Publications (291)
Exploring the 6G Potentials: Immersive, Hyper Reliable, and Low-Latency Communication
Afsoon Alidadi Shamsabadi, Animesh Yadav, Yasser Gadallah +1
The transition towards the sixth-generation (6G) wireless telecommunications networks introduces significant challenges for researchers and industry stakeholders. The 6G technology…
AI-Enabled Data-driven Intelligence for Spectrum Demand Estimation
Colin Brown, Mohamad Alkadamani, Halim Yanikomeroglu
Accurately forecasting spectrum demand is a key component for efficient spectrum resource allocation and management. With the rapid growth in demand for wireless services, mobile n…
A Survey of Rate-optimal Power Domain NOMA with Enabling Technologies of Future Wireless Networks
Omar Maraqa, Aditya S. Rajasekaran, Saad Al-Ahmadi +2
The ambitious high data-rate applications in the envisioned future B5G networks require new solutions, including the advent of more advanced architectures than the ones already use…
Signal Space Cognitive Cooperation
Eylem Erdogan, Ali Afana, Hamza U. Sokun +3
In this work, a new transmission scheme, signal space cognitive cooperation, is introduced by applying the idea of signal space diversity in an underlay spectrum sharing decode-and…
RL-Based Cargo-UAV Trajectory Planning and Cell Association for Minimum Handoffs, Disconnectivity, and Energy Consumption
Nesrine Cherif, Wael Jaafar, Halim Yanikomeroglu +1
Unmanned aerial vehicle (UAV) is a promising technology for last-mile cargo delivery. However, the limited on-board battery capacity, cellular unreliability, and frequent handoffs…
Underlay Drone Cell for Temporary Events: Impact of Drone Height and Aerial Channel Environments
Xiaohui Zhou, Salman Durrani, Jing Guo +1
Providing seamless connection to a large number of devices is one of the biggest challenges for the Internet of Things (IoT) networks. Using a drone as an aerial base station (ABS)…
On the Performance of Selection Relaying
Abdulkareem Adinoyi, Yijia Fan, Halim Yanikomeroglu +1
Interest in selection relaying is growing. The recent developments in this area have largely focused on information theoretic analyses such as outage performance. Some of these ana…
Massive Machine Type Communication with Data Aggregation and Resource Scheduling
Jing Guo, Salman Durrani, Xiangyun Zhou +1
To enable massive machine type communication (mMTC), data aggregation is a promising approach to reduce the congestion caused by a massive number of machine type devices (MTDs). In…
Quantum Graph Neural Networks for Double-Sided Reconfigurable Intelligent Surface Optimization
Noha Hassan, Xavier Fernando, Halim Yanikomeroglu
As a key enabler for sixth-generation (6G) wireless communications, reconfigurable intelligent surfaces (RISs) provide the flexibility to control signal strength. Nevertheless, opt…
Enhancing Next-Generation Urban Connectivity: Is the Integrated HAPS-Terrestrial Network a Solution?
