A5076624585- Advanced Wireless Communication Technologies
- Energy Harvesting in Wireless Networks
- UAV Applications and Optimization
- Optical Wireless Communication Technologies
- Satellite Communication Systems
- Advanced MIMO Systems Optimization
- Molecular Communication and Nanonetworks
- IoT Networks and Protocols
- Antenna Design and Analysis
- Wireless Power Transfer Systems
- IoT and Edge/Fog Computing
- Cooperative Communication and Network Coding
- Advanced Photonic Communication Systems
- Advanced Antenna and Metasurface Technologies
- Metamaterials and Metasurfaces Applications
- Power Line Communications and Noise
- Energy Efficient Wireless Sensor Networks
- Wireless Body Area Networks
- Spacecraft Design and Technology
- Full-Duplex Wireless Communications
- Bluetooth and Wireless Communication Technologies
- Wireless Communication Networks Research
- History and Developments in Astronomy
- Historical Astronomy and Related Studies
- Radar Systems and Signal Processing
Aristotle University of Thessaloniki
2018-2025
Southwest Jiaotong University
2022-2025
University of Western Macedonia
2024
University of Macedonia
2023-2024
Aalto University
2023
Lebanese American University
2023
University of Cyprus
2023
Institut Fresnel
2023
Centrale Marseille
2023
Aix-Marseille Université
2023
Random access (RA) has recently been revisited and considered as a key technology for the medium control layer of Internet Things applications. Compared to other RA protocols, slotted ALOHA (SA) advantages low complexity elimination partially overlapping transmissions, reducing number collisions, however it may suffer from congestion traffic load devices increase. To this end, two protocols based on SA uplink non-orthogonal multiple are proposed applied wireless sensor networks powered...
Meta-surfaces intend to improve the performance of future wireless networks significantly by controlling propagation and shaping radio waves according generalized Snell's law. A recent application meta-surfaces are reconfigurable intelligent surfaces that mainly proposed for reflection steering impinging signal. In this article, we introduce randomly (RRSs) aiming diffuse incoming wave characterize an RRS-assisted communication network. To facilitate analysis network, first, present novel...
Data collection in massive Internet of Things networks requires novel and flexible methods. Unmanned aerial vehicles (UAVs) are foreseen as a means to collect data rapidly even remote areas without static telecommunication infrastructure. In this direction, UAV-mounted reconfigurable intelligent surfaces (RISs) aid reducing the hardware requirements signal processing complexity at UAV side, while increasing network’s energy efficiency coverage. Hence, paper, we propose utilization RIS for...
Reconfigurable intelligent surfaces (RIS) have been presented as a solution to realize the concept of smart radio environments, wherein uninterrupted coverage and extremely high quality service can be ensured. In this letter, assuming that multiple RIS are deployed in propagation environment, performance cascaded network affected by imperfect phase estimation is evaluated. Specifically, we derive closed-form expressions for outage probability, ergodic capacity average symbol error...
The use of new multiple access schemes emerges as a necessity in order to efficiently cope with the massive connectivity, reliability and high throughput requirements next generation Internet Things. In this letter, we study performance an uplink rate-splitting (RSMA) network two sources, terms outage probability throughput. Specifically, derive closed-form expressions for transmitted messages then, utilize them sources random medium control protocol based on slotted ALOHA RSMA.
Optimizing the energy efficiency (EE) of wireless networks, is one key priorities in design beyond 5G mobile technologies.In this pursuit, use new frequency bands, combination with advanced multiple access protocols and cooperative communications strategies, has recently shown promising results.To end, paper investigates an indoor network that aggregates communication resources visible light radio (RF) taking advantage complementary advantages offered by each these technologies.More...
The requirement of the upcoming sixth-generation (6G) wireless communication systems to significantly elevate services enhanced mobile broadband (eMBB) and massive machine-type communications (mMTC) necessitates design investigation appropriate multiple access schemes. This paper investigates impact random source deployment on performance uplink systems, emphasizing implications non-orthogonality in contention-free contention-based For latter scheme, we combine strengths slotted ALOHA...
Dynamic spectrum allocation for diverse future applications is anticipated to be supported by sixth-generation (6G) wireless networks. Specifically, automatic modulation classification (AMC) has been highlighted as a technique enhance spectral utilization. However, its accuracy influenced not only additive white Gaussian noise and channel fading but also phase imperfections (PI) coming from unsynchronized local oscillators imperfect state information (CSI), leading degraded performance. To...
