158 citations · 438 across the 70 of their papers we have counts for
16 papers · 1 filter
Load-Based On/Off Scheduling for Energy-Efficient Delay-Tolerant 5G Networks
Haluk Celebi, Yavuz Yapici, Ismail Guvenc +1
Dense deployment of small cells is seen as one of the major approaches for addressing the traffic demands in next-generation 5G wireless networks. The energy efficiency, however, b…
Low-Complexity Adaptive Beam and Channel Tracking for Mobile mmWave Communications
Yavuz Yapici, Ismail Guvenc
In this paper, we study low-complexity algorithms for beam and channel tracking for millimeter-wave (mmWave) communications. In particular, the least mean squares (LMS) and bidirec…
Effect of Passive Reflectors for Enhancing Coverage of 28 GHz mmWave Systems in an Outdoor Setting
Wahab Ali Gulzar Khawaja, Ozgur Ozdemir, Fatih Erden +3
The availability of large unused spectrum at millimeter wave (mmWave) frequency bands has steered the future 5G research towards these bands. However, mmWave signals are attenuated…
Interference Coordination for Aerial and Terrestrial Nodes in Three-Tier LTE-Advanced HetNet
Abhaykumar Kumbhar, Hamidullah Binol, Ismail Guvenc +1
Integrating unmanned aerial vehicles (UAVs) as user equipment (UE) and base-stations (BSs) into an existing LTE-Advanced heterogeneous network (HetNet) can further enhance wireless…
Impact of 3D UWB Antenna Radiation Pattern on Air-to-Ground Drone Connectivity
Jianlin Chen, Devin Raye, Wahab Khawaja +2
Three dimensional (3D) radiation pattern of an antenna mounted at a drone can significantly influence the air-to-ground (A2G) link quality. Even when a drone transmitter is very cl…
Millimeter-Wave V2X Channels: PropagationStatistics, Beamforming, and Blockage
Chethan Kumar Anjinappa, Ismail Guvenc
5G millimeter wave (mmWave) technology is envisioned to be an integral part of next-generation vehicle-to-everything (V2X) networks and autonomous vehicles due to its broad bandwid…
Adaptive Detection of Structured Signals in Low-Rank Interference
Philip Schniter, Evan Byrne
In this paper, we consider the problem of detecting the presence (or absence) of an unknown but structured signal from the space-time outputs of an array under strong, non-white in…
UAV-Based in-band Integrated Access and Backhaul for 5G Communications
Abdurrahman Fouda, Ahmed S. Ibrahim, Ismail Guvenc +1
We introduce the concept of using unmanned aerial vehicles (UAVs) as drone base stations for in-band Integrated Access and Backhaul (IB-IAB) scenarios for 5G networks. We first pre…
Wireless Localization for mmWave Networks in Urban Environments
Macey Ruble, Dr. Ismail Guvenc
Millimeter wave (mmWave) technology is expected to be a major component of 5G wireless networks. Ultra-wide bandwidths of mmWave signals and the possibility of utilizing large numb…
Slow Beam Steering for Indoor Multi-User Visible Light Communications
Yusuf Said Eroglu, Chethan Kumar Anjinappa, Ismail Guvenc +1
Visible light communications (VLC) is an emerging technology that enables broadband data rates using the visible spectrum. VLC beam steering has been studied in the literature to t…
UWB Channel Sounding and Modeling for UAV Air-to-Ground Propagation Channels
Wahab Khawaja, Ismail Guvenc, David Matolak
Unmanned aerial vehicles (UAVs) are expected to be used extensively in the near future in applications such as aerial surveillance, transportation, and disaster assistance. The con…
Angular and Temporal Correlation of V2X Channels Across Sub-6 GHz and mmWave Bands
Chethan Kumar Anjinappa, Ismail Guvenc
5G millimeter wave (mmWave) technology is envisioned to be an integral part of next-generation vehicle-to-everything (V2X) networks and autonomous vehicles due to its broad bandwid…
Comparison of Limited Feedback Schemes for NOMA Transmission in mmWave Drone Networks
Nadisanka Rupasinghe, Yavuz Yapici, Ismail Guvenc +1
Introducing non-orthogonal multiple access (NOMA) transmission to an unmanned aerial vehicle (UAV) based communication network is a promising solution to enhance its spectral effic…
Coverage Enhancement for mmWave Communications using Passive Reflectors
Wahab Khawaja, Ozgur Ozdemir, Yavuz Yapici +2
Millimeter wave (mmWave) technology is expected to dominate the future 5G networks mainly due to large spectrum available at these frequencies. However, coverage deteriorates signi…
A Graph Theoretic Approach for Training Overhead Reduction in FDD Massive MIMO Systems
Nadisanka Rupasinghe, Yuichi Kakishima, Haralabos Papadopoulos +1
The overheads associated with feedback-based channel acquisition can greatly compromise the achievable rates of FDD based massive MIMO systems. Indeed, downlink (DL) training and u…
Non-Orthogonal Multiple Access for mmWave Drone Networks with Limited Feedback
Nadisanka Rupasinghe, Yavuz Yapici, Ismail Guvenc +1
Unmanned aerial vehicle (UAV) base stations (BSs) can be a promising solution to provide connectivity and quality of service (QoS) guarantees during temporary events and after disa…