53 citations · 103 across the 16 of their papers we have counts for
17 papers
Spectrum Monitoring and Analysis in Urban and Rural Environments at Different Altitudes
Amir Hossein Fahim Raouf, Sung Joon Maeng, Ismail Guvenc +2
Due to the scarcity of spectrum resources, the emergence of new technologies and ever-increasing number of wireless devices operating in the radio frequency spectrum lead to data c…
A Survey on Detection, Tracking, and Classification of Aerial Threats using Radars and Communications Systems
Wahab Khawaja, Martins Ezuma, Vasilii Semkin +3
The use of unmanned aerial vehicles (UAVs) for different applications has increased many folds in recent years. The UAVs are expected to change the future air operations. However,…
Indoor Propagation Measurements with Sekisui Transparent Reflectors at 28/39/120/144 GHz
Chethan K. Anjinappa, Ashwini P. Ganesh, Ozgur Ozdemir +5
One of the critical challenges of operating with the terahertz or millimeter-wave wireless networks is the necessity of at least a strong non-line-of-sight (NLoS) reflected path to…
28 GHz Indoor and Outdoor Propagation Analysis at a Regional Airport
Kairui Du, Ozgur Ozdemir, Fatih Erden +1
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 hav…
Channel Prediction for mmWave Ground-to-Air Propagation under Blockage
Wahab Khawaja, Ozgur Ozdemir, Ismail Guvenc
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, the GA l…
EMR: A New Metric to Assess the Resilience of Directional mmWave Channels to Blockages
Fatih Erden, Ozgur Ozdemir, Ismail Guvenc +1
Millimeter-wave (mmWave) communication systems require narrow beams to increase communication range. If the dominant communication direction is blocked by an obstacle, an alternati…
Attenuation of Several Common Building Materials in Millimeter-Wave Frequency Bands: 28, 73 and 91 GHz
Nozhan Hosseini, Mahfuza Khatun, Changyu Guo +5
Future cellular systems will make use of millimeter wave (mmWave) frequency bands. Many users in these bands are located indoors, i.e., inside buildings, homes, and offices. Typica…
28 GHz mmWave Channel Measurements: A Comparison of Horn and Phased Array Antennas and Coverage Enhancement Using Passive and Active Repeaters
Ozgur Ozdemir, Fatih Erden, Ismail Guvenc +2
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-magnitude l…
Multiple Ray Received Power Modeling for mmWave Indoor and Outdoor Scenarios
Wahab Khawaja, Ozgur Ozdemir, Fatih Erden +2
Millimeter-wave (mmWave) frequency bands are expected to be used for future 5G networks due to the availability of large unused spectrum. However, the attenuation at mmWave frequen…
Detection and Classification of UAVs Using RF Fingerprints in the Presence of Interference
Martins Ezuma, Fatih Erden, Chethan Kumar Anjinappa +2
This paper investigates the problem of detection and classification of unmanned aerial vehicles (UAVs) in the presence of wireless interference signals using a passive radio freque…
Correction of Channel Sounding Clock Drift and Antenna Rotation Effects for mmWave Angular Profile Measurements
Fatih Erden, Ozgur Ozdemir, Wahab Khawaja +1
Millimeter-wave (mmWave) bands will be used for the fifth generation communication systems to support high data rates. For the proper characterization of the mmWave propagation cha…
Ultra-Wideband Air-to-Ground Propagation Channel Characterization in an Open Area
Wahab Ali Gulzar Khawaja, Ozgur Ozdemir, Fatih Erden +2
This paper studies the air-to-ground (AG) ultra-wideband (UWB) propagation channel through measurements between 3.1 GHz to 4.8 GHz using unmanned-aerial-vehicles (UAVs). Different…
Coverage Enhancement for NLOS mmWave Links Using Passive Reflectors
Wahab Khawaja, Ozgur Ozdemir, Yavuz Yapici +3
The future 5G networks are expected to use millimeter wave (mmWave) frequency bands to take advantage of large unused spectrum. However, due to the high path loss at mmWave frequen…
Micro-UAV Detection and Classification from RF Fingerprints Using Machine Learning Techniques
Martins Ezuma, Fatih Erden, Chethan Kumar Anjinappa +2
This paper focuses on the detection and classification of micro-unmanned aerial vehicles (UAVs) using radio frequency (RF) fingerprints of the signals transmitted from the controll…
UWB Air-to-Ground Propagation Channel Measurements and Modeling using UAVs
Wahab Khawaja, Ozgur Ozdemir, Fatih Erden +2
This paper presents an experimental study of the air-to-ground (AG) propagation channel through ultrawideband(UWB) measurements in an open area using unmanned-aerial-vehicles (UAVs…
Indoor Coverage Enhancement for mmWave Systems with Passive Reflectors: Measurements and Ray Tracing Simulations
Wahab Khawaja, Ozgur Ozdemir, Yavuz Yapici +3
The future 5G networks are expected to use millimeter wave (mmWave) frequency bands, mainly due to the availability of large unused spectrum. However, due to high path loss at mmWa…
Temporal and Spatial Characteristics of mmWave Propagation Channels for UAVs
Wahab Khawaja, Ozgur Ozdemir, Ismail Guvenc
Unmanned aerial vehicles~(UAVs) are envisioned to be an integral part of future 5G communication systems. The agile nature of UAVs for serving users at different locations can help…