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This paper studies the problem of distributed spectrum/channel access for cognitive radio-enabled unmanned aerial vehicles (CUAVs) that overlay upon primary channels. Under the framework of cooperative spectrum sensing and opportunistic…

Networking and Internet Architecture · Computer Science 2022-02-24 Weiheng Jiang , Wanxin Yu , Wenbo Wang , Tiancong Huang

Ultra-dense (UD) wireless networks and cloud radio access networks (CRAN) are two promising network architectures for the emerging fifth-generation (5G) wireless communication systems. By jointly employing them, a new appealing network…

Information Theory · Computer Science 2017-02-09 Reuben George Stephen , Rui Zhang

In the current unmanned aircraft systems (UASs) for sensing services, unmanned aerial vehicles (UAVs) transmit their sensory data to terrestrial mobile devices over the unlicensed spectrum. However, the interference from surrounding…

Signal Processing · Electrical Eng. & Systems 2020-03-13 F. Wu , H. Zhang , J. Wu , L. Song

The main goal of routing protocol is to efficiency delivers data from source to destination. All routing protocols are the same in this goal, but the way they adopt to achieve it is different, so routing strategy has an egregious role on…

Networking and Internet Architecture · Computer Science 2008-02-06 Kazem Jahanbakhsh , Marzieh Hajhosseini

In this paper, we study a cellular-connected unmanned aerial vehicle (UAV) which aims to fly between two predetermined locations while maintaining ultra-reliable low-latency communications (URLLC) for command-and-control (C2) links with…

Systems and Control · Electrical Eng. & Systems 2025-11-18 Yuqi Ping , Tingting Zhang , Tianhao Liang

Unmanned aerial vehicles (UAVs) have gained a lot of popularity in diverse wireless communication fields. They can act as high-altitude flying relays to support communications between ground nodes due to their ability to provide…

Signal Processing · Electrical Eng. & Systems 2018-08-01 Hakim Ghazzai , Mahdi Ben Ghorbel , Andreas Kassler , Md. Jahangir Hossain

Molecular Communications via Diffusion (MCvD) is a promising paradigm which enables nano-machines to communicate with each other. However, the reliability of existing systems degrade rapidly as the distance between the transmitters and the…

Signal Processing · Electrical Eng. & Systems 2018-04-05 Ghazaleh Ardeshiri , Ali Jamshidi , Alireza Keshavarz-Haddad

The connectivity of public-safety mobile users (MU) in the co-existence of a public-safety network (PSN), unmanned aerial vehicles (UAVs), and LTE-based railway networks (LRN) needs a thorough investigation. UAVs are deployed as mobile base…

Signal Processing · Electrical Eng. & Systems 2023-01-25 Ishtiaq Ahmad , Aftab Hussain

Backscatter communication (BC) becomes a promising energy-efficient solution for future wireless sensor networks (WSNs). Unmanned aerial vehicles (UAVs) enable flexible data collection from remote backscatter devices (BDs), yet conventional…

Signal Processing · Electrical Eng. & Systems 2024-11-22 Yu Bai , Boxuan Xie , Ruifan Zhu , Zheng Chang , Riku Jantti

The integration of Unmanned Aerial Vehicles (UAVs) into Open Radio Access Networks (O-RAN) enhances communication in disaster management and Search and Rescue (SAR) operations by ensuring connectivity when infrastructure fails. However, SAR…

Cryptography and Security · Computer Science 2025-10-22 Zaineh Abughazzah , Emna Baccour , Loay Ismail , Amr Mohamed , Mounir Hamdi

In time division duplexing (TDD) millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems, downlink channel state information (CSI) can be obtained from uplink channel estimation thanks to channel reciprocity. However,…

Signal Processing · Electrical Eng. & Systems 2025-01-13 Binggui Zhou , Xi Yang , Shaodan Ma , Feifei Gao , Guanghua Yang

The low-altitude networks (LANs) integrating unmanned aerial vehicles (UAVs) and high-altitude platforms (HAPs) have become a promising solution for the rising computation demands. However, the uncertain task sizes and high mobility of UAVs…

Computational Engineering, Finance, and Science · Computer Science 2025-10-28 Guanwang Jiang , Ziye Jia , Can Cui , Lijun He , Qiuming Zhu , Qihui Wu

The coded caching scheme proposed by Maddah-Ali and Niesen (MAN) transmits coded multicast messages to users equipped with caches and it is known to be optimal within a constant factor. This work extends this caching scheme to two-hop relay…

Information Theory · Computer Science 2019-03-15 Mozhgan Bayat , Kai Wan , Giuseppe Caire

For unmanned aerial vehicle (UAV) aided millimeter wave (mmWave) networks, we propose a unified three-dimensional (3D) spatial framework in this paper to model a general case that uncovered users send messages to base stations via UAVs.…

Information Theory · Computer Science 2019-09-27 Wenqiang Yi , Yuanwei Liu , Eliane Bodanese , Arumugam Nallanathan , George K. Karagiannidis

In cellular-connected unmanned aerial vehicle (UAV) network, a minimization problem on the weighted sum of time cost and expected outage duration is considered. Taking advantage of UAV's adjustable mobility, an intelligent UAV navigation…

Signal Processing · Electrical Eng. & Systems 2021-09-20 Yuanjian Li , A. Hamid Aghvami , Daoyi Dong

Masked diffusion language models (MDLMs) enable parallel decoding by predicting all masked positions at each denoising step, yet existing training-free samplers usually decide which positions to commit at token-level granularity. We revisit…

Machine Learning · Computer Science 2026-05-29 Heqiang Qi , Wei Huang , Mingyuan Bai , Xiangming Meng

Image retrieval (IR) has emerged as a promising approach for self-localization in unmanned aerial vehicles (UAVs). However, IR-based methods face several challenges: 1) Pre- and post-processing incur significant computational and storage…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Ming Dai , Enhui Zheng , Jiahao Chen , Lei Qi , Zhenhua Feng , Wankou Yang

This correspondence paper investigates joint design of small base station (SBS) clustering, multicast beamforming for access and backhaul links, as well as frequency allocation in backhaul transmission to minimize the total power…

Signal Processing · Electrical Eng. & Systems 2019-09-04 Jun Xu , Pengcheng Zhu , Jiamin Li , Xiaohu You

Many rescue missions demand effective perception and real-time decision making, which highly rely on effective data collection and processing. In this study, we propose a three-layer architecture of emergency caching networks focusing on…

Networking and Internet Architecture · Computer Science 2024-02-28 Zeyu Tian , Lianming Xu , Liang Li , Li Wang , Aiguo Fei

Cross-view UAV geolocalization is fundamentally a challenging large-scale image retrieval task, aiming to determine the geographic coordinates of Unmanned Aerial Vehicle (UAV) queries by matching them against an extensive geo-tagged…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Bowen Liu , Pengyue Jia , Wanyu Wang , Derong Xu , Jiawei Cheng , Jiancheng Dong , Xiao Han , Zimo Zhao , Chao Zhang , Bowen Yu , Fangyu Hong , Xiangyu Zhao