Mohamed‐Slim Alouini
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View article: Machine Learning-based Path Loss Prediction in Suburban Environment in the Sub-6 GHz Band
Machine Learning-based Path Loss Prediction in Suburban Environment in the Sub-6 GHz Band Open
Accurate path loss (PL) prediction is crucial for successful network planning, antenna design, and performance optimization in wireless communication systems. Several conventional approaches for PL prediction have been adopted, but they ha…
View article: Aerial Solutions for Supporting Large-Scale Events: A Case Study of the Hajj Pilgrimage
Aerial Solutions for Supporting Large-Scale Events: A Case Study of the Hajj Pilgrimage Open
Large-scale events such as the Hajj attract two to three million participants annually, creating significant challenges in mobility, security, and connectivity. Existing solutions may be limited and prone to overload. This article proposes…
View article: Toward Sustainable Subterranean mMTC: Space-Air-Ground-Underground Networks Powered by LoRaWAN and Wireless Energy Transfer
Toward Sustainable Subterranean mMTC: Space-Air-Ground-Underground Networks Powered by LoRaWAN and Wireless Energy Transfer Open
Wireless underground sensor networks (WUSNs), which enable real-time sensing and monitoring of underground resources by underground devices (UDs), hold great promise for delivering substantial social and economic benefits across various ve…
View article: Towards SDG 17: How 6G Can Help Us To Connect The Unconnected
Towards SDG 17: How 6G Can Help Us To Connect The Unconnected Open
United Nations Sustainable Development Goal 17 (SDG 17) is all about connection and partnerships, to make sure everyone works together to achieve all the SDGs. Satellites are often referred to as Earth’s guardians because they are responsi…
View article: Performance Analysis of SAGIN from the Relay Perspective: A Spherical Stochastic Geometry Approach
Performance Analysis of SAGIN from the Relay Perspective: A Spherical Stochastic Geometry Approach Open
In recent years, the satellite-aerial-ground integrated network (SAGIN) has become essential in meeting the increasing demands for global wireless communications. In SAGIN, high-altitude platforms (HAPs) can serve as communication hubs and…
View article: UAV-Enabled Wireless-Powered Underground Communication Networks: A Novel Time Allocation Approach
UAV-Enabled Wireless-Powered Underground Communication Networks: A Novel Time Allocation Approach Open
Wireless-powered underground communication networks (WPUCNs), which allow underground devices (UDs) to harvest energy from wireless signals for battery-free communication, offer a promising solution for sustainable underground monitoring. …
View article: AI-Native Open RAN for Non-Terrestrial Networks: An Overview
AI-Native Open RAN for Non-Terrestrial Networks: An Overview Open
Non-terrestrial network (NTN) is expected to be a critical component of Sixth Generation (6G) networks, providing ubiquitous services and enhancing the system resilience. However, the high-altitude operation and inherent mobility of NTN in…
View article: Fundamental limits via CRB of semi-blind channel estimation in Massive MIMO systems
Fundamental limits via CRB of semi-blind channel estimation in Massive MIMO systems Open
This paper investigates the asymptotic behavior of the deterministic and stochastic Cramér-Rao Bounds (CRB) for semi-blind channel estimation in massive multiple-input multiple-output (MIMO) systems. We derive and analyze mathematically tr…
View article: Frontiers of Generative AI for Network Optimization: Theories, Limits, and Visions
Frontiers of Generative AI for Network Optimization: Theories, Limits, and Visions Open
While interest in the application of generative AI (GenAI) in network optimization has surged in recent years, its rapid progress has often overshadowed critical limitations intrinsic to generative models that remain insufficiently examine…
View article: Trajectory Optimization for Maximization of Laser Power Transfer to a Mobile UAV Through Turbulent Atmosphere
Trajectory Optimization for Maximization of Laser Power Transfer to a Mobile UAV Through Turbulent Atmosphere Open
To extend the flight duration of unmanned aerial vehicles (UAVs), laser-powered systems have recently been proposed that can charge a flying UAV with laser beams from the ground. In this study, we analyze the potential of using a ground-ba…
View article: Joint Trajectory and Resource Optimization for HAPs-SAR Systems with Energy-Aware Constraints
Joint Trajectory and Resource Optimization for HAPs-SAR Systems with Energy-Aware Constraints Open
This paper investigates the joint optimization of trajectory planning and resource allocation for a high-altitude platform stations synthetic aperture radar (HAPs-SAR) system. To support real-time sensing and conserve the limited energy bu…
View article: From Ground to Sky: Architectures, Applications, and Challenges Shaping Low-Altitude Wireless Networks
