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The development of urban-air-mobility (UAM) is rapidly progressing with spurs, and the demand for efficient transportation management systems is a rising need due to the multifaceted environmental uncertainties. Thus, this paper proposes a…

Multiagent Systems · Computer Science 2023-06-08 Chanyoung Park , Gyu Seon Kim , Soohyun Park , Soyi Jung , Joongheon Kim

Federated learning (FL), as a disruptive machine learning paradigm, enables the collaborative training of a global model over decentralized local datasets without sharing them. It spans a wide scope of applications from Internet-of-Things…

Signal Processing · Electrical Eng. & Systems 2022-04-01 Yuhan Yang , Yong Zhou , Youlong Wu , Yuanming Shi

Urban air mobility is the new mode of transportation aiming to provide a fast and secure way of travel by utilizing the low-altitude airspace. This goal cannot be achieved without the implementation of new flight regulations which can…

Robotics · Computer Science 2023-01-25 Asal Mehditabrizi , Mahdi Samadzad , Sina Sabzekar

As an emerging wireless communication technology, reconfigurable intelligent surface (RIS) has become a basic choice for providing signal coverage services in scenarios with dense obstacles or long tunnels through multi-hop configurations.…

Information Theory · Computer Science 2024-07-16 Rujing Xiong , Jialong Lu , Jianan Zhang , Minggang Liu , Xuehui Dong , Tiebin Mi , Robert Caiming Qiu

The trend for Urban Air Mobility (UAM) is growing with prospective air taxis, parcel deliverers, and medical and industrial services. Safe and efficient UAM operation relies on timely communication and reliable data exchange. In this paper,…

Networking and Internet Architecture · Computer Science 2024-05-24 Timo Häckel , Luca von Roenn , Nemo Juchmann , Alexander Fay , Rinie Akkermans , Tim Tiedemann , Thomas C. Schmidt

It has been considered that urban air mobility (UAM), also known as drone-taxi or electrical vertical takeoff and landing (eVTOL), will play a key role in future transportation. By putting UAM into practical future transportation, several…

Multiagent Systems · Computer Science 2023-01-26 Chanyoung Park , Soohyun Park , Gyu Seon Kim , Soyi Jung , Jae-Hyun Kim , Joongheon Kim

Urban air mobility (UAM) is a transformative system that operates various small aerial vehicles in urban environments to reshape urban transportation. However, integrating UAM into existing urban environments presents a variety of complex…

Multiagent Systems · Computer Science 2025-01-16 Surya Murthy , John-Paul Clarke , Ufuk Topcu , Zhenyu Gao

Unmanned aerial vehicles (UAVs) have been widely adopted in various real-world applications. However, the control and optimization of multi-UAV systems remain a significant challenge, particularly in dynamic and constrained environments.…

Machine Learning · Computer Science 2025-06-10 Zijiang Yan , Hao Zhou , Jianhua Pei , Hina Tabassum

Reconfigurable intelligent surfaces (RIS) can improve signal propagation environments by adjusting the phase of the incident signal. However, optimizing the phase shifts jointly with the beamforming vector at the access point is challenging…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Weijie Jin , Jing Zhang , Chao-Kai Wen , Shi Jin , Xiao Li , Shuangfeng Han

The requirements of vehicular communications grow with increasing level of automated driving and future applications of intelligent transportation systems (ITS). Beside the ever-increasing need for high capacity radio links, reliability and…

Networking and Internet Architecture · Computer Science 2021-08-31 Karsten Heimann , Benjamin Sliwa , Manuel Patchou , Christian Wietfeld

Wireless communication in the TeraHertz band (0.1--10 THz) is envisioned as one of the key enabling technologies for the future sixth generation (6G) wireless communication systems scaled up beyond massive multiple input multiple output…

Signal Processing · Electrical Eng. & Systems 2022-06-23 Chongwen Huang , Zhaohui Yang , George C. Alexandropoulos , Kai Xiong , Li Wei , Chau Yuen , Zhaoyang Zhang , Merouane Debbah

Reconfigurable intelligent surfaces (RISs) are software-controlled passive devices that can be used as relay (R) systems to reflect incoming signals from a source (S) to a destination (D) in a cooperative manner with optimum signal strength…

Signal Processing · Electrical Eng. & Systems 2022-12-20 Bulent Sagir , Erdogan Aydin , Haci Ilhan

The performance of multiple reconfigurable intelligent surfaces (RISs) receives limited attention in previous studies. This article fills this research gap by investigating the capabilities of multiple RISs in real-world networks. We…

Systems and Control · Electrical Eng. & Systems 2023-07-04 Rujing Xiong , Jianan Zhang , Xuehui Dong , Zhengyu Wang , Junshuo Liu , Wei Yang , Tiebin Mi , Wenbo Huang , Robert Caiming Qiu

Over the past few years, the use of swarms of Unmanned Aerial Vehicles (UAVs) in monitoring and remote area surveillance applications has become widespread thanks to the price reduction and the increased capabilities of drones. The drones…

This letter considers the reconfigurable intelligent surface (RIS)-aided unmanned aerial vehicle (UAV) communication systems in urban areas under the general Rician fading channel. A hybrid offline-online design is proposed to improve the…

Signal Processing · Electrical Eng. & Systems 2022-05-30 Kaiyuan Tian , Bin Duo , Xiaojun Yuan , Wu Luo

Over-the-air computation (AirComp) integrates analog communication with task-oriented computation, serving as a key enabling technique for communication-efficient federated learning (FL) over wireless networks. However, AirComp-enabled FL…

Information Theory · Computer Science 2024-09-26 Wei Shi , Jiacheng Yao , Jindan Xu , Wei Xu , Lexi Xu , Chunming Zhao

Significant development of ride-sharing services presents a plethora of opportunities to transform urban mobility by providing personalized and convenient transportation while ensuring efficiency of large-scale ride pooling. However, a core…

Multiagent Systems · Computer Science 2021-06-15 Marina Haliem , Ganapathy Mani , Vaneet Aggarwal , Bharat Bhargava

Reconfigurable intelligent surface (RIS) has recently gained popularity as a promising solution for improving the signal transmission quality of wireless communications with less hardware cost and energy consumption. This letter offers a…

Signal Processing · Electrical Eng. & Systems 2022-05-19 Wangyang Xu , Jiancheng An , Chongwen Huang , Lu Gan , Chau Yuen

Recently, the reconfigurable intelligent surface (RIS), benefited from the breakthrough on the fabrication of programmable meta-material, has been speculated as one of the key enabling technologies for the future six generation (6G)…

Information Theory · Computer Science 2022-06-23 Chongwen Huang , Ronghong Mo , Chau Yuen

This paper addresses the crucial need for reliable wireless communication in vehicular networks, particularly vital for the safety and efficacy of (semi-)autonomous driving amid increasing traffic. We explore the use of Reconfigurable…

Networking and Internet Architecture · Computer Science 2025-03-26 Salim Janji , Paweł Sroka , Adrian Kliks