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An unmanned aerial vehicle (UAV)-aided mobile edge computing (MEC) framework is proposed, where several UAVs having different trajectories fly over the target area and support the user equipments (UEs) on the ground. We aim to jointly…

信号处理 · 电气工程与系统科学 2020-09-24 Liang Wang , Kezhi Wang , Cunhua Pan , Wei Xu , Nauman Aslam , Lajos Hanzo

In this paper, a deep reinforcement learning (DRL) method is proposed to address the problem of UAV navigation in an unknown environment. However, DRL algorithms are limited by the data efficiency problem as they typically require a huge…

机器人学 · 计算机科学 2020-08-07 Lei He , Nabil Aouf , James F. Whidborne , Bifeng Song

This study investigates the integration of an intelligent reflecting surface (IRS) into an unmanned aerial vehicle (UAV) platform to utilize the advantages of these leading technologies for sixth-generation communications, e.g., improved…

信号处理 · 电气工程与系统科学 2024-05-22 Hung Nguyen-Kha , Hieu V. Nguyen , Mai T. P. Le , Oh-Soon Shin

A novel framework of reconfigurable intelligent surfaces (RISs)-enhanced indoor wireless networks is proposed, where an RIS mounted on the robot is invoked to enable mobility of the RIS and enhance the service quality for mobile users.…

网络与互联网体系结构 · 计算机科学 2021-05-21 Ruikang Zhong , Xiao Liu , Yuanwei Liu , Yue Chen , Zhu Han

In this chapter, the regulation of Unmanned Aerial Vehicle (UAV) communication network is investigated in the presence of dynamic changes in the UAV lineup and user distribution. We target an optimal UAV control policy which is capable of…

系统与控制 · 电气工程与系统科学 2021-08-26 Ran Zhang , Duc Minh , Nguyen , Miao Wang , Lin X. Cai , Xuemin , Shen

This paper explores the potential of aerial reconfigurable intelligent surfaces (ARIS) to enhance coordinated multi-point non-orthogonal multiple access (CoMP-NOMA) networks. We consider a system model where a UAV-mounted RIS assists in…

信号处理 · 电气工程与系统科学 2024-11-05 Muhammad Umer , Muhammad Ahmed Mohsin , Aamir Mahmood , Kapal Dev , Haejoon Jung , Mikael Gidlund , Syed Ali Hassan

This paper explores the method of achieving autonomous navigation of unmanned vehicles through Deep Reinforcement Learning (DRL). The focus is on using the Deep Deterministic Policy Gradient (DDPG) algorithm to address issues in…

机器人学 · 计算机科学 2024-07-30 Letian Xu , Jiabei Liu , Haopeng Zhao , Tianyao Zheng , Tongzhou Jiang , Lipeng Liu

Intelligent reflecting surface (IRS) is a new and disruptive technology to achieve spectrum- and energy-efficient as well as cost-efficient wireless networks. This paper considers an IRS-assisted downlink non-orthogonal-multiple-access…

信息论 · 计算机科学 2020-01-01 Gang Yang , Xinyue Xu , Ying-Chang Liang

In this paper, we study the resource allocation problem for an intelligent reflecting surface (IRS)-assisted OFDM system. The system sum rate maximization framework is formulated by jointly optimizing subcarrier allocation, base station…

网络与互联网体系结构 · 计算机科学 2022-02-11 Wei Wu , Fengchun Yang , Fuhui Zhou , Han Hu , Qihui Wu , Rose Qingyang Hu

Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is a novel technology which enables the full-space coverage. In this letter, a multi-active STAR-RIS-aided system using non-orthogonal multiple access…

信息论 · 计算机科学 2025-01-07 Sepideh Javadi , Armin Farhadi , Mohammad Robat Mili , Eduard Jorswieck , Naofal Al-Dhahir

Unmanned aerial vehicles (UAVs) can be utilized as aerial base stations (ABSs) to assist terrestrial infrastructure for keeping wireless connectivity in various emergency scenarios. To maximize the coverage rate of N ground users (GUs) by…

信息论 · 计算机科学 2020-02-06 Jin Qiu , Jiangbin Lyu , Liqun Fu

Intelligent reflecting surfaces (IRSs) technology has been considered a promising solution in visible light communication (VLC) systems due to its potential to overcome the line-of-sight (LoS) blockage issue and enhance coverage. Moreover,…

信号处理 · 电气工程与系统科学 2025-04-29 Ahrar N. Hamad , Ahmad Adnan Qidan , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

Reconfigurable intelligent surfaces (RISs) enhance unmanned aerial vehicles (UAV)-assisted communication by extending coverage, improving efficiency, and enabling adaptive beamforming. This paper investigates a multiple-input single-output…

信息论 · 计算机科学 2025-10-28 Mahmoud M. Salim , Khaled M. Rabie , Ali H. Muqaibel

Intelligent reflecting surfaces (IRSs) are envisioned to provide reconfigurable wireless environments for future communication networks. In this paper, both downlink and uplink IRS-aided non-orthogonal multiple access (NOMA) and orthogonal…

信号处理 · 电气工程与系统科学 2021-02-05 Yanyu Cheng , Kwok Hung Li , Yuanwei Liu , Kah Chan Teh , H. Vincent Poor

This paper investigates the unmanned aerial vehicle (UAV)-assisted resilience perspective in the 6G network energy saving (NES) scenario. More specifically, we consider multiple ground base stations (GBSs) and each GBS has three different…

网络与互联网体系结构 · 计算机科学 2026-04-08 Dao Lan Vy Dinh , Anh Nguyen Thi Mai , Hung Tran , Giang Quynh Le Vu , Tu Dac Ho , Zhenni Pan , Vo Nhan Van , Symeon Chatzinotas , Dinh-Hieu Tran

Low altitude uncrewed aerial vehicles (UAVs) are expected to facilitate the development of aerial-ground integrated intelligent transportation systems and unlocking the potential of the emerging low-altitude economy. However, several…

网络与互联网体系结构 · 计算机科学 2025-07-29 Zhang Liu , Lianfen Huang , Zhibin Gao , Xianbin Wang , Dusit Niyato , Xuemin , Shen

Simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) has been considered as a promising auxiliary device to enhance the performance of the wireless network, where users located at the different sides of…

信息论 · 计算机科学 2021-12-01 Yi Guo , Fang Fang , Donghong Cai , Zhiguo Ding

The deep reinforcement learning (DRL) based Volt-VAR optimization (VVO) methods have been widely studied for active distribution networks (ADNs). However, most of them lack safety guarantees in terms of power injection uncertainties due to…

系统与控制 · 电气工程与系统科学 2024-09-30 Zhengrong Chen , Siyao Cai , A. P. Sakis Meliopoulos

A novel reconfigurable intelligent surface (RIS) aided non-orthogonal multiple access (NOMA) downlink transmission framework is proposed. We formulate a long-term stochastic optimization problem that involves a joint optimization of NOMA…

信息论 · 计算机科学 2021-01-06 Zhong Yang , Yuanwei Liu , Yue Chen , Naofal Al-Dhahir

Unmanned aerial vehicle (UAV)-based base stations offer a promising solution in emergencies where the rapid deployment of cutting-edge networks is crucial for maximizing life-saving potential. Optimizing the strategic positioning of these…

人工智能 · 计算机科学 2025-04-08 Mario Rico Ibanez , Azim Akhtarshenas , David Lopez-Perez , Giovanni Geraci