Afsoon Alidadi Shamsabadi, Animesh Yadav, Halim Yanikomeroglu
Located in the stratospheric layer of Earth's atmosphere, high altitude platform station (HAPS) is a promising network infrastructure, which can bring significant advantages to six…
A Deep Learning-Based Approach for Cell Outage Compensation in NOMA Networks
Elaheh Vaezpour, Layla Majzoobi, Mohammad Akbari +2
Cell outage compensation enables a network to react to a catastrophic cell failure quickly and serve users in the outage zone uninterruptedly. Utilizing the promising benefits of n…
A Flexible and Lightweight Group Authentication Scheme
Yucel Aydin, Gunes Karabulut Kurt, Enver Ãzdemir +1
Internet of Things (IoT) networks are becoming a part of our daily lives, as the number of IoT devices around us are surging. The authentication of millions of connected things and…
HAPS-Complemented Terrestrial Networks
Animesh Yadav, Halim Yanikomeroglu
The paper proposes using a full‑duplex high‑altitude platform station (HAPS) as a relay to boost downlink rates for cell‑edge users in a multicell MIMO network, and presents a beam…
PAPR Analysis for MIMO FTN Signaling with Gaussian Symbols
Zichao Zhang, Melda Yuksel, Gokhan M. Guvensen +1
Faster-than-Nyquist signaling serves as a promising solution for improving spectral efficiency in future generations of communications. However, its nature of fast acceleration bri…
HAPS for 6G Networks: Potential Use Cases, Open Challenges, and Possible Solutions
Omid Abbasi, Animesh Yadav, Halim Yanikomeroglu +3
High altitude platform station (HAPS), which is deployed in the stratosphere at an altitude of 20-50 kilometres, has attracted much attention in recent years due to their large foo…
Latency versus Transmission Power Trade-off in Free-Space Optical (FSO) Satellite Networks with Multiple Inter-Continental Connections
Jintao Liang, Aizaz Chaudhry, John Chinneck +5
In free-space optical satellite networks (FSOSNs), satellites connected via laser inter-satellite links (LISLs), latency is a critical factor, especially for long-distance inter-co…
Distributed Beamforming in Massive MIMO Communication for a Constellation of Airborne Platform Stations
Hesam Khoshkbari, Georges Kaddoum, Bassant Selim +2
Non-terrestrial base stations (NTBSs), including high-altitude platform stations (HAPSs) and hot-air balloons (HABs), are integral to next-generation wireless networks, offering co…
MIMO-NOMA Enabled Sectorized Cylindrical Massive Antenna Array for HAPS with Spatially Correlated Channels
Rozita Shafie, Mohammad Javad Omidi, Omid Abbasi +1
The high altitude platform station (HAPS) technology is garnering significant interest as a viable technology for serving as base stations in communication networks. However, HAPS…
Optimal Location of Cellular Base Station via Convex Optimization
Elham Kalantari, Sergey Loyka, Halim Yanikomeroglu +1
An optimal base station (BS) location depends on the traffic (user) distribution, propagation pathloss and many system parameters, which renders its analytical study difficult so t…
The New Frontier in RAN Heterogeneity: Multi-tier Drone-Cells
Irem Bor-Yaliniz, Halim Yanikomeroglu
In cellular networks, the locations of the radio access network (RAN) elements are determined mainly based on the long-term traffic behaviour. However, when the random and hard-to-…
Solutions for Sustainable and Resilient Communication Infrastructure in Disaster Relief and Management Scenarios
Bilal Karaman, Ilhan Basturk, Sezai Taskin +6
As natural disasters become more frequent and severe, ensuring a resilient communications infrastructure is of paramount importance for effective disaster response and recovery. Th…
A Cognitive Radio Enabled RF/FSO Communication Model for Aerial Relay Networks: Possible Configurations and Opportunities
Eylem Erdogan, Ibrahim Altunbas, Nihat Kabaoglu +1
Two emerging technologies, cognitive radio (CR) and free-space optical (FSO) communication, have created much interest both in academia and industry recently as they can fully util…
Throughput-based Design for Polar Coded-Modulation
Hossein Khoshnevis, Ian Marsland, Halim Yanikomeroglu
