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Joint Optimization of 3D Placement and Radio Resource Allocation for per-UAV Sum Rate Maximization


May 08, 2023
Asad Mahmood, Thang X. Vu, Symeon Chatzinotas, Björn Ottersten

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Multi-Objective Optimization for 3D Placement and Resource Allocation in OFDMA-based Multi-UAV Networks


Apr 25, 2023
Asad Mahmood, Thang X. Vu, Shree Krishna Sharma, Symeon Chatzinotas, Björn Ottersten

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Quasi-Synchronous Random Access for Massive MIMO-Based LEO Satellite Constellations


Apr 10, 2023
Keke Ying, Zhen Gao, Sheng Chen, Mingyu Zhou, Dezhi Zheng, Symeon Chatzinotas, Björn Ottersten, H. Vincent Poor

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* 38 pages, 16 figures. This paper has been accepted by IEEE JSAC SI on 3GPP Technologies: 5G-Advanced and Beyond. Copyright may be transferred without notice, after which this version may no longer be accessible 

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Energy-Efficient RIS-Enabled NOMA Communication for 6G LEO Satellite Networks


Mar 09, 2023
Wali Ullah Khan, Eva Lagunas, Asad Mahmood, Symeon Chatzinotas, Björn Ottersten

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* 4,6 

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Space-Terrestrial Cooperation Over Spatially Correlated Channels Relying on Imperfect Channel Estimates: Uplink Performance Analysis and Optimization


Dec 21, 2022
Trinh Van Chien, Eva Lagunas, Tiep M. Hoang, Symeon Chatzinotas, Björn Ottersten, Lajos Hanzo

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* 18 pages, 12 figures, and 2 tables. Accepted by the IEEE TCOM. arXiv admin note: text overlap with arXiv:2209.01329 

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Opportunities for Intelligent Reflecting Surfaces in 6G-Empowered V2X Communications


Oct 02, 2022
Wali Ullah Khan, Asad Mahmood, Arash Bozorgchenani, Muhammad Ali Jamshed, Ali Ranjha, Eva Lagunas, Haris Pervaiz, Symeon Chatzinotas, Björn Ottersten, Petar Popovski

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* 11,4 

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Hybrid Beamforming in mmWave Dual-Function Radar-Communication Systems: Models, Technologies, and Challenges


Sep 13, 2022
Ziyang Cheng, Linlong Wu, Bowen Wang, Bhavani Shankar, Bin Liao, Björn Ottersten

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* This manuscript has not been fully modified 

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Power Allocation for Space-Terrestrial Cooperation Systems with Statistical CSI


Sep 03, 2022
Trinh Van Chien, Eva Lagunas, Tiep M. Hoang, Symeon Chatzinotas, Björn Ottersten, Lajos Hanzo

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* 6 pages and 2 figures. Accepted by the GLOBECOM 2022 

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Rate Splitting Multiple Access for Next Generation Cognitive Radio Enabled LEO Satellite Networks


Aug 07, 2022
ali Ullah Khan, Zain Ali, Eva Lagunas, Asad Mahmood, Muhammad Asif, Asim Ihsan, Symeon Chatzinotas, Björn Ottersten, Octavia A. Dobre

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* 10,9. arXiv admin note: substantial text overlap with arXiv:2208.02924 

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