158 citations · 438 across the 70 of their papers we have counts for
14 papers · 1 filter
Off-Grid Aware Spatial Covariance Estimation in mmWave Communications
Chethan Kumar Anjinappa, Ali Cafer Gurbuz, Yavuz Yapici +1
This work investigates the problem of spatial covariance matrix estimation in a millimeter-wave (mmWave) hybrid multiple-input multiple-output (MIMO) system with an emphasis on the…
Compact-Range RCS Measurements and Modeling of Small Drones at 15 GHz and 25 GHz
Martins Ezuma, Mark Funderburk, Ismail Guvenc
The knowledge of the radar signature of aerial targets, such as drones, is critical in designing an effective radar detection system. It is a challenging task to measure the radar…
28 GHz mmWave Channel Measurements and Modeling in a Library Environment
Fatih Erden, Ozgur Ozdemir, Ismail Guvenc
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 ex…
Low-Resolution Limited-Feedback NOMA for mmWave Communications
Yavuz Yapici, Ismail Guvenc, Huaiyu Dai
The spectrum-efficient millimeter-wave (mmWave) communications has recently attracted much attention as a viable solution to spectrum crunch problem. In this work, we propose a nov…
Adaptive Kalman Tracking for Indoor Visible Light Positioning
Yusuf Eroglu, Fatih Erden, Ismail Guvenc
Visible light communication (VLC) utilizes light-emitting diodes (LEDs) to transmit wireless data. A VLC network can also be used to localize mobile users in indoor environments, w…
Vehicular LTE Connectivity Analysis in Urban and Rural Environments using USRP Measurements
Karthik Vasudeva, Ozgur Ozdemir, Sugan R. S. Chandar +2
The intelligent transportation system (ITS) offers a wide range of applications related to traffic management, which often require high data rate and low latency. The ubiquitous co…
Channel Estimation in mmWave Hybrid MIMO System via Off-Grid Dirichlet Kernels
Chethan Kumar Anjinappa, You Zhou, Yavuz Yapici +2
In this paper, we tackle channel estimation in millimeter-wave hybrid multiple-input multiple-output systems by considering off-grid effects. In particular, we assume that spatial…
Off-Grid Aware Channel and Covariance Estimation in mmWave Networks
Chethan Kumar Anjinappa, Ali Cafer Gurbuz, Yavuz Yapici +1
The spectrum scarcity at sub-6 GHz spectrum has made millimeter-wave (mmWave) frequency band a key component of the next-generation wireless networks. While mmWave spectrum offers…
RSS-Based Q-Learning for Indoor UAV Navigation
Md Moin Uddin Chowdhury, Fatih Erden, Ismail Guvenc
In this paper, we focus on the potential use of unmanned aerial vehicles (UAVs) for search and rescue (SAR) missions in GPS-denied indoor environments. We consider the problem of n…
Impact of 3D Antenna Radiation Patterns on TDOA-Based Wireless Localization of UAVs
Priyanka Sinha, Yavuz Yapici, Ismail Guvenc
Next big commercial applications of drones require to fly the drone beyond the visual line of sight (BVLOS). This inevitable ability to fly BVLOS will also necessitate the ability…
Interference Avoidance in UAV-Assisted Networks: Joint 3D Trajectory Design and Power Allocation
Ali Rahmati, Seyyedali Hosseinalipour, Yavuz Yapici +4
The use of the unmanned aerial vehicle (UAV) has been foreseen as a promising technology for the next generation communication networks. Since there are no regulations for UAVs dep…
NOMA for VLC Downlink Transmission with Random Receiver Orientation
Yavuz Yapici, Ismail Guvenc
Visible light communications (VLC) is an emerging technology with a promise of viable solution to spectrum crunch problem in conventional radio frequency (RF) bands. In this work,…
Trajectory Optimization in UAV-Assisted Cellular Networks under Mission Duration Constraint
Md Moin Uddin Chowdhury, Eyuphan Bulut, Ismail Guvenc
In this paper, we address the problem of finding the optimal trajectory for an unmanned aerial vehicle (UAV) for improving the wireless coverage of a terrestrial cellular network.…
SLNR Based Precoding for One-Bit Quantized Massive MIMO in mmWave Communications
Yavuz Yapıcı, Sung Joon Maeng, İsmail Güvenç +2
Massive multiple-input multiple-output (MIMO) is a key technology for 5G wireless communications with a promise of significant capacity increase. The use of low-resolution data con…