no code implementations • 8 Feb 2024 • Wahab Khawaja, Martins Ezuma, Vasilii Semkin, Fatih Erden, Ozgur Ozdemir, Ismail Guvenc
Radar systems are further divided into conventional and modern radar systems, while communication systems can be used for joint communications and sensing (JC&S) in active mode and act as a source of illumination to passive radars for DCT-U.
no code implementations • 7 Dec 2023 • Mrugen Deshmukh, Zinan Lin, Hanqing Lou, Mahmoud Kamel, Rui Yang, Ismail Guvenc
Compressed beamforming algorithm is used in the current Wi-Fi standard to reduce the beamforming feedback overhead (BFO).
no code implementations • 7 Dec 2023 • Mrugen Deshmukh, Zinan Lin, Hanqing Lou, Mahmoud Kamel, Rui Yang, Ismail Guvenc
We explore several methods that consider different representations of the data in the candidate set.
no code implementations • 12 Jul 2023 • Sung Joon Maeng, Ozgur Ozdemir, Ismail Guvenc, Mihail L. Sichitiu
In particular, we introduce a 3D Kriging interpolation technique that uses realistic 3D correlation models of the signal power extracted from extensive measurements carried out at the NSF AERPAW platform.
no code implementations • 25 Jun 2023 • Ashwini Pondeycherry Ganesh, Wahab Khawaja, Ozgur Ozdemir, Ismail Guvenc, Hiroyuki Nomoto, Yasuaki Ide
The emerging 5G and future 6G technologies are envisioned to provide higher bandwidths and coverage using millimeter wave (mmWave) and sub-Terahertz (THz) frequency bands.
no code implementations • 15 Jun 2023 • Alireza Shamsoshoara, Fatemeh Lotfi, Sajad Mousavi, Fatemeh Afghah, Ismail Guvenc
The performance of this method is compared to learning from a demonstration technique called behavioral cloning (BC) using a supervised learning approach.
no code implementations • 28 May 2023 • Hyeokjun Kwon, Sung Joon Maeng, Ismail Guvenc
In this paper, the efficacy of the proposed localization approaches is examined based on these two main localization requirements through computer simulations.
no code implementations • 5 Mar 2023 • Donggu Lee, Ismail Guvenc
In this paper, we use extensive ray tracing simulations to investigate channel rank, condition number, and signal coverage distribution for air-to-ground MIMO channels.
no code implementations • 6 Feb 2023 • Amir Hossein Fahim Raouf, Chethan Kumar Anjinappa, Ismail Guvenc
The optimization is solved through an exhaustive search, and the results show that a higher data rate can be achieved by solving the joint problem of DC bias and time duration compared to solely optimizing the DC bias.
no code implementations • 17 Jan 2023 • Hyeokjun Kwon, Ismail Guvenc
The use of unmanned aerial vehicles (UAVs) for signal source search and localization (SSSL) can have significant advantages when compared to terrestrial-based approaches, due to the ease of capturing RF signals at higher altitudes and the autonomous 3D navigation capabilities of UAVs.
no code implementations • 6 Jan 2023 • Amir Hossein Fahim Raouf, Sung Joon Maeng, Ismail Guvenc, Ozgur Ozdemir, Mihail Sichitiu
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 congestion and interference.
no code implementations • 29 Nov 2022 • Sung Joon Maeng, JaeHyun Park, Ismail Guvenc
Unmanned aerial vehicles (UAVs) are expected to be used extensively in the future for various applications, either as user equipment (UEs) connected to a cellular wireless network, or as an infrastructure extension of an existing wireless network to serve other UEs.
no code implementations • 18 Nov 2022 • Wahab Khawaja, Martins Ezuma, Vasilii Semkin, Fatih Erden, Ozgur Ozdemir, Ismail Guvenc
Finally, limitations of radar systems and comparison with other techniques that do not rely on radars for detection, tracking, and classification of aerial threats are provided.
no code implementations • 27 Jun 2022 • Md Moin Uddin Chowdhury, Priyanka Sinha, Kim Mahler, Ismail Guvenc
Afterward, we derive the Cramer-Rao lower bound (CRLB) for the speed estimate of a UAV, and also provide a simple biased estimator for the UAV's speed which depends on the GBS density and HOC measurement period.
no code implementations • 15 Mar 2022 • Chethan K. Anjinappa, Ashwini P. Ganesh, Ozgur Ozdemir, Kris Ridenour, Wahab Khawaja, Ismail Guvenc, Hiroyuki Nomoto, Yasuaki Ide
The measurement results suggest that the transparent reflector, apart from an obvious advantage of transparency, has a higher penetration loss than the common indoor materials (excluding metal) and performs similarly to metal in terms of reflection.
no code implementations • 9 Mar 2022 • Mrugen Deshmukh, Zinan Lin, Hanqing Lou, Mahmoud Kamel, Rui Yang, Ismail Guvenc
The IEEE 802. 11 standard based wireless local area networks (WLANs) or Wi-Fi networks are critical to provide internet access in today's world.
no code implementations • 21 Feb 2022 • Priyanka Sinha, Md Moin Uddin Chowdhury, Ismail Guvenc, David W. Matolak, Kamesh Namuduri
By serving as an analog to traffic signal lights, communication signaling for drone to drone communications holds the key to the success of advanced air mobility (AAM) in both urban and rural settings.
no code implementations • 17 Dec 2021 • Martins Ezuma, Chethan Kumar Anjinappa, Vasilii Semkin, Ismail Guvenc
The study concludes that while the SL algorithms achieved good classification accuracy, the computational time was relatively long when compared to the ML and DL algorithms.
