18 citations · 22 across the 17 of their papers we have counts for
11 papers · 1 filter
Round Trip Time Estimation Utilizing Cyclic Shift of Uplink Reference Signal
Rajeev Gangula, Tommaso Melodia, Rakesh Mundlamuri +1
In the context of fifth-generation new radio (5G NR) technology, it is not possible to directly obtain an absolute uplink (UL) channel impulse response (CIR) at the base station (g…
5G NR Positioning with OpenAirInterface: Tools and Methodologies
Rakesh Mundlamuri, Rajeev Gangula, Florian Kaltenberger +1
The fifth-generation new radio (5G NR) technology is expected to provide precise and reliable positioning capabilities along with high data rates. The Third Generation Partnership…
Novel Round Trip Time Estimation in 5G NR
Rakesh Mundlamuri, Rajeev Gangula, Florian Kaltenberger +1
The fifth generation new radio (5G NR) technology is expected to fulfill reliable and accurate positioning requirements of industry use cases, such as autonomous robots, connected…
UAV Trajectory Optimization and Tracking for User Localization in Wireless Networks
Omid Esrafilian, Rajeev Gangula, David Gesbert
In this paper, we investigate the problem of UAV-aided user localization in wireless networks. Unlike the existing works, we do not assume perfect knowledge of the UAV location, he…
Integrated Access and Backhaul in 5G with Aerial Distributed Unit using OpenAirInterface
Rakesh Mundlamuri, Omid Esrafilian, Rajeev Gangula +5
In this work, we propose an UAV-aided Integrated Access and Backhaul (IAB) system design offering 5G connectivity to ground users. UAV is integrated with a distributed unit (DU) ac…
Sensing aided Channel Estimation in Wideband Millimeter-Wave MIMO Systems
Rakesh Mundlamuri, Rajeev Gangula, Christo Kurisummoottil Thomas +2
In this work, the uplink channel estimation problem is considered for a millimeter wave (mmWave) multi-input multi-output (MIMO) system. It is well known that pilot overhead and co…
UAV-aided RF Mapping for Sensing and Connectivity in Wireless Networks
David Gesbert, Omid Esrafilian, Junting Chen +2
The use of unmanned aerial vehicles (UAV) as flying radio access network (RAN) nodes offers a promising complement to traditional fixed terrestrial deployments. More recently yet s…
UAV-aided Wireless Node Localization Using Hybrid Radio Channel Models
Omid Esrafilian, Rajeev Gangula, David Gesbert
This paper considers the problem of ground user localization based on received signal strength (RSS) measurements obtained by an unmanned aerial vehicle (UAV). We treat UAV-user li…
3D-Map Assisted UAV Trajectory Design Under Cellular Connectivity Constraints
Omid Esrafilian, Rajeev Gangula, David Gesbert
The enabling of safe cellular controlled unmanned aerial vehicle (UAV) beyond visual line of sight is expected to open important future opportunities in the area of transportation,…
Learning to Communicate in UAV-aided Wireless Networks: Map-based Approaches
Omid Esrafilian, Rajeev Gangula, David Gesbert
We consider a scenario where an UAV-mounted flying base station is providing data communication services to a number of radio nodes spread over the ground. We focus on the problem…
Optimization of Energy Harvesting MISO Communication System with Feedback
Rajeev Gangula, David Gesbert, Deniz Gündüz
Optimization of a point-to-point (p2p) multipleinput single-output (MISO) communication system is considered when both the transmitter (TX) and the receiver (RX) have energy harves…