Results 231 to 240 of about 1,571,968 (246)

High-Mobility Satellite-UAV Communications: Challenges, Solutions, and Future Research Trends

IEEE Communications Magazine, 2022
Due to their fast deployment and high flexibility, unmanned aerial vehicles (UAVs) are regarded as vital enablers of various applications that include emergency rescue, telecommunications, delivery of supplies, and more.
Jiawei Wang, Chunxiao Jiang, Linling Kuang   +2 more
semanticscholar   +1 more source

Phased Array Metantennas for Satellite Communications

IEEE Communications Magazine, 2022
To optimize the reception and transmission in real-time changing links, phased array antennas have been increasingly investigated and applied in satellite applications.
Zhi Ning Chen, X. Qing, Xinyi Tang, Wei E. I. Liu, Ruolei Xu   +4 more
semanticscholar   +1 more source

OTFS Enabled LEO Satellite Communications: A Promising Solution to Severe Doppler Effects

IEEE Network
With the advantages of low cost and flexible deployment, low earth orbit satellite (LEO-Sat) communications have received widespread attentions, such as providing global wireless access with enhanced data rates in future 6G networks.
Jia Shi, Zan Li, Junfan Hu, Zhuangzhuang Tie, Shuangyang Li, Wei Liang, Zhiguo Ding   +6 more
semanticscholar   +1 more source

LEO/VLEO Satellite Communications in 6G and Beyond Networks–Technologies, Applications, and Challenges

IEEE Network
The fifth generation (5G) wireless communication systems have been deployed around the world, and the sixth generation (6G) networks have become the focus of research interest, whose technical roadmap has been put forward. Low earth orbit (LEO) satellite
Xuewen Luo, Hsiao-Hwa Chen, Qing Guo
semanticscholar   +1 more source

UAV-Assisted Physical Layer Security in Multi-Beam Satellite-Enabled Vehicle Communications

IEEE transactions on intelligent transportation systems (Print), 2021
In this paper, we investigate unmanned aerial vehicle (UAV) assisted physical layer security in multi-beam satellite enabled vehicle communications.
Zhisheng Yin, Min Jia, Nan Cheng, Wei Wang, Feng Lyu, Qing Guo, X. Shen   +6 more
semanticscholar   +1 more source

Dynamic Beam Coverage for Satellite Communications Aided by Movable-Antenna Array

IEEE Transactions on Wireless Communications
The low-earth orbit (LEO) satellite network has been recognized as a promising technology to enable the ubiquitous coverage and massive connectivity for future sixth-generation (6G) mobile communications.
Lipeng Zhu, Xian-song Pi, Wenyan Ma, Zhenyu Xiao, Rui Zhang   +4 more
semanticscholar   +1 more source

Modeling and Analysis of Downlink Communications in a Heterogeneous LEO Satellite Network

IEEE Transactions on Wireless Communications
Low Earth Orbit (LEO) satellite networks connect millions of devices on Earth and offer various services, such as data communications, remote sensing, and data harvesting. As the number of services increases, LEO satellite networks will continue to grow,
Chang-Sik Choi
semanticscholar   +1 more source

Large-Scale MIMO Enabled Satellite Communications: Concepts, Technologies, and Challenges

IEEE Communications Magazine
Satellite communications are perceived as an essential supplement to terrestrial networks due to their benefits of providing seamless coverage and global connectivity. On the basis of existing multiple-input multiple-output (MIMO) satellite communication,
Yezeng Wu, Lixia Xiao, Jiaxi Zhou, Mingjie Feng, Pei Xiao, Tao Jiang   +5 more
semanticscholar   +1 more source

Resource Efficiency Optimization for Robust Beamforming in Multi-Beam Satellite Communications

IEEE Transactions on Vehicular Technology, 2021
The tradeoff between energy efficiency (EE) and spectral efficiency (SE) provides a new perspective for the transmit design in satellite communications (SATCOM), i.e., one can jointly optimize the system EE and SE of the SATCOM system.
Wenjin Wang, Linna Gao, Rui Ding, Jizhao Lei, Li You, C. A. Chan, Xiqi Gao   +6 more
semanticscholar   +1 more source

Satellite Multi-Beam Collaborative Scheduling in Satellite Aviation Communications

IEEE Transactions on Wireless Communications
Satellite communications play an indispensable role in serving aviation user. However, since the number of satellite beams is much less than the number of users, aviation users need to share beams by time division multiplexing when the number of users is
Jiawei Wang, Chunxiao Jiang, Linling Kuang, Rui Han   +3 more
semanticscholar   +1 more source