmission assisted by a shared user equipment (UE)-side distributed antenna system (SUDAS). The proposed SUDAS simultaneously…

信息论 · 计算机科学 2015-06-25 Derrick Wing Kwan Ng , Marco Breiling , Christian Rohde , Frank Burkhardt , Robert Schober

This paper studies joint spectrum allocation and user association in large heterogeneous cellular networks. The objective is to maximize some network utility function based on given traffic statistics collected over a slow timescale,…

信息论 · 计算机科学 2018-10-17 Binnan Zhuang , Dongning Guo , Ermin Wei , Michael L. Honig

This paper uses a spatial Aloha model to describe a distributed autonomous wireless network in which a group of transmit-receive pairs (users) shares a common collision channel via slotted-Aloha-like random access. The objective of this…

信息论 · 计算机科学 2016-11-17 Jiangbin Lyu , Yong Huat Chew , Wai-Choong Wong

Dynamic metasurface antennas (DMAs) represent a novel transceiver array architecture for extremely large-scale (XL) communications, offering the advantages of reduced power consumption and lower hardware costs compared to conventional…

信号处理 · 电气工程与系统科学 2024-07-09 Songjie Yang , Wanting Lyu , Boyu Ning , Yue Xiu , Youzhi Xiong , Hua Chen , Chadi Assi , Chau Yuen

Massive multiple-input multiple-output (MIMO) for 5G is evolving into the extremely large-scale antenna array (ELAA) to increase the spectrum efficiency by orders of magnitude for 6G communications. ELAA introduces spherical-wave-based…

信息论 · 计算机科学 2023-10-31 Zidong Wu , Mingyao Cui , Linglong Dai

This paper studies the uplink spectral efficiency (SE) achieved by two single-antenna user equipments (UEs) communicating with a Large Intelligent Surface (LIS), defined as a planar array consisting of $N$ antennas that each has area $A$.…

信号处理 · 电气工程与系统科学 2020-11-30 Andrea de Jesus Torres , Luca Sanguinetti , Emil Björnson

This paper investigates a movable-antenna (MA) array empowered integrated sensing and communications (ISAC) over low-altitude platform (LAP) system to support low-altitude economy (LAE) applications. In the considered system, an unmanned…

信号处理 · 电气工程与系统科学 2024-07-23 Ziming Kuang , Wenchao Liu , Chunjie Wang , Zhenzhen Jin , Jinke Ren , Xuhui Zhang , Yanyan Shen

In this paper, we propose a distributed flexible coupler antenna (FCA) array to enhance communication performance with low hardware cost. At each FCA, there is one fixed-position active antenna and multiple passive couplers that can move…

信息论 · 计算机科学 2026-04-03 Xiaodan Shao , Chuangye Shan , Weihua Zhuang , Xuemin Shen

In this paper, we investigate reconfigurable pixel antenna (RPA)-based electronic movable antennas (REMAs) for multiuser communications. First, we model each REMA as an antenna characterized by a set of predefined and discrete selectable…

信息论 · 计算机科学 2025-04-02 Kangjian Chen , Chenhao Qi , Yujing Hong , Chau Yuen

LTE-Licensed Assisted Access (LAA) networks are beginning to be deployed widely in major metropolitan areas in the US in the unlicensed 5 GHz bands, which have existing dense deployments of Wi-Fi. This provides a real-world opportunity to…

网络与互联网体系结构 · 计算机科学 2021-04-02 Vanlin Sathya , Muhammad Iqbal Rochman , Monisha Ghosh

This paper investigates single-snapshot direction-of-arrival (DOA) estimation and target localization with coherent sparse extremely large aperture arrays (ELAAs) in automotive radar applications. Far-field and near-field signal models are…

信号处理 · 电气工程与系统科学 2025-09-23 Yunqiao Hu , Xuesu Xiao , Steven Jones , Shunqiao Sun