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In the realm of wireless communications in 5G, 6G and beyond, deploying unmanned aerial vehicle (UAV) has been an innovative approach to extend the coverage area due to its easy deployment. Moreover, reconfigurable intelligent surface (RIS)…

Networking and Internet Architecture · Computer Science 2022-12-09 Pyae Sone Aung , Yu Min Park , Yan Kyaw Tun , Zhu Han , Choong Seon Hong

Existing works mainly rely on the far-field planar-wave-based channel model to assess the performance of reconfigurable intelligent surface (RIS)-enabled wireless communication systems. However, when the transmitter and receiver are in…

Signal Processing · Electrical Eng. & Systems 2024-03-20 Hao Jiang , Wangqi Shi , Zaichen Zhang , Cunhua Pan , Qingqing Wu , Feng Shu , Ruiqi Liu , Jiangzhou Wang

This comprehensive survey examines how Reconfigurable Intelligent Surfaces (RIS) revolutionize resource allocation in various network frameworks. It begins by establishing a theoretical foundation with an overview of RIS technologies,…

Emerging Technologies · Computer Science 2025-01-07 Manzoor Ahmed , Fang Xu , Yuanlin Lyu , Aized Amin Soofi , Yongxiao Li , Feroz Khan , Wali Ullah Khan , Muhammad Sheraz , Teong Chee Chuah , Min Deng

To meet the growing mobility needs in intra-city transportation, the concept of urban air mobility (UAM) has been proposed in which vertical takeoff and landing (VTOL) aircraft are used to provide a ride-hailing service. In UAM, aircraft…

Signal Processing · Electrical Eng. & Systems 2022-01-04 Tengchan Zeng , Omid Semiari , Walid Saad , Mehdi Bennis

This letter investigates the performance of emerging wireless communication systems assisted by a fluid reconfigurable intelligent surface (FRIS). Unlike conventional reconfigurable intelligent surfaces (RISs), an FRIS consists of…

The rapid advancement of machine learning (ML) and on-device computing has revolutionized various industries, including transportation, through the development of Connected and Autonomous Vehicles (CAVs) and Intelligent Transportation…

Machine Learning · Computer Science 2025-02-11 Robert Akinie , Nana Kankam Brym Gyimah , Mansi Bhavsar , John Kelly

Reconfigurable Intelligent Surfaces (RIS) are a new paradigm which, with judicious deployment and alignment, can enable more favorable propagation environments and better wireless network design. As such, they can offer a number of…

Information Theory · Computer Science 2022-12-05 Jiayu Mao , Aylin Yener

The adoption of a Reconfigurable Intelligent Surface (RIS) for downlink multi-user communication from a multi-antenna base station is investigated in this paper. We develop energy-efficient designs for both the transmit power allocation and…

Information Theory · Computer Science 2022-06-23 Chongwen Huang , Alessio Zappone , George C. Alexandropoulos , Mérouane Debbah , Chau Yuen

In this paper, we propose a novel wireless architecture, mounted on a high-altitude aerial platform, which is enabled by reconfigurable intelligent surface (RIS). By installing RIS on the aerial platform, rich line-of-sight and full-area…

Signal Processing · Electrical Eng. & Systems 2022-02-03 Hong-Bae Jeon , Sung-Ho Park , Jaedon Park , Kaibin Huang , Chan-Byoung Chae

This work explores the deployment of active reconfigurable intelligent surfaces (A-RIS) in integrated terrestrial and non-terrestrial networks (TN-NTN) while utilizing coordinated multipoint non-orthogonal multiple access (CoMP-NOMA). Our…

Signal Processing · Electrical Eng. & Systems 2025-01-14 Muhammad Ahmed Mohsin , Hassan Rizwan , Muhammad Jazib , Muhammad Iqbal , Muhammad Bilal , Tabinda Ashraf , Muhammad Farhan Khan , Jen-Yi Pan

Communication with unmanned aerial vehicles (UAVs) in current terrestrial networks suffers from poor signal strength due to the down-tilt of the access points (APs) that are optimized to serve ground users ends (GUEs). To solve this, one…

Signal Processing · Electrical Eng. & Systems 2022-09-23 Bayan Al-Nahhas , Anas Chaaban , Md. Jahangir Hossain

Unmanned aerial vehicle (UAV) swarms must exploit machine learning (ML) in order to execute various tasks ranging from coordinated trajectory planning to cooperative target recognition. However, due to the lack of continuous connections…

Machine Learning · Computer Science 2020-06-11 Tengchan Zeng , Omid Semiari , Mohammad Mozaffari , Mingzhe Chen , Walid Saad , Mehdi Bennis

This paper investigates the problem of resource allocation for a wireless communication network with distributed reconfigurable intelligent surfaces (RISs). In this network, multiple RISs are spatially distributed to serve wireless users…

Signal Processing · Electrical Eng. & Systems 2020-05-04 Zhaohui Yang , Mingzhe Chen , Walid Saad , Wei Xu , Mohammad Shikh-Bahaei , H. Vincent Poor , Shuguang Cui

Unmanned aerial vehicle (UAV) swarms are considered as a promising technique for next-generation communication networks due to their flexibility, mobility, low cost, and the ability to collaboratively and autonomously provide services.…

Machine Learning · Computer Science 2023-01-04 Yahao Ding , Zhaohui Yang , Quoc-Viet Pham , Zhaoyang Zhang , Mohammad Shikh-Bahaei

The development of applications based on artificial intelligence and implemented over wireless networks is increasingly rapidly and is expected to grow dramatically in the future. The resulting demand for the aggregation of large amounts of…

Signal Processing · Electrical Eng. & Systems 2023-07-04 Bingnan Xiao , Xichen Yu , Wei Ni , Xin Wang , H. Vincent Poor

This paper investigates the integration of a fluid reconfigurable intelligent surface (FRIS) into ambient backscatter communication (AmBC) systems. Unlike conventional reconfigurable intelligent surfaces (RISs) with fixed position elements,…

Signal Processing · Electrical Eng. & Systems 2025-10-30 Masoud Kaveh , Farshad Rostami Ghadi , Riku Jantti , Kai-Kit Wong , F. Javier Lopez-Martinez

Reconfigurable Intelligent Surface (RIS) has becoming a useful tool in future wireless communication systems for close-distance communication network. This paper we use Reconfigurable Intelligent Surface (RIS) for downlink multi-user…

Information Theory · Computer Science 2021-02-02 RuiTianYi Lu

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

In this letter, we study the reconfigurable intelligent surfaces (RIS) aided full-duplex (FD) communication system. By jointly designing the active beamforming of two multi-antenna sources and passive beamforming of RIS, we aim to maximize…

Signal Processing · Electrical Eng. & Systems 2022-05-25 Yiru Wang , Pengxin Guan , Hongkang Yu , Yuping Zhao

Reconfigurable intelligent surface (RIS) is an excellent use case for line-of-sight (LOS) based technologies such as free-space optical (FSO) communications. In this paper, we analyze the performance of RIS-empowered FSO (RISE-FSO) systems…

Information Theory · Computer Science 2021-12-28 Vinay Kumar Chapala , S. M. Zafaruddin