no code implementations • 1 May 2024 • Eray Guven, Pablo Camacho, Elham Baladi, Gunes Karabulut Kurt
Interplanetary links (IPL) serve as crucial enablers for space exploration, facilitating secure and adaptable space missions.
no code implementations • 21 Mar 2024 • Eray Guven, Gunes Karabulut Kurt
A precise incident wave angle estimation in aerial communication is a key enabler in sixth-generation wireless communication network.
no code implementations • 26 Feb 2024 • Baris Donmez, Gunes Karabulut Kurt
It is found that an equidistant triple satellite scheme on EMLP-2 halo orbit with a semi-major axis length of 15, 000 km provides full SCP for LFS and it is essential for the continuous LFS wireless power transmission.
no code implementations • 3 Jan 2024 • Eray Guven, Gunes Karabulut Kurt
The use of sub-Terahertz (sub-THz) band is gaining considerable attention in 6G networks.
no code implementations • 8 Dec 2023 • Jintao Liang, Aizaz U. Chaudhry, Eylem Erdogan, Halim Yanikomeroglu, Gunes Karabulut Kurt, Peng Hu, Khaled Ahmed, Stephane Martel
For the Toronto--Sydney inter-continental connection in an FSOSN with Starlink's Phase 1 Version 3 constellation, when the LISL range is approximately 2, 900 km, the mean network latency and mean average satellite transmission power intersect are approximately 135 ms and 380 mW, respectively.
no code implementations • 20 Nov 2023 • Olivier Daoust, Hasan Nayir, Irfan Azam, Antoine Lesage-Landry, Gunes Karabulut Kurt
The analysis reveals that the reflected signals of the THz can be utilized for the detection of space debris.
no code implementations • 3 Nov 2023 • Eray Guven, Gunes Karabulut Kurt
This study investigates an experimental software defined radio (SDR) implementation on 180 GHz.
no code implementations • 15 Oct 2023 • Selen Gecgel Cetin, Gunes Karabulut Kurt, Angeles Vazquez-Castro
In this study, we aim to address these challenges for cislunar communications by proposing a machine learning-based cislunar space domain awareness (SDA) capability that enables robust and secure communications.
no code implementations • 6 Oct 2023 • Olfa Ben Yahia, Zineb Garroussi, Olivier Bélanger, Brunilde Sansò, Jean-François Frigon, Stéphane Martel, Antoine Lesage-Landry, Gunes Karabulut Kurt
High throughput satellites (HTS), with their digital payload technology, are expected to play a key role as enablers of the upcoming 6G networks.
no code implementations • 4 Oct 2023 • Hadil Otay, Khaled Humadi, Gunes Karabulut Kurt
In this scenario, the transmitting satellite sends data to the ground station using two different paths, i. e., direct and indirect transmission paths, with a relay satellite acting as an intermediary in the case of indirect transmission.
no code implementations • 20 Sep 2023 • Rüdiger Machhamer, Lejla Begic Fazlic, Eray Guven, David Junk, Gunes Karabulut Kurt, Stefan Naumann, Stephan Didas, Klaus-Uwe Gollmer, Ralph Bergmann, Ingo J. Timm, Guido Dartmann
The results show an improvement for both the simulation and the experiments with real data.
no code implementations • 8 Jun 2023 • Baris Donmez, Irfan Azam, Gunes Karabulut Kurt
Our simulation results show that in the non-ATP case, the minimum required average harvested power cannot be achieved beyond 680 and 1360 km distances for 1U and 12U satellites, respectively, with a maximum transmit power of 1 kW.
no code implementations • 3 Apr 2023 • Eray Guven, Caner Goztepe, Mehmet Akif Durmaz, Semiha Tedik Basaran, Gunes Karabulut Kurt, Oguz Kucur
Connected autonomous vehicles (CAV) constitute an important application of future-oriented traffic management . A vehicular system dominated by fully autonomous vehicles requires a robust and efficient vehicle-to-everything (V2X) infrastructure that will provide sturdy connection of vehicles in both short and long distances for a large number of devices, requiring high spectral efficiency (SE).
no code implementations • 18 Nov 2022 • Selen Gecgel Cetin, Berna Ozbek, Gunes Karabulut Kurt
Space has been reforming and this evolution brings new threats that, together with technological developments and malicious intent, can pose a major challenge.
