A survey on channel sounding technologies and measurements for UAV-assisted communications

K Mao, Q Zhu, CX Wang, X Ye… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
Unmanned aerial vehicles (UAVs) have been widely used in both military and civilian
applications, where a stable communication link is vital for safe flight control and robust data …

Sub-terahertz and mmwave penetration loss measurements for indoor environments

K Du, O Ozdemir, F Erden… - 2021 IEEE International …, 2021 - ieeexplore.ieee.org
Millimeter-wave (mmWave) and terahertz (THz) spectrum can support significantly higher
data rates compared to lower frequency bands and hence are being actively considered for …

28 GHz mmWave channel measurements and modeling in a library environment

F Erden, O Ozdemir, I Guvenc - 2020 IEEE Radio and Wireless …, 2020 - ieeexplore.ieee.org
To fully exploit the millimeter-wave bands for the fifth generation cellular systems, an
accurate understanding of the channel propagation characteristics is required, and hence …

Holistic enlightening of blackspots with passive tailorable reflecting surfaces for efficient urban mmwave networks

S Häger, K Heimann, S Böcker, C Wietfeld - IEEE Access, 2023 - ieeexplore.ieee.org
Mitigating outage regions is of particular interest for emerging millimeter-wave (mmWave)
and future sub-terahertz frequency cellular networks. Whereas smart radio environments …

A sub-terahertz sliding correlator channel sounder with absolute timing using precision time protocol over Wi-Fi

D Shakya, H Poddar… - GLOBECOM 2023-2023 …, 2023 - ieeexplore.ieee.org
Radio channels at mmWave and sub-THz frequencies for 5G and 6G communications offer
large channel band-widths (hundreds of MHz to several GHz) to achieve multi-Gbps data …

28 GHz mmWave channel measurements: A comparison of horn and phased array antennas and coverage enhancement using passive and active repeaters

O Ozdemir, F Erden, I Guvenc, T Yekan… - arXiv preprint arXiv …, 2020 - arxiv.org
Propagation channel characteristics are substantially different in sub-6 GHz and millimeter-
wave (mmWave) bands. A typical mmWave link experiences more than an order-of …

Channel prediction for mmWave ground-to-air propagation under blockage

W Khawaja, O Ozdemir, I Guvenc - IEEE antennas and wireless …, 2021 - ieeexplore.ieee.org
Ground-to-air (GA) communication using unmanned aerial vehicles (UAVs) has gained
popularity in recent years and is expected to be part of 5G networks and beyond. However …

Sub-Terahertz Channel Characterization in a Lecture Room from Measurements with Phase Drift by a Rotating Horn Antenna

KW Kim, MD Kim, JJ Park, J Lee… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
As the frequency bands for mobile communication increase, the study of the spatial
characteristics of wireless channel for beamforming becomes increasingly important. To …

28 GHz indoor and outdoor propagation measurements and analysis at a regional airport

K Du, O Ozdemir, F Erden… - 2021 IEEE 32nd Annual …, 2021 - ieeexplore.ieee.org
In the upcoming 5G communication, the millimeter-wave (mmWave) technology will play an
important role due to its large bandwidth and high data rate. However, mmWave frequencies …

Timing offset and timing stability for a dual-clock channel sounder

JM Kast, JD Rezac, S Römisch… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
We describe a mathematical framework for evaluating timing offset and timing noise in
channel sounders based on a second-order deterministic model and a stochastic metric …