Typically, forward error correction (FEC) codes are designed based on the minimization of the error rate for a given code rate. However, for applications that incorporate hybrid au…
Low-Complexity Decoder for Overloaded Uniquely Decodable Synchronous CDMA
Michel Kulhandjian, Claude D'Amours, Hovannes Kulhandjian +3
We consider the problem of designing a low-complexity decoder for antipodal uniquely decodable (UD) /errorless code sets for overloaded synchronous code-division multiple access (C…
Green Satellite Networks Using Segment Routing and Software-Defined Networking
Jintao Liang, Pablo G. Madoery, Chung-Horng Lung +2
This paper presents a comprehensive evaluation of network performance in software defined networking (SDN)-based low Earth orbit (LEO) satellite networks, focusing on the Telesat L…
Map-Based Path Loss Prediction in Multiple Cities Using Convolutional Neural Networks
Ryan G. Dempsey, Jonathan Ethier, Halim Yanikomeroglu
Radio deployments and spectrum planning benefit from path loss predictions. Obstructions along a communications link are often considered implicitly or through derived metrics such…
Multi-user Joint Maximum-Likelihood Detection in Uplink NOMA-IoT Networks: Removing the Error Floor
Hichem Semira, Ferdi Kara, Hakan Kaya +1
The Internet of Things (IoT) framework requires a massive number of connection thus demanding spectral efficient solutions such as Non-Orthogonal Multiple Access (NOMA). However, t…
Big-data-driven and AI-based framework to enable personalization in wireless networks
Rawan Alkurd, Ibrahim Abualhaol, Halim Yanikomeroglu
Current communication networks use design methodologies that prevent the realization of maximum network efficiency. In the first place, while users' perception of satisfactory serv…
Performance Analysis of HAPS-RIS-Assisted MIMO Systems Under Phase-Dependent Amplitude Response Using Saddle Point Approximation
Tayfun Yilmaz, Haci Ilhan, Ali Gorcin +1
The paper develops an analytical framework to characterize the SNR distribution and outage probability of high‑altitude platform station (HAPS)‑mounted RIS‑assisted MIMO systems, u…
Graph Attention Networks for Channel Estimation in RIS-assisted Satellite IoT Communications
KürÅat Tekbıyık, GüneÅ Karabulut Kurt, Ali Rıza Ekti +1
Direct-to-satellite (DtS) communication has gained importance recently to support globally connected Internet of things (IoT) networks. However, relatively long distances of densel…
Faded-Experience Trust Region Policy Optimization for Model-Free Power Allocation in Interference Channel
Mohammad G. Khoshkholgh, Halim Yanikomeroglu
Policy gradient reinforcement learning techniques enable an agent to directly learn an optimal action policy through the interactions with the environment. Nevertheless, despite it…
UAV-based Crowd Surveillance in Post COVID-19 Era
Nizar Masmoudi, Wael Jaafar, Safa Cherif +2
To cope with the current pandemic situation and reinstate pseudo-normal daily life, several measures have been deployed and maintained, such as mask wearing, social distancing, han…
Green Traffic Engineering for Satellite Networks Using Segment Routing Flexible Algorithm
Jintao Liang, Pablo G. Madoery, Chung-Horng Lung +2
Large-scale low-Earth-orbit (LEO) constellations demand routing that simultaneously minimizes energy, guarantees delivery under congestion, and meets latency requirements for time-…
Toward a Smart Resource Allocation Policy via Artificial Intelligence in 6G Networks: Centralized or Decentralized?
Ali Nouruzi, Atefeh Rezaei, Ata Khalili +4
In this paper, we design a new smart softwaredefined radio access network (RAN) architecture with important properties like flexibility and traffic awareness for sixth generation (…
Energy-Efficient RIS-Assisted Satellites for IoT Networks
KürÅat Tekbıyık, GüneÅ Karabulut Kurt, Halim Yanikomeroglu
The use of satellites to provide ubiquitous coverage and connectivity for densely deployed Internet of Things (IoT) networks is expected to be a reality in emerging 6G networks. Ye…
Efficient 3D Aerial Base Station Placement Considering Users Mobility by Reinforcement Learning
