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Learning-to-Learn the Wave Angle Estimation
A precise incident wave angle estimation in aerial communication is a key enabler in sixth-generation wireless communication network.
Continuous Power Beaming to Lunar Far Side from EMLP-2 Halo Orbit
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.
On the Mutuality between Localization and Channel Modeling in sub-THz
The use of sub-Terahertz (sub-THz) band is gaining considerable attention in 6G networks.
Free-Space Optical (FSO) Satellite Networks Performance Analysis: Transmission Power, Latency, and Outage Probability
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.
Tensor-based Space Debris Detection for Satellite Mega-constellations
The analysis reveals that the reflected signals of the THz can be utilized for the detection of space debris.
Terahertz Communication Testbeds: Challenges and Opportunities
This study investigates an experimental software defined radio (SDR) implementation on 180 GHz.
Secure and Robust Communications for Cislunar Space Networks
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.
Evolution of High Throughput Satellite Systems: Vision, Requirements, and Key Technologies
High throughput satellites (HTS), with their digital payload technology, are expected to play a key role as enablers of the upcoming 6G networks.
Dark Side of HAPS Systems: Jamming Threats towards Satellites
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.
Likelihood-based Sensor Calibration using Affine Transformation
The results show an improvement for both the simulation and the experiments with real data.
Mitigation of Misalignment Errors Over Inter-Satellite FSO Energy Harvesting
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.
An Experimental Study of NOMA for Connected Autonomous Vehicles
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).
Integrated Space Domain Awareness and Communication System
Space has been reforming and this evolution brings new threats that, together with technological developments and malicious intent, can pose a major challenge.
Physical Layer Authentication for LEO Satellite Constellations
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.
NOMA Computation Over Multi-Access Channels for Multimodal Sensing
This, in return, suggests that our proposed scheme is eminently suitable for multimodal sensor networks.
Cooperation in Space: HAPS-Aided Optical Inter-Satellite Connectivity with Opportunistic Scheduling
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.
Optical Satellite Eavesdropping
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.
HAPS-assisted Hybrid RF-FSO Multicast Communications: Error and Outage Analysis
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.
HAPS Selection for Hybrid RF/FSO Satellite Networks
In the first phase of transmission, the satellite selects the HAPS node that provides the highest signal-to-noise ratio (SNR).
Intermittent Jamming against Telemetry and Telecommand of Satellite Systems and A Learning-driven Detection Strategy
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.
A Weather-Dependent Hybrid RF/FSO Satellite Communication for Improved Power Efficiency
In SatCom, radio-frequency (RF) or free-space optical (FSO) communications can be used depending on the communication environment.
Caching and Computation Offloading in High Altitude Platform Station (HAPS) Assisted Intelligent Transportation Systems
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.
On the Use of HAPS to Increase Secrecy Performance in Satellite Networks
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.
Physical Layer Security Framework for Optical Non-Terrestrial Networks
In this work, we propose a new physical layer security framework for optical space networks.
Securing the Inter-Spacecraft Links: Physical Layer Key Generation from Doppler Frequency Shift
In this work, we propose a secret key generation procedure specifically designed for the inter-spacecraft communication links.
A Glimpse of Physical Layer Decision Mechanisms: Facts, Challenges, and Remedies
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.
Group Handover for Drone Base Stations
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
Securing the Inter-Spacecraft Links: Doppler Frequency Shift based Physical Layer Key Generation
We propose a novel physical layer secret key generation method for the inter-spacecraft communication links.
High Altitude Platform Station based Super Macro Base Station (HAPS-SMBS) Constellations
High altitude platform station (HAPS) systems have recently attracted renewed attention.
Energy-Efficient Over-the-Air Computation Scheme for Densely Deployed IoT Networks
The proposed MMSE estimator provides a signif- icant mean squared error improvement with reducing en- ergy consumption compared to the conventional estimator.
A Prospective Look: Key Enabling Technologies, Applications and Open Research Topics in 6G Networks
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.
