307 citations · 522 across the 41 of their papers we have counts for
15 papers · 1 filter
Connectivity-Aware Task Offloading for Remote Northern Regions: a Hybrid LEO-MEO Architecture
Mohammed Almekhlafi, Antoine Lesage-Landry, Gunes Karabulut Kurt
Arctic regions, such as northern Canada, face significant challenges in achieving consistent connectivity and low-latency computing services due to the sparse coverage of Low Earth…
Modeling the Doppler Shift in Cislunar Environment with Gaussian Mixture Models
Baris Donmez, Sebastien Loranger, Gunes Karabulut Kurt
This study investigates the RF-based Doppler shift distribution characterization of the Lunar South Pole (LSP) based inter-satellite link (ISL) in varying inclination. Doppler shif…
Space Shift Keying-Enabled ISAC for Efficient Debris Detection and Communication in LEO Satellite Networks
Gedeon Ghislain Nkwewo Ngoufo, Khaled Humadi, Elham Baladi +1
The proliferation of space debris in low Earth orbit (LEO) presents critical challenges for orbital safety, particularly for satellite constellations. Integrated sensing and commun…
Improving SAGIN Resilience to Jamming with Reconfigurable Intelligent Surfaces
Leila Marandi, Khaled Humadi, Gunes Karabulut Kurt +2
This study investigates the anti-jamming space-air-ground integrated network (SAGIN) scenario wherein a reconfigurable intelligent surface (RIS) is deployed on a fixed Unmanned Aer…
Measurement-Based Modeling of Short Range Terahertz Channels and Their Capacity Analysis
Erhan Karakoca, Hasan Nayir, Güneş Karabulut Kurt +1
In this work, extensive propagation characteristics of short range 240 to 300 GHz terahertz (THz) channels are mapped based on a measurement campaign conducted utilizing a novel, t…
Multi-State Inter-Satellite Channel Models
Eray Güven, Olfa Ben Yahia, Güneş Karabulut Kurt
The advancement in satellite networks (SatNets) offers vast opportunities for large-scale connectivity and flexibility. The intersection of inter-satellite communication (ISC) and…
Physical Layer Authentication for LEO Satellite Constellations
Ozan Alp Topal, Gunes Karabulut Kurt
Physical layer authentication (PLA) is the process of claiming identity of a node based on its physical layer characteristics such as channel fading or hardware imperfections. In t…
Intermittent Jamming against Telemetry and Telecommand of Satellite Systems and A Learning-driven Detection Strategy
Selen Gecgel, Gunes Karabulut Kurt
Towards sixth-generation networks (6G), satellite communication systems, especially based on Low Earth Orbit (LEO) networks, become promising due to their unique and comprehensive…
Physical Layer Security Framework for Optical Non-Terrestrial Networks
Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt +2
In this work, we propose a new physical layer security framework for optical space networks. More precisely, we consider two practical eavesdropping scenarios: free-space optical (…
On the Use of HAPS to Increase Secrecy Performance in Satellite Networks
Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt
In this paper, we investigate the secrecy performance of radio frequency (RF) eavesdropping for a high altitude platform station (HAPS) aided satellite communication (SatCom) syste…
Securing the Inter-Spacecraft Links: Doppler Frequency Shift based Physical Layer Key Generation
Ozan Alp Topal, Gunes Karabulut Kurt, Halim Yanikomeroglu
We propose a novel physical layer secret key generation method for the inter-spacecraft communication links. By exploiting the Doppler frequency shifts of the reciprocal spacecraft…
Spectrum Sensing and Signal Identification with Deep Learning based on Spectral Correlation Function
Kürşat Tekbıyık, Özkan Akbunar, Ali Rıza Ekti +3
Spectrum sensing is one of the means of utilizing the scarce source of wireless spectrum efficiently. In this paper, a convolutional neural network (CNN) model employing spectral c…
Transmit Antenna Selection for Massive MIMO-GSM with Machine Learning
Selen Gecgel, Caner Goztepe, Gunes Karabulut Kurt
A dynamic and flexible generalized spatial modulation (GSM) framework is proposed for massive MIMO systems. Our framework is leveraged on the utilization of machine learning method…
A Tutorial on Nonorthogonal Multiple Access for 5G and Beyond
Mahmoud Aldababsa, Mesut Toka, Selahattin Gokceli +2
Today's wireless networks allocate radio resources to users based on the orthogonal multiple access (OMA) principle. However, as the number of users increases, OMA based approaches…
Identification of Smart Jammers: Learning based Approaches Using Wavelet Representation
Ozan Alp Topal, Selen Gecgel, Ender Mete Eksioglu +1
Smart jammer nodes can disrupt communication between a transmitter and a receiver in a wireless network, and they leave traces that are undetectable to classical jammer identificat…