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In this letter, we study a wireless communication system with a fixed-wing unmanned aerial vehicle (UAV) employed to collect information from a group of ground nodes (GNs). Our objective is to maximize the UAV's energy efficiency (EE),…

信息论 · 计算机科学 2019-07-25 Jingwei Zhang , Yong Zeng , Rui Zhang

This paper studies cell-free massive multiple-input multiple-output (CF-mMIMO) systems that underpin simultaneous wireless information and power transfer (SWIPT) for separate information users (IUs) and energy users (EUs) in Internet of…

信息论 · 计算机科学 2025-05-08 Mohammadali Mohammadi , Le-Nam Tran , Zahra Mobini , Hien Quoc Ngo , Michail Matthaiou

In this paper, an interference-aware path planning scheme for a network of cellular-connected unmanned aerial vehicles (UAVs) is proposed. In particular, each UAV aims at achieving a tradeoff between maximizing energy efficiency and…

信息论 · 计算机科学 2019-05-03 Ursula Challita , Walid Saad , Christian Bettstetter

In this paper, we investigate a cell-free massive MIMO system with both access points (APs) and user equipments (UEs) equipped with multiple antennas over jointly-correlated Rayleigh fading channels. We study four uplink implementations,…

信息论 · 计算机科学 2022-03-18 Zhe Wang , Jiayi Zhang , Bo Ai , Chau Yuen , Mérouane Debbah

This paper investigates the combined benefits of full-duplex (FD) and cell-free massive multiple-input multipleoutput (CF-mMIMO), where a large number of distributed access points (APs) having FD capability simultaneously serve numerous…

信号处理 · 电气工程与系统科学 2020-07-10 Hieu V. Nguyen , Van-Dinh Nguyen , Octavia A. Dobre , Shree Krishna Sharma , Symeon Chatzinotas , Björn Ottersten , Oh-Soon Shin

In this paper, we study a cellular-enabled unmanned aerial vehicle (UAV) communication system consisting of one UAV and multiple ground base stations (GBSs). The UAV has a mission of flying from an initial location to a final location,…

信息论 · 计算机科学 2017-11-01 Shuowen Zhang , Yong Zeng , Rui Zhang

With the explosive growth of data traffic and the ubiquitous connectivity of wireless devices, the energy demands of wireless networks have inevitably escalated. Reconfigurable intelligent surface (RIS) has emerged as a promising solution…

信号处理 · 电气工程与系统科学 2025-12-16 Hongyi Luo , Wenyu Song , Daniel K. C. So , Zahra Mobini , Zhiguo Ding

The ever-evolving internet of things (IoT) has led to the growth of numerous wireless sensors, communicating through the internet infrastructure. When designing a network using these sensors, one critical aspect is the longevity and…

网络与互联网体系结构 · 计算机科学 2021-07-23 Alvi Ataur Khalil , Mohamed Y. Selim , Mohammad Ashiqur Rahman

This paper studies a cell-free massive multiple-input multiple-output (MIMO) system where its access points (APs) and users are equipped with multiple antennas. Two transmission protocols are considered. In the first transmission protocol,…

信息论 · 计算机科学 2020-04-27 Trang C. Mai , Hien Quoc Ngo , Trung Q. Duong

In this paper, a novel optimization model for joint beamforming and power control in the downlink (DL) of a cell-free massive MIMO (CFmMIMO) system is presented. The objective of the proposed optimization model is to minimize the maximum…

信息论 · 计算机科学 2021-07-23 Mohamed Elwekeil , Alessio Zappone , Stefano Buzzi

This paper considers cell-free and user-centric approaches for coverage improvement in wireless cellular systems operating at millimeter wave frequencies, and proposes downlink power control algorithms aimed at maximizing the global energy…

信息论 · 计算机科学 2018-05-15 Mario Alonzo , Stefano Buzzi , Alessio Zappone

In this paper, a novel machine learning (ML) framework is proposed for enabling a predictive, efficient deployment of unmanned aerial vehicles (UAVs), acting as aerial base stations (BSs), to provide on-demand wireless service to cellular…

信号处理 · 电气工程与系统科学 2018-05-02 Qianqian Zhang , Mohammad Mozaffari , Walid Saad , Mehdi Bennis , Merouane Debbah

In this paper, we propose a multi-unmanned aerial vehicle (UAV)-assisted integrated sensing, communication, and computation network. Specifically, the treble-functional UAVs are capable of offering communication and edge computing services…

信息论 · 计算机科学 2024-10-08 Sicong Peng , Bin Li , Lei Liu , Zesong Fei , Dusit Niyato

This paper aims to exploit the fundamental limits on the downlink coverage and spatial throughput performances of a cellular network comprised of a tier of unmanned aerial vehicle (UAV) base stations (BSs) using the millimeter wave (mmWave)…

信息论 · 计算机科学 2019-08-21 Chun-Hung Liu , Kai-Hsiang Ho , Jwo-Yuh Wu

Unmanned aerial vehicle (UAV)-assisted mobile edge computing (MEC) system is a prominent concept, where a UAV equipped with a MEC server is deployed to serve a number of terminal devices (TDs) of Internet of Things (IoT) in a finite period.…

信号处理 · 电气工程与系统科学 2020-08-13 Tiankui Zhang , Yu Xu , Jonathan Loo , Dingcheng Yang , Lin Xiao

In cell-free massive multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems, user equipments (UEs) are served by many distributed access points (APs), where channels are correlated due to finite…

信息论 · 计算机科学 2020-11-04 Junyuan Gao , Yongpeng Wu , Yongjian Wang , Wenjun Zhang , Fan Wei

Cellular-connected unmanned aerial vehicles (UAVs) represent a promising technology for extending the coverage of 5G and 6G networks in a cost-effective manner. Additionally, Massive multiple-input multiple-output (MIMO) serves as an…

信号处理 · 电气工程与系统科学 2024-01-01 Byunghyun Lee , Andrew Marcum , David Love , James Krogmeier

One of the most important challenges in the fifth generation (5G) of telecommunication systems is the efficiency of energy and spectrum. Massive multiple-input multiple-output (MIMO) systems have been proposed by researchers to resolve…

信号处理 · 电气工程与系统科学 2023-11-28 Abdolrasoul Sakhaei Gharagezlou , Nima Imani , Mahdi Nangir

Energy efficiency (EE) problem has become an important and major issue in satellite communications. In this paper, we study the beamforming design strategy to maximize the EE of rate-splitting multiple access (RSMA) for the multibeam…

信息论 · 计算机科学 2023-03-22 Jinyuan Liu , Yong Liang Guan , Yao Ge , Longfei Yin , Bruno Clerckx

The emerging cell-free massive multiple-input multiple-output (CF-mMIMO) is a promising scheme to tackle the capacity crunch in wireless networks. Designing the optimal fronthaul network in the CF-mMIMIO is of utmost importance to deploy a…

信息论 · 计算机科学 2021-03-10 Pouya Agheli , Mohammad Javad Emadi , Hamzeh Beyranvand