Rozhina Ghanavi, Elham Kalantari, Maryam Sabbaghian +2
This paper considers an aerial base station (aerial-BS) assisted terrestrial network where user mobility is taken into account. User movement changes the network dynamically which…
Hemispherical Antenna Array Architecture for High-Altitude Platform Stations (HAPS) for Uniform Capacity Provision
Omid Abbasi, Halim Yanikomeroglu, Georges Kaddoum
In this paper, we present a novel hemispherical antenna array (HAA) designed for high-altitude platform stations (HAPS). A significant limitation of traditional rectangular antenna…
Dynamics of Quadrotor UAVs for Aerial Networks: An Energy Perspective
Wael Jaafar, Halim Yanikomeroglu
In this letter, we present a model for quadrotor unmanned aerial vehicles (UAVs), including control, communication, and wireless charging. In so doing, we investigate associated en…
Anchor-and-Connect: Robotic Aerial Base Stations Transforming 6G Infrastructure
Wen Shang, Yuan Liao, Vasilis Friderikos +1
Despite the significant attention that aerial base stations (ABSs) have received recently, their practical implementation is severely weakened by their limited endurance due to the…
Cooperation in Space: HAPS-Aided Optical Inter-Satellite Connectivity with Opportunistic Scheduling
Eylem Erdogan, Ibrahim Altunbas, Gunes Karabulut Kurt +1
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…
A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM
Ahmed Ibrahim, Ebrahim Bedeer, Halim Yanikomeroglu
Faster-than-Nyquist (FTN) signaling is a promising non-orthogonal pulse modulation technique that can improve the spectral efficiency (SE) of next generation communication systems…
Authentication and Handover Challenges and Methods for Drone Swarms
Yucel Aydin, Gunes K. Kurt, Enver Ozdemir +1
Drones are begin used for various purposes such as border security, surveillance, cargo delivery, visual shows and it is not possible to overcome such intensive tasks with a single…
Data-Efficient Energy-Aware Participant Selection for UAV-Enabled Federated Learning
Youssra Cheriguene, Wael Jaafar, Chaker Abdelaziz Kerrache +3
Unmanned aerial vehicle (UAV)-enabled edge federated learning (FL) has sparked a rise in research interest as a result of the massive and heterogeneous data collected by UAVs, as w…
Path-Based Quantum Meta-Learning for Adaptive Optimization of Reconfigurable Intelligent Surfaces
Noha Hassan, Xavier Fernando, Halim Yanikomeroglu
Reconfigurable intelligent surfaces (RISs) modify signal reflections to enhance wireless communication capabilities. Classical RIS phase optimization is highly non convex and chall…
High Altitude Platform Station based Super Macro Base Station (HAPS-SMBS) Constellations
Md Sahabul Alam, Gunes Karabulut Kurt, Halim Yanikomeroglu +2
High altitude platform station (HAPS) systems have recently attracted renewed attention. While terrestrial and satellite technologies are well-established for providing connectivit…
Pilot-Assisted Faster-than-Nyquist Signaling for HRLLC: A Non-Asymptotic Approach
Ahmet Oguz Kislal, Melda Yuksel, Ali Gorcin +1
This paper investigates the performance of faster-than-Nyquist (FTN) signaling within the context of hyper-reliable low-latency communications (HRLLC), specifically focusing on the…
A Weather-Dependent Hybrid RF/FSO Satellite Communication for Improved Power Efficiency
Olfa Ben Yahia, Eylem Erdogan, Gunes Karabulut Kurt +2
Recent studies have shown that satellite communication (SatCom) will have a fundamental role in the next generation non-terrestrial networks (NTN). In SatCom, radio-frequency (RF)…
Dynamic Activation and Assignment of SDN Controllers in LEO Satellite Constellations
Wafa Hasanain, Pablo G. Madoery, Halim Yanikomeroglu +5
Software-defined networking (SDN) has emerged as a promising approach for managing traditional satellite communication. This enhances opportunities for future services, including i…
Optimizing Network Performance and Resource Allocation in HAPS-UAV Integrated Sensing and Communication Systems for 6G
Parisa Kanani, Mohammad Javad Omidi, Mahmoud Modarres-Hashemi +1