no code implementations • 17 Feb 2022 • 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.
no code implementations • 1 Jan 2022 • Michel Kulhandjian, Gunes Karabulut Kurt, Hovannes Kulhandjian, Halim Yanikomeroglu, Claude D'Amours
This, in return, suggests that our proposed scheme is eminently suitable for multimodal sensor networks.
no code implementations • 28 Dec 2021 • Eylem Erdogan, Ibrahim Altunbas, Gunes Karabulut Kurt, Halim Yanikomeroglu
Issues with tracking, precision pointing, and Doppler shift are the major sources of performance loss in laser inter-satellite communication that can severely decrease the coverage and overall performance of satellite constellations.
no code implementations • 9 Dec 2021 • Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt, Ibrahim Altunbas, Halim Yanikomeroglu
In recent years, satellite communication (SatCom) systems have been widely used for navigation, broadcasting application, disaster recovery, weather sensing, and even spying on the Earth.
no code implementations • 21 Sep 2021 • Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt
In the former model, we propose a high altitude platform station (HAPS)-aided mixed RF/FSO/RF communication scheme where a terrestrial ground station intends to communicate with a cluster of nodes through two stratospheric HAPS systems.
no code implementations • 27 Jul 2021 • Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt, Ibrahim Altunbas, Halim Yanikomeroglu
In the first phase of transmission, the satellite selects the HAPS node that provides the highest signal-to-noise ratio (SNR).
no code implementations • 10 Jul 2021 • 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 capabilities.
no code implementations • 30 Jun 2021 • Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt, Ibrahim Altunbas, Halim Yanikomeroglu
In SatCom, radio-frequency (RF) or free-space optical (FSO) communications can be used depending on the communication environment.
no code implementations • 28 Jun 2021 • Qiqi Ren, Omid Abbasi, Gunes Karabulut Kurt, Halim Yanikomeroglu, Jian Chen
In addition, the caching technique is introduced for network edges to store some of the fundamental data from the HAPS so that large propagation delays can be reduced.
no code implementations • 15 Jun 2021 • 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) system.
no code implementations • 15 Jun 2021 • Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt, Ibrahim Altunbas, Halim Yanikomeroglu
In this work, we propose a new physical layer security framework for optical space networks.
no code implementations • 4 May 2021 • Ozan Alp Topal, Gunes Karabulut Kurt, Halim Yanikomeroglu
In this work, we propose a secret key generation procedure specifically designed for the inter-spacecraft communication links.
no code implementations • 14 Feb 2021 • Selen Gecgel, Caner Goztepe, Gunes Karabulut Kurt, Halim Yanikomeroglu
Conventional physical layer decision mechanisms may not meet these requirements, as they are often based on impractical and oversimplifying assumptions that result in a trade-off between complexity and efficiency.
no code implementations • 16 Dec 2020 • Yucel Aydin, Gunes Karabulut Kurt, Enver Ozdemir, Halim Yanikomeroglu
Mutual authentication, creating a communication channel between terrestrial BS and UxNB, and fast handover operations may cause security issues in the use of UxNB for capacity injection.
Cryptography and Security
no code implementations • 31 Aug 2020 • Ozan Alp Topal, Gunes Karabulut Kurt, Halim Yanikomeroglu
We propose a novel physical layer secret key generation method for the inter-spacecraft communication links.
no code implementations • 17 Jul 2020 • Md Sahabul Alam, Gunes Karabulut Kurt, Halim Yanikomeroglu, Peiying Zhu, Ngoc Dũng Đào
High altitude platform station (HAPS) systems have recently attracted renewed attention.
no code implementations • IEEE 2020 • Semiha Tedik Basaran, Student Member, Gunes Karabulut Kurt, and Periklis Chatzimisios, Senior Member, IEEE
The proposed MMSE estimator provides a signif- icant mean squared error improvement with reducing en- ergy consumption compared to the conventional estimator.
no code implementations • 9 Apr 2020 • Lina Bariah, Lina Mohjazi, Sami Muhaidat, Paschalis C. Sofotasios, Gunes Karabulut Kurt, Halim Yanikomeroglu, Octavia A. Dobre
To accommodate the stringent requirements of their prospective applications, which are data-driven and defined by extremely low-latency, ultra-reliable, fast and seamless wireless connectivity, research initiatives are currently focusing on a progressive roadmap towards the sixth generation (6G) networks.