no code implementations • 14 Nov 2021 • Wahab Khawaja, Ender Ozturk, Ismail Guvenc
The stealth technology and unmanned aerial vehicles (UAVs) are expected to dominate current and future aerial warfare.
no code implementations • 2 Sep 2021 • Kairui Du, Omkar Mujumdar, Ozgur Ozdemir, Ender Ozturk, Ismail Guvenc, Mihail L. Sichitiu, Huaiyu Dai, Arupjyoti Bhuyan
In this work, we investigated the propagation and scattering behavior of 60 GHz mmWave signals in outdoor environments at a travel distance of 98 m for an aerial link (rooftop to rooftop), and 147 m for a ground link (light-pole to light-pole).
no code implementations • 17 Aug 2021 • Udita Bhattacherjee, Ender Ozturk, Ozgur Ozdemir, Ismail Guvenc, Mihail L. Sichitiu, Huaiyu Dai
First, the Keysight sensor detects the UAV by comparing the received RF signature with various other UAVs' RF signatures in the Keysight database using an envelope detection algorithm.
no code implementations • 17 Aug 2021 • Chethan K. Anjinappa, Ismail Guvenc
The utilization of millimeter-wave (mmWave) bands in 5G networks poses new challenges to network planning.
no code implementations • 11 Aug 2021 • Md Moin Uddin Chowdhury, Ismail Guvenc, Walid Saad, Arupjyoti Bhuyan
Since this is an NP-hard problem, we propose a genetic algorithm (GA) based heuristic method to optimize the UT angles of these antennas.
no code implementations • 4 Aug 2021 • Ender Ozturk, Chethan Kumar Anjinappa, Fatih Erden, Ismail Guvenc, Huaiyu Dai, Arupjyoti Bhuyan
Multiple-input multiple-output (MIMO) techniques can help in scaling the achievable air-to-ground (A2G) channel capacity while communicating with drones.
no code implementations • 14 Apr 2021 • Olusiji O Medaiyese, Martins Ezuma, Adrian P Lauf, Ismail Guvenc
The use of supervised learning with various sensing techniques such as audio, visual imaging, thermal sensing, RADAR, and radio frequency (RF) have been widely applied in the detection of unmanned aerial vehicles (UAV) in an environment.
no code implementations • 3 Mar 2021 • Kairui Du, Ozgur Ozdemir, Fatih Erden, Ismail Guvenc
In this work, we measured the penetration loss and the attenuation of several common constructional materials at mmWave (28 and 39 GHz) and sub-THz (120 and 144 GHz) bands.
no code implementations • 23 Feb 2021 • Olusiji Medaiyese, Martins Ezuma, Adrian P. Lauf, Ismail Guvenc
By using the wavelet scattering transform to extract signatures (scattergrams) from the steady state of the RF signals at 30 dB SNR, and using these scattergrams to train SqueezeNet, we achieved an accuracy of 98. 9% at 10 dB SNR.
no code implementations • 23 Feb 2021 • Martins Ezuma, Chethan Kumar Anjinappa, Mark Funderburk, Ismail Guvenc
This paper presents a radar cross-section (RCS)-based statistical recognition system for identifying/ classifying unmanned aerial vehicles (UAVs) at microwave frequencies.
no code implementations • 7 Jan 2021 • Kairui Du, Ozgur Ozdemir, Fatih Erden, Ismail Guvenc
What is more, in non-line-of-sight (NLOS) propagation, the attenuation of mmWave is larger compared to the lower frequencies, which can seriously degrade the performance.
no code implementations • 3 Nov 2020 • Chethan Kumar Anjinappa, Fatih Erden, Ismail Guvenc
Our simulation results show that considering the first-order reflections in planning the mmWave network helps reduce the number of PMRs required to cover the NLoS area and the gNB placement aided with PMRs requires fewer gNBs to cover the same area, which in turn reduces the deployment cost.
no code implementations • 4 Oct 2020 • 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.
no code implementations • 30 Sep 2020 • Fatih Erden, Ozgur Ozdemir, Ismail Guvenc, David W. Matolak
Millimeter-wave (mmWave) communication systems require narrow beams to increase communication range.
no code implementations • 11 Sep 2020 • Ender Ozturk, Fatih Erden, Ismail Guvenc
As the SNR decreases, this approach fails dramatically because the information in the transient is lost in the noise, and the envelope is distorted heavily.
no code implementations • 10 May 2020 • Ali Rahmati, Seyyedali Hosseinalipour, Ismail Guvenc, Huaiyu Dai, Arupjyoti Bhuyan
Deployment of unmanned aerial vehicles (UAVs) is recently getting significant attention due to a variety of practical use cases, such as surveillance, data gathering, and commodity delivery.
no code implementations • 27 Apr 2020 • Nozhan Hosseini, Mahfuza Khatun, Changyu Guo, Kairui Du, Ozgur Ozdemir, David W. Matolak, Ismail Guvenc, Hani Mehrpouyan
Typical building material attenuations in these high frequency ranges are of interest for link budget calculations.
no code implementations • 7 Dec 2019 • Abhaykumar Kumbhar, Hamidullah Binol, Simran Singh, Ismail Guvenc, Kemal Akkaya
Our simulation results show the heuristic algorithms outperform the brute-force technique and achieve better peak values of coverage probability and 5pSE.
no code implementations • 31 May 2019 • Md Moin Uddin Chowdhury, Fatih Erden, Ismail Guvenc
Received signal strength (RSS) at the UAV, which is a function of the UAV and source positions, is fed to a Q-learning algorithm and the UAV is navigated to the vicinity of the source.