This paper proposes an innovative approach by leveraging uncrewed aerial vehicles (UAVs) as base stations (BSs) and a high-altitude platform station (HAPS) as the central processin…
The Digital Divide in Canada and the Role of LEO Satellites in Bridging the Gap
Tuheen Ahmmed, Afsoon Alidadi, Zichao Zhang +2
Overcoming the digital divide in rural and remote areas has always been a big challenge for Canada with its huge geographical area. In 2016, the Canadian Radio-television and Telec…
Low-Complexity Detection for Faster-than-Nyquist Signaling based on Probabilistic Data Association
Michel Kulhandjian, Ebrahim Bedeer, Hovannes Kulhandjian +2
In this paper, we investigate the sequence estimation problem of faster-than-Nyquist (FTN) signaling as a promising approach for increasing spectral efficiency (SE) in future commu…
Chirped DFT-s-OFDM: A new single-carrier waveform with enhanced LMMSE noise suppression
Yujie Liu, Yong Liang Guan, David González G. +1
In this paper, a new single-carrier waveform, called chirped discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM), is proposed for the sixth ge…
A Novel Multiobjective Cell Switch-Off Framework for Cellular Networks
David González G., Jyri Hämäläinen, Halim Yanikomeroglu +2
Cell Switch-Off (CSO) is recognized as a promising approach to reduce the energy consumption in next-generation cellular networks. However, CSO poses serious challenges not only fr…
Polar Coded Faster-than-Nyquist (FTN) Signaling with Symbol-by-Symbol Detection
Abdulsamet Caglan, Adem Cicek, Enver Cavus +2
Reduced complexity faster-than-Nyquist (FTN) signaling systems are gaining increased attention as they provide improved bandwidth utilization for an acceptable level of detection c…
Multi-Layer Network Formation through HAPS Base Station and Transmissive RIS-Equipped UAV
Faical Khennoufa, Khelil Abdellatif, Halim Yanikomeroglu +4
In order to bolster future wireless networks, there has been a great deal of interest in non-terrestrial networks, especially aerial platforms including high-altitude platform stat…
A Vision and Framework for the High Altitude Platform Station (HAPS) Networks of the Future
Gunes Kurt, Mohammad G. Khoshkholgh, Safwan Alfattani +5
A High Altitude Platform Station (HAPS) is a network node that operates in the stratosphere at an of altitude around 20 km and is instrumental for providing communication services.…
AI-Enhanced Spatial Cellular Traffic Demand Prediction with Contextual Clustering and Error Correction for 5G/6G Planning
Mohamad Alkadamani, Colin Brown, Halim Yanikomeroglu
Accurate spatial prediction of cellular traffic demand is essential for 5G NR capacity planning, network densification, and data-driven 6G planning. Although machine learning can f…
Data-Driven Spectrum Demand Prediction: A Spatio-Temporal Framework with Transfer Learning
Amin Farajzadeh, Hongzhao Zheng, Sarah Dumoulin +3
Accurate spectrum demand prediction is crucial for informed spectrum allocation, effective regulatory planning, and fostering sustainable growth in modern wireless communication ne…
A Novel CNN Based Standalone Detector for Faster-than-Nyquist Signaling
Osman Tokluoglu, Enver Cavus, Ebrahim Bedeer +1
This paper presents a novel convolutional neural network (CNN)-based detector for faster-than-Nyquist (FTN) signaling, introducing structured fixed kernel layers with domain-inform…
Energy-Efficient Multi-UAV Data Collection for IoT Networks with Time Deadlines
Oussama Ghdiri, Wael Jaafar, Safwan Alfattani +2
In this paper, we focus on energy-efficient UAV-based IoT data collection in sensor networks in which the sensed data have different time deadlines. In the investigated setting, th…
Error Performance Analysis of Multi-user Detection in Uplink-NOMA with Adaptive -QAM
Hichem Semira, Ferdi Kara, Hakan Kaya +1
This work provides a generalized performance analysis for the multi-user uplink-NOMA system with adaptive square quadrature amplitude modulation (QAM) over Rayleigh fading channels…
HAPS-RIS-assisted IoT Networks for Disaster Recovery and Emergency Response: Architecture, Application Scenarios, and Open Challenges
