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Beamforming techniques are considered as essential parts to compensate severe path losses in millimeter-wave (mmWave) communications. In particular, these techniques adopt large antenna arrays and formulate narrow beams to obtain…

Networking and Internet Architecture · Computer Science 2025-04-09 Muhammad Baqer Mollah , Honggang Wang , Mohammad Ataul Karim , Hua Fang

Millimeter wave (mmWave) has great potential in realizing high data rate thanks to the large spectral channels. It is considered as a key technology for the fifth generation wireless networks and is already used in wireless LAN (e.g., IEEE…

Information Theory · Computer Science 2015-11-11 Vutha Va , Junil Choi , Robert W. Heath

Millimeter wave (mmWave) is an attractive candidate for high-speed mobile communications in the future. However, due to the propagation characteristics of mmWave, beam and and and and alignment becomes a key challenge for serving users with…

Information Theory · Computer Science 2019-07-03 Yu Liu , Jiahui Li , Yin Sun , Shidong Zhou

Deep learning-based models, such as recurrent neural networks (RNNs), have been applied to various sequence learning tasks with great success. Following this, these models are increasingly replacing classic approaches in object tracking…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Stefan Becker , Ronny Hug , Wolfgang Hübner , Michael Arens , Brendan T. Morris

Learning the covariance matrices of spatially-correlated wireless channels, in millimeter-wave (mmWave) vehicular communication, can be utilized in designing environmen-taware beamforming codebooks. Such channel covariance matrices can be…

Signal Processing · Electrical Eng. & Systems 2021-07-05 Imtiaz Nasim , Ahmed S. Ibrahim

With the deployment of the fifth generation (5G) wireless systems gathering momentum across the world, possible technologies for 6G are under active research discussions. In particular, the role of machine learning (ML) in 6G is expected to…

Signal Processing · Electrical Eng. & Systems 2022-06-27 Ahmet M. Elbir , Wei Shi , Kumar Vijay Mishra , Anastasios K. Papazafeiropoulos , Symeon Chatzinotas

The coordination of vehicles is a crucial element of autonomous driving, as it enhances the efficiency, convenience, and safety of road traffic. In order to fully exploit the capabilities of such coordination, communication with high data…

Unmanned aerial vehicle (UAV)-enabled communications have been proposed as a critical part of the beyond fifth-generation (5G) cellular networks. This type of communications is frequently characterized by line-of-sight (LoS) and dynamic…

Information Theory · Computer Science 2020-04-29 Petros S. Bithas , Viktor Nikolaidis , Athanasios G. Kanatas , George K. Karagiannidis

A precise incident wave angle estimation in aerial communication is a key enabler in sixth-generation wireless communication network. With this goal, a generic 3-dimensional (3D) channel model is analyzed for air-to-air (A2A) networks under…

Signal Processing · Electrical Eng. & Systems 2024-03-29 Eray Guven , Gunes Karabulut Kurt

The performance of millimeter wave (mmWave) communications critically depends on the accuracy of beamforming both at base station (BS) and user terminals (UEs) due to high isotropic path-loss and channel attenuation. In high mobility…

Information Theory · Computer Science 2021-08-11 Saeid K. Dehkordi , Mari Kobayashi , Giuseppe Caire

Unmanned Aerial Vehicles (UAVs) are increasingly essential in various fields such as surveillance, reconnaissance, and telecommunications. This study aims to develop a learning algorithm for the path planning of UAV wireless communication…

Machine Learning · Computer Science 2025-01-20 Joseanne Viana , Boris Galkin , Lester Ho , Holger Claussen

Thanks to the availability of large bandwidth and high-gain directional antennas at the millimeter-wave (mmWave) bands, mmWave communications have been considered as one of the primary solutions to meet the high data rates needs in…

Networking and Internet Architecture · Computer Science 2021-12-23 Tianyi Zhang , Hongwei Zhang , Zhibo Meng

Benefiting from huge bandwidth resources, millimeter-wave (mmWave) communications provide one of the most promising technologies for next-generation wireless networks. To compensate for the high pathloss of mmWave signals, large-scale…

Information Theory · Computer Science 2021-12-14 Ke Ma , Zhaocheng Wang , Wenqiang Tian , Sheng Chen , Lajos Hanzo

This paper introduces the deployment of unmanned aerial vehicles (UAVs) as lightweight wireless access points that leverage the fixed infrastructure in the context of the emerging open radio access network (O-RAN). More precisely, we…

Systems and Control · Electrical Eng. & Systems 2022-11-22 Hossein Mohammadi , Vuk Marojevic , Bodong Shang

Millimeter wave channels exhibit structure that allows beam alignment with fewer channel measurements than exhaustive beam search. From a compressed sensing (CS) perspective, the received channel measurements are usually obtained by…

Signal Processing · Electrical Eng. & Systems 2019-11-13 Nitin Jonathan Myers , Yuyang Wang , Nuria González-Prelcic , Robert W. Heath

Sub-6GHz vehicular communications (using DSRC, ITS-G5 or C-V2X) have been developed to support active safety applications. Future connected and automated driving applications can require larger bandwidth and higher data rates than currently…

Networking and Internet Architecture · Computer Science 2019-05-16 Baldomero Coll-Perales , Javier Gozalvez , Marco Gruteser

In this paper, a full-duplex unmanned aerial vehicle (FD-UAV) relay is employed to increase the communication capacity of millimeter-wave (mmWave) networks. Large antenna arrays are equipped at the source node (SN), destination node (DN),…

Signal Processing · Electrical Eng. & Systems 2020-04-24 Lipeng Zhu , Jun Zhang , Zhenyu Xiao , Xianbin Cao , Xiang-Gen Xia , Robert Schober

Growing requirements of future wireless communication systems, such as high data rates, high reliability, and low latency, make the active usage of Non-Terrestrial Networks (NTN) an inevitable necessity. In this regard, High Altitude…

Signal Processing · Electrical Eng. & Systems 2024-08-28 Muhammet Kirik , Liza Afeef , Huseyin Arslan

With the emergence of autonomous driving and 5G mobile communication systems, how to design vehicular networks to meet the requirements of ultra-reliable low-latency communication (URLLC) between autonomous vehicles is widely concerned by…

Networking and Internet Architecture · Computer Science 2019-03-20 Zipeng Li , Yangwanli Guo , Xiaohu Ge

This paper addresses a novel multi-agent deep reinforcement learning (MADRL)-based positioning algorithm for multiple unmanned aerial vehicles (UAVs) collaboration (i.e., UAVs work as mobile base stations). The primary objective of the…

Machine Learning · Computer Science 2023-07-03 Chanyoung Park , Soohyun Park , Soyi Jung , Carlos Cordeiro , Joongheon Kim