From Ground to Sky: Architectures, Applications, and Challenges Shaping Low-Altitude Wireless Networks Open
In this article, we introduce a novel low-altitude wireless network (LAWN), which is a reconfigurable, three-dimensional (3D) layered architecture. In particular, the LAWN integrates connectivity, sensing, control, and computing across aer…
View article: Design of 3D Beamforming and Deployment Strategies for ISAC-based HAPS Systems
Design of 3D Beamforming and Deployment Strategies for ISAC-based HAPS Systems Open
This paper explores high-altitude platform station (HAPS) systems enabled by integrated sensing and communication (ISAC), in which a HAPS simultaneously transmits communication signals and synthetic aperture radar (SAR) imaging signals to …
View article: Flying High to Bring the Internet Everywhere
Flying High to Bring the Internet Everywhere Open
High-altitude platform stations (HAPS) are systems that fly about 20 km above Earth to provide internet and monitor the environment. These solar-powered systems can stay in the air for months, bringing fast, reliable internet to remote are…
View article: Revolutionizing Wireless Networks With Intelligent Surfaces
Revolutionizing Wireless Networks With Intelligent Surfaces Open
Reconfigurable intelligent surfaces (RIS) are a new technology that can improve wireless networks by turning ordinary surfaces, like walls or ceilings, into tools for communication. These “smart mirrors” reflect and adjust signals, making …
View article: Tackling the Too-Many-Devices Problem
Tackling the Too-Many-Devices Problem Open
Integrated sensing and communication (ISAC) is a new technology designed to solve the problem of “device clutter”. By combining sensing and communication into one system, ISAC reduces the need for extra devices, saves energy, and makes net…
View article: Aerial Relay to Achieve Covertness and Secrecy
Aerial Relay to Achieve Covertness and Secrecy Open
In this work, a delay-tolerant unmanned aerial vehicle (UAV) relayed covert and secure communication framework is investigated. In this framework, a legitimate UAV serves as an aerial relay to realize communication when the direct link bet…
View article: High Altitude Platform-Based Caching and Multicasting for Rural Connectivity
High Altitude Platform-Based Caching and Multicasting for Rural Connectivity Open
Providing efficient and reliable content delivery in rural areas remains a significant challenge due to the lack of communication infrastructure. To bridge the digital divide, this paper investigates the potential of leveraging multiple hi…
View article: Super-LoRa: Enhancing LoRa Throughput via Payload Superposition
Super-LoRa: Enhancing LoRa Throughput via Payload Superposition Open
This paper presents Super-LoRa, a novel approach to enhancing the throughput of LoRa networks by leveraging the inherent robustness of LoRa modulation against interference. By superimposing multiple payload symbols, Super-LoRa significantl…
View article: GPS-Independent Localization Techniques for Disaster Rescue
GPS-Independent Localization Techniques for Disaster Rescue Open
In this article, we present the limitations of traditional localization techniques, such as those using Global Positioning Systems (GPS) and life detectors, in localizing victims during disaster rescue efforts. These techniques usually fal…
View article: Analyzing Localizability of LEO/MEO Hybrid Networks: A Stochastic Geometry Approach
Analyzing Localizability of LEO/MEO Hybrid Networks: A Stochastic Geometry Approach Open
With the increase in global positioning service demands and the requirement for more precise positioning, assisting existing medium and high orbit satellite-enabled positioning systems with low Earth orbit (LEO) satellites has garnered wid…
View article: Velocity-Aware Statistical Analysis of Peak AoI for Ground and Aerial Users
Velocity-Aware Statistical Analysis of Peak AoI for Ground and Aerial Users Open
In this paper, we present a framework to analyze the impact of user velocity on the distribution of the peak age-of-information (PAoI) for both ground and aerial users by using the dominant interferer-based approximation. We first approxim…
View article: Distributed Coordination for Heterogeneous Non-Terrestrial Networks
Distributed Coordination for Heterogeneous Non-Terrestrial Networks Open
To achieve global coverage and ubiquitous connectivity, the non-terrestrial network (NTN) has been regarded as a key enabler in the sixth generation (6G) network, which includes uncrewed aerial vehicles (UAVs), high-altitude platforms (HAP…
View article: Implementation of an IEEE 802.11ax-Based Maritime Mesh Network in the Red Sea
Implementation of an IEEE 802.11ax-Based Maritime Mesh Network in the Red Sea Open
In this article, we explore the limitations of satellite phones in meeting the communication needs of fishermen operating in the Red Sea. We propose AX-MMN, a maritime mesh network based on the IEEE 802.11ax standard, to address these shor…