Bilal Karaman, Ilhan Basturk, Engin Zeydan +4
Reliable and resilient communication is essential for disaster recovery and emergency response, yet terrestrial infrastructure often fails during large-scale natural disasters. Thi…
Mobility-assisted Over-the-Air Computation for Backscatter Sensor Networks
Amin Farajzadeh, Ozgur Ercetin, Halim Yanikomeroglu
Future intelligent systems will consist of a massive number of battery-less sensors, where quick and accurate aggregation of sensor data will be of paramount importance. Over-the-a…
Impact of Objective Function on Spectral Efficiency in Integrated HAPS-Terrestrial Networks
Afsoon Alidadi Shamsabadi, Animesh Yadav, Halim Yanikomeroglu
Integrating non-terrestrial networks (NTNs), in particular high altitude platform stations (HAPS), with terrestrial networks, referred to as vHetNets, emerges as a promising future…
Low Complexity Lookup Table Aided Soft Output Semidefinite Relaxation based Faster-than-Nyquist Signaling Detector
Adem Cicek, Ian Marsland, Enver Cavus +2
Spectrum scarcity necessitates innovative, spectral-efficient strategies to meet the ever-growing demand for high data rates. Faster-than-Nyquist (FTN) signaling emerges as a compe…
Capacity Region of Asynchronous Multiple Access Channels with FTN
Zichao Zhang, Melda Yuksel, Gokhan M. Guvensen +1
This paper studies the capacity region of asynchronous multiple access channel (MAC) with faster-thanNyquist (FTN) signaling. We first express the capacity region in the frequency…
Separating the Effect of Independent Interference Sources with Rayleigh Faded Signal Link: Outage Analysis and Applications
Arshdeep S. Kahlon, Sebastian S. Szyszkowicz, Shalini Periyalwar +1
We show that, for independent interfering sources and a signal link with exponentially distributed received power, the total probability of outage can be decomposed as a simple exp…
Tackling Non-IIDness in HAPS-Aided Federated Learning
Amin Farajzadeh, Animesh Yadav, Halim Yanikomeroglu
High-altitude platform stations (HAPS) enable large-scale federated learning (FL) in non-terrestrial networks (NTN) by providing wide-area coverage and predominantly line-of-sight…
GNN-based Online Beamforming Design for HAPS-Assisted NTN
Lavanya S S Anjapuli, Animesh Yadav, Halim Yanikomeroglu
The paper proposes using a high‑altitude platform station (HAPS) to relay data for cell‑edge users and designs beamforming vectors at both the terrestrial base station and HAPS via…
RSS-Based UAV-BS 3-D Mobility Management via Policy Gradient Deep Reinforcement Learning
Mohammad Ghadir Khoshkholgh, Halim Yanikomeroglu
We address the mobility management of an autonomous UAV-mounted base station (UAV-BS) that provides communication services to a cluster of users on the ground while the geographica…
A Lightweight Machine Learning Assisted Power Optimization for Minimum Error in NOMA-CRS over Nakagami- channels
Ferdi Kara, Hakan Kaya, Halim Yanikomeroglu
Non-orthogonal multiple access based cooperative relaying system (NOMA-CRS) has been proposed to alleviate the decay in spectral efficiency of the conventional CRS. However, existi…
Optical Wireless Satellite Networks versus Optical Fiber Terrestrial Networks: The Latency Perspective
Aizaz U. Chaudhry, Halim Yanikomeroglu
Formed by using laser inter-satellite links (LISLs) among satellites in upcoming low Earth orbit and very low Earth orbit satellite constellations, optical wireless satellite netwo…
Analysis of a HAPS-Aided GNSS in Urban Areas using a RAIM Algorithm
Hongzhao Zheng, Mohamed Atia, Halim Yanikomeroglu
The global averaged civilian positioning accuracy is still at meter level for all existing Global Navigation Satellite Systems (GNSSs), and the performance is even worse in urban a…
Interplay Between NOMA and GSSK: Detection Strategies and Performance Analysis
Sanjeev Gurugopinath, Sami Muhaidat, Rajaleksmi Kishore +3
Non-orthogonal multiple access (NOMA) is a technology enabler for the fifth generation and beyond networks, which has shown a great flexibility such that it can be readily integrat…
Bit-Interleaved Multiple Access: Improved Fairness, Reliability, and Latency for Massive IoT Networks
