13 papers · 1 filter
Adaptive Distributed Physical-Layer Authentication and Attack Detection in 6G Non-Terrestrial Networks via Causal Meta-Learning
Parsa Rajabi, Mohammad Reza Abedi, Nader Mokari +2
Physical-layer authentication (PLA) in non-terrestrial networks (NTNs) is challenged by severe Doppler shifts, long delays, and fast channel variations, which cause distribution sh…
A GNN-Enhanced Reinforcement Learning Framework for Emergency Communications in ORAN-based Non-Terrestrial Networks
Md. Thouhidur Rahman, Mustapha Benjillali, Halim Yanikomeroglu +1
During disaster scenarios and periods of extreme data demand in next-generation wireless communications, conventional terrestrial networks (TNs) often become unreliable or fail ent…
CII: Novel CSI-RS Metric for Joint Precoder and RIS Reporting in Multi-User NextG Networks
Ali Fuat Sahin, Sefa Kayraklik, Ali Gorcin +3
While reconfigurable intelligent surfaces (RISs) are among the key enablers for next-generation (NextG) wireless networks, efficient feedback reporting for joint base station (BS)…
HAPS-Complemented Terrestrial Networks
Animesh Yadav, Halim Yanikomeroglu
We consider a downlink multicell multiple-input multiple-output (MIMO) system in an urban region, with a focus on improving the capacity of cell-edge user equipments (UEs). These U…
A Holistic Link Budget Analysis for mmWave and THz Communications in Non-Terrestrial Networks
Evla Safahan Ahrazoglu, Eylem Erdogan, Ibrahim Altunbas +1
The non-terrestrial network (NTN) architecture has gained significant interest from the academia owing to its versatility and the ability to provide worldwide service. To achieve e…
Pushing the Limits: Unlocking the Potential of Faster-than-Nyquist Signaling
Zichao Zhang, Melda Yuksel, Shuangyang Li +2
Faster-than-Nyquist (FTN) signaling is gaining attention as a smart way to pack more data into limited spectrum by intentionally breaking the traditional symbol-spacing rules. This…