Machine learning (ML) empowers biomedical systems with the capability to optimize their performance through modeling of available data extremely well, without using strong assumptions about modeled system. Especially in nano-scale biosystems, where generated sets are too vast and complex mentally parse computational assist, ML is instrumental analyzing extracting new insights, accelerating material structure discoveries designing experience as well supporting communications networks....
Non-orthogonal multiple access (NOMA) can be efficiently used in land mobile satellite (LMS) communications order to increase link availability, coverage and reliability. In this letter, we study -for first time the literature- outage performance of an uplink LMS system consisting two terrestrial user nodes which perform NOMA uplink, with either successive interference cancellation or joint decoding at receiver. Closed-form expressions for probability are derived both cases assuming...
With the exponential increase of number devices in communication ecosystem toward upcoming sixth generation (6G) wireless networks, more enabling technologies and potential architectures are necessary to fulfill networking requirements high throughput, massive connectivity, ultra reliability, heterogeneous quality service (QoS). In this work, we consider an uplink network consisting a primary user (PU) secondary (SU) and, by integrating concept cognitive radio multiple access, two protocols...
To compensate for severe blockages and achieve flexible pervasive network access, UAV-mounted RISs have recently attracted research interest. In this work, a solar-powered RIS (SUR) system is investigated, where solar cells are utilized to provide supplementary propulsion power. maximize the energy efficiency of SUR system, optimal joint active passive beamforming, as well energy-constrained UAV trajectory, i.e., its velocity placement, derived in closed form. Furthermore, subject size,...
In the evolving landscape of sixth-generation (6G) wireless networks, unmanned aerial vehicles (UAVs) have emerged as transformative tools for dynamic and adaptive connectivity. However, dynamically adjusting their position to offer favorable communication channels introduces operational challenges in terms energy consumption, especially when integrating advanced technologies like reconfigurable intelligent surfaces (RISs) full-duplex relays (FDRs). To this end, by recognizing pivotal role...
In order to realize massive connectivity, high spectral, and energy efficiency in future internet of things (IoT) networks, reconfigurable intelligent surfaces (RISs) are considered as a promising solution with their low cost channel-adjusting ability. However, the ever-growing number devices RIS-empowered IoT networks requires achieving self-sustainability for entire network. Motivated by this, simultaneous wireless information power transfer system empowered wireless-powered RIS has been...
A primary objective of the forthcoming sixth generation (6G) wireless networking is to support demanding applications, while ensuring energy efficiency. Programmable environments (PWEs) have emerged as a promising solution, leveraging reconfigurable intelligent surfaces (RISs), control propagation and deliver exceptional quality-of-service. In this paper, we analyze performance network supported by <italic xmlns:mml="http://www.w3.org/1998/Math/MathML"...
The effective integration of unmanned aerial vehicles (UAVs) in future wireless communication systems depends on the conscious use their limited energy, which constrains flight time. Reconfigurable intelligent surfaces (RISs) can be used combination with UAVs aim to improve performance without increasing complexity at UAVs' side. In this letter, we propose a synergetic UAV-RIS system, utilizing UAV highly directional antenna aiming RIS. proposed scenario applied all air-to-ground...
We present a new approach to Extended Reality (XR), denoted as iCOPYWAVES, which seeks offer naturally low-latency operation and cost effectiveness, overcoming the critical scalability issues faced by existing solutions. iCOPYWAVES is enabled emerging PWEs, recently proposed technology in wireless communications. Empowered intelligent (meta)surfaces, PWEs transform wave propagation phenomenon into software-defined process. leverage to: i) create, then ii) selectively copy scattered RF...
In this paper, the case of an aggregated VLC/RF network is presented, where users can be served simultaneously by both a visible light communication (VLC) carrier and radio-frequency (RF) to increase their achievable data rate. The optimal resource allocation in dependent on always having accurate channel state information (CSI), otherwise, outdated CSI, system prone sub-optimally allocating resources and, due limited coverage VLC, may also experience outage. A closed-form expression for...
Continuous and unobtrusive monitoring of daily human activities in homes can potentially improve the quality life prolong independent living for elderly people with chronic diseases by recognizing normal detecting gradual changes their conditions. However, existing activity recognition (HAR) solutions employ wearable video-based sensors, which either require dedicated devices to be carried user or raise privacy concerns. Radar sensors enable non-intrusive long-term monitoring, while they...
The sixth generation of wireless networks envisions intelligent and adaptive environments capable meeting the demands emerging applications such as immersive extended reality, advanced healthcare, metaverse. However, this vision requires overcoming critical challenges, including limitations conventional technologies in mitigating path loss dynamically adapting to diverse user needs. Among proposed reconfigurable technologies, pinching antenna systems (PASs) offer a novel way turn into...