Ferdi Kara, Hakan Kaya, Halim Yanikomeroglu +2
In this paper, we propose bit-interleaved multiple access (BIMA) to enable Internet-of-Things (IoT) networks where a massive connection is required with limited resource blocks. Fi…
Optimized Distributed Inter-cell Interference Coordination (ICIC) Scheme using Projected Subgradient and Network Flow Optimization
Akram Bin Sediq, Rainer Schoenen, Halim Yanikomeroglu +1
In this paper, we tackle the problem of multi-cell resource scheduling, where the objective is to maximize the weighted sum-rate through inter-cell interference coordination (ICIC)…
A Vision of Self-Evolving Network Management for Future Intelligent Vertical HetNet
Tasneem Darwish, Gunes Karabulut Kurt, Halim Yanikomeroglu +2
Future integrated terrestrial-aerial-satellite networks will have to exhibit some unprecedented characteristics for the provision of both communications and computation services, a…
Multidimensional Constellations for Uplink SCMA Systems --- A Comparative Study
Monirosharieh Vameghestahbanati, Ian Marsland, Ramy H. Gohary +1
Sparse code multiple access (SCMA) is a class of non-orthogonal multiple access (NOMA) that is proposed to support uplink machine-type communication services. In an SCMA system, de…
Cross-Slice Co-Location Risk-Aware SFC Provisioning in Multi-Slice LEO Satellite Networks
Mohammed Mahyoub, Wael Jaafar, Sami Muhaidat +1
We address cross-slice co-location risk in multi-slice low Earth orbit (LEO) satellite edge networks, where virtual network functions (VNFs) from different network slices sharing t…
Design of Non-orthogonal Multiple Access Enhanced Backscatter Communication
Jing Guo, Xiangyun Zhou, Salman Durrani +1
Backscatter communication (BackCom), which allows a backscatter node (BN) to communicate with the reader by modulating and reflecting the incident continuous wave from the reader,…
Securing the Inter-Spacecraft Links: Physical Layer Key Generation from Doppler Frequency Shift
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. As a novel secrecy source, the spacecrafts utilize Do…
Artificial Intelligence, Ambient Backscatter Communication and Non-Terrestrial Networks: A 6G Commixture
Muhammad Ali Jamshed, Bushra Haq, Muhammad Ahmed Mohsin +2
The advent of Non-Terrestrial Networks (NTN) represents a compelling response to the International Mobile Telecommunications 2030 (IMT-2030) framework, enabling the delivery of adv…
NOMA Computation Over Multi-Access Channels for Multimodal Sensing
Michel Kulhandjian, Gunes Karabulut Kurt, Hovannes Kulhandjian +2
An improved mean squared error (MSE) minimization solution based on eigenvector decomposition approach is conceived for wideband non-orthogonal multiple-access based computation ov…
Bit-Interleaved Coded Energy-Based Modulation with Iterative Decoding
Ali Fazeli, Ha H. Nguyen, Halim Yanikomeroglu
This paper develops a low-complexity near-optimal non-coherent receiver for a multi-level energy-based coded modulation system. Inspired by the turbo processing principle, we incor…
Multi-Tier Hierarchical Federated Learning-assisted NTN for Intelligent IoT Services
Amin Farajzadeh, Animesh Yadav, Halim Yanikomeroglu
In the ever-expanding landscape of the IoT, managing the intricate network of interconnected devices presents a fundamental challenge. This leads us to ask: "What if we invite the…
A Very Low Complexity Successive Symbol-by-Symbol Sequence Estimator for Faster-than-Nyquist Signaling
Ebrahim Bedeer, Mohamed Hossam Ahmed, Halim Yanikomeroglu
In this paper, we investigate the sequence estimation problem of binary and quadrature phase shift keying faster-than-Nyquist (FTN) signaling and propose two novel low-complexity s…
Device-to-Device Communication Underlaying a Finite Cellular Network Region
Jing Guo, Salman Durrani, Xiangyun Zhou +1
Underlay in-band device-to-device (D2D) communication can improve the spectrum efficiency of cellular networks. However, the coexistence of D2D and cellular users causes inter-cell…
3D Placement of an Unmanned Aerial Vehicle Base Station for Maximum Coverage of Users with Different QoS Requirements
