no code implementations • 3 Dec 2021 • Ju-Hyung Lee, Hyowoon Seo, Jihong Park, Mehdi Bennis, Young-Chai Ko
A mega-constellation of low-altitude earth orbit (LEO) satellites (SATs) are envisaged to provide a global coverage SAT network in beyond fifth-generation (5G) cellular systems.
no code implementations • 10 Aug 2021 • Byungju Lim, Won Joon Yun, Joongheon Kim, Young-Chai Ko
After that, a deep learning based pilot design is proposed to minimize the mean square error (MSE) of LMMSE channel estimation, which is utilized to the joint pilot design and channel estimator for transfer learning approach.
no code implementations • 22 May 2021 • Won Joon Yun, Byungju Lim, Soyi Jung, Young-Chai Ko, Jihong Park, Joongheon Kim, Mehdi Bennis
In this article, we study the problem of air-to-ground ultra-reliable and low-latency communication (URLLC) for a moving ground user.
no code implementations • 20 Nov 2020 • Ha-Lim Song, Young-Chai Ko
With explosively increasing demands for unmanned aerial vehicle (UAV) applications, reliable link acquisition for serving UAVs is required.
no code implementations • 20 Oct 2020 • Ju-Hyung Lee, Jihong Park, Mehdi Bennis, Young-Chai Ko
Lastly, thanks to utilizing hybrid FSO/RF links, the proposed scheme achieves up to 62. 56x higher peak throughput and 21. 09x higher worst-case throughput than the cases utilizing either RF or FSO links, highlighting the importance of co-designing SAT-UAV associations, UAV trajectories, and hybrid FSO/RF links in beyond-5G NTNs.
no code implementations • 2 Jul 2020 • Ha-Lim Song, Young-Chai Ko
UAV communications based on an antenna array entail a beam tracking technology for reliable link acquisition.
no code implementations • 26 May 2020 • Ju-Hyung Lee, Jihong Park, Mehdi Bennis, Young-Chai Ko
A mega-constellation of low-earth orbit (LEO) satellites has the potential to enable long-range communication with low latency.