Mohamed Alzenad, Amr El-Keyi, Halim Yanikomeroglu
The need for a rapid-to-deploy solution for providing wireless cellular services can be realized by unmanned aerial vehicle base stations (UAV-BSs). To the best of our knowledge, t…
Free-Space Optical (FSO) Satellite Networks Performance Analysis: Transmission Power, Latency, and Outage Probability
Jintao Liang, Aizaz U. Chaudhry, Eylem Erdogan +5
In free-space optical satellite networks (FSOSNs), satellites can have different laser inter-satellite link (LISL) ranges for connectivity. Greater LISL ranges can reduce network l…
Coverage and Rate Analysis for Unmanned Aerial Vehicle Base Stations with LoS/NLoS Propagation
Mohamed Alzenad, Halim Yanikomeroglu
The use of unmanned aerial vehicle base stations (UAV-BSs) as airborne base stations has recently gained great attention. In this paper, we model a network of UAV-BSs as a Poisson…
Smart Resource Allocation Model via Artificial Intelligence in Software Defined 6G Networks
Ali Nouruzi, Atefeh Rezaei, Ata Khalili +4
In this paper, we design a new flexible smart software-defined radio access network (Soft-RAN) architecture with traffic awareness for sixth generation (6G) wireless networks. In p…
A New Formula for the BER of Binary Modulations with Dual-Branch Selection over Generalized-K Composite Fading Channels
Imran Shafique Ansari, Saad Al-Ahmadi, Ferkan Yilmaz +2
Error performance is one of the main performance measures and derivation of its closed-form expression has proved to be quite involved for certain systems. In this letter, a unifie…
DQN Based Joint UAV Trajectory and Association Planning in NTN Assisted Networks
Afsoon Alidadi Shamsabadi, Cosmas Mwaba, Thomas Nugent +4
Advanced Air Mobility (AAM) has emerged as a key pillar of next-generation transportation systems, encompassing a wide range of uncrewed aerial vehicle (UAV) applications. To enabl…
A Novel Domain-Aware CNN Architecture for Faster-than-Nyquist Signaling Detection
Osman Tokluoglu, Enver Cavus, Ebrahim Bedeer +1
This paper proposes a convolutional neural network (CNN)-based detector for faster-than-Nyquist (FTN) signaling that employs structured fixed kernel layers with domain-informed mas…
Power Control in Spectrum Sharing Systems with Almost-Zero Inter-System Signaling Overhead
Mohammad Ghadir Khoshkholgh, Halim Yanikomeroglu
Power allocation in spectrum sharing systems is challenging due to excessive interference that the secondary system could impose on the primary system. Therefore, an interference t…
Downlink Coverage and Rate Analysis of an Aerial User in Vertical Heterogeneous Networks (VHetNets)
Nesrine Cherif, Mohamed Alzenad, Halim Yanikomeroglu +1
In this paper, we analyze the downlink coverage probability and rate of an aerial user in vertical HetNets (VHetNets) comprising aerial base stations (aerial-BSs) and terrestrial-B…
Personalized Resource Allocation in Wireless Networks: An AI-Enabled and Big Data-Driven Multi-Objective Optimization
Rawan Alkurd, Ibrahim Abualhaol, Halim Yanikomeroglu
The design and optimization of wireless networks have mostly been based on strong mathematical and theoretical modeling. Nonetheless, as novel applications emerge in the era of 5G…
HAPS-ISAC for 6G: Architecture, Design Trade-offs, and a Practical Roadmap
Parisa Kanani, Mohammad Javad Omidi, Mahmoud Modarres-Hashemi +1
To meet the ambitious goals of next-generation 6G networks, including ultra-high data rates and ubiquitous coverage, we propose a novel high-altitude platform station (HAPS)-based…
Swarm of Robotic Aerial Base Stations for mmWave Multi-Hop Backhauling
Yuan Liao, Vasilis Friderikos, Halim Yanikomeroglu
Robotic aerial base stations (RABSs) that are able to anchor at tall urban landforms are expected to bring further flexibility to millimeter-wave (mmWave) multi-hop backhaul networ…
FLSTRA: Federated Learning in Stratosphere
Amin Farajzadeh, Animesh Yadav, Omid Abbasi +2
We propose a federated learning (FL) in stratosphere (FLSTRA) system, where a high altitude platform station (HAPS) facilitates a large number of terrestrial clients to collaborati…