A5089805066- Mobile Ad Hoc Networks
- Cooperative Communication and Network Coding
- Wireless Communication Networks Research
- Advanced MIMO Systems Optimization
- Advanced Wireless Network Optimization
- Vehicular Ad Hoc Networks (VANETs)
- Opportunistic and Delay-Tolerant Networks
- Energy Efficient Wireless Sensor Networks
- Caching and Content Delivery
- Advanced Wireless Communication Techniques
- IoT and Edge/Fog Computing
- Millimeter-Wave Propagation and Modeling
- Wireless Networks and Protocols
- Advanced Wireless Communication Technologies
- Energy Harvesting in Wireless Networks
- Software-Defined Networks and 5G
- Indoor and Outdoor Localization Technologies
- COVID-19 epidemiological studies
- Antenna Design and Analysis
- Metamaterials and Metasurfaces Applications
- COVID-19 Pandemic Impacts
- Context-Aware Activity Recognition Systems
- Power Line Communications and Noise
- Advanced Antenna and Metasurface Technologies
- Blockchain Technology Applications and Security
Auckland University of Technology
2016-2025
University of California, Los Angeles
2023
Antea Group (France)
2023
Institute of Electrical and Electronics Engineers
2021-2023
Glasgow Royal Infirmary
2023
Beatson West of Scotland Cancer Centre
2023
Foshan University
2023
Delft University of Technology
2020-2023
Gartnavel General Hospital
2021
Canadian Standards Association
2020-2021
Clustering is an important research topic for mobile ad hoc networks (MANETs) because clustering makes it possible to guarantee basic levels of system performance, such as throughput and delay, in the presence both mobility a large number terminals. A variety approaches have been presented, whereby different typically focus on performance metrics. This article presents comprehensive survey recently proposed algorithms, which we classify based their objectives. provides descriptions...
Two-photon photodynamic therapy (PDT) is able to offer precise 3D manipulation of treatment volumes, providing a target level that unattainable with current therapeutic techniques. The advancement this technique greatly hampered by the availability photosensitizers large two-photon absorption (TPA) cross section, high reactive-oxygen-species (ROS) generation efficiency, and bright fluorescence. Here, an effective photosensitizer aggregation-induced emission (AIE) characteristics synthesized,...
Device-to-device (D2D) communication enables direct between proximate devices thereby improving the overall spectrum utilization and offloading traffic from cellular networks. This paper develops a new spatial model for D2D networks in which device locations are modeled as Poisson cluster process. Using this model, we study performance of typical receiver terms coverage probability under two realistic content availability setups: (i) interest is available at chosen uniformly random same...
Metasurfaces enable flat optical components with predesigned functionalities, including the polarization conversion using subwavelength elements. However, switching between different functionalities of metasurface‐based is extremely difficult because elements have to be finely addressed change spatial phase gradient for desired functionality. Here, it demonstrated, first time, a broadband wide‐angle multifunctional converter via galinstan‐based metasurface each element array actively...
Metasurface absorbing material, which obtains near‐unity electromagnetic absorption through subwavelength artificial structure, plays an important role in the area of stealth and shielding technology, biological imaging, etc. However, they usually suffer from narrow bandwidth only work on planar surfaces. Here, for first time, this study demonstrates a soft water‐resonator‐based metasurface, functions as active material across ultrabroadband range Ku, K, Ka bands. Distinct conventional...
Interference field in wireless networks is often modeled by a homogeneous Poisson point process (PPP). While it realistic modeling the inherent node irregularity and provides meaningful first-order results, falls short effect of interference management techniques, which typically introduces some form spatial interaction among active transmitters. In applications, such as cognitive radio device-to-device networks, this may result formation holes an otherwise field. The resulting can be...
This paper develops a comprehensive analytical framework with foundations in stochastic geometry to characterize the performance of cluster-centric content placement cache-enabled device-to-device (D2D) network. Different from device-centric placement, focuses on placing each cluster, such that collective all devices cluster is optimized. Modeling locations by Poisson process, we define and analyze for three general cases: 1) k-Tx case: receiver interest chosen uniformly at random its...
Recent advances in wireless technologies, micro-electro-mechanical systems, and embedded systems enable the popular usage of Internet Things (IoT) sensor networks (WSNs) many important applications, such as smart buildings, security, target tracking, industrial automation, so on. Typically, a WSN consists large number tiny, low-cost nodes that are limited terms their capabilities computation, communication, memory, power. In WSNs, energy-efficient algorithms paramount importance for long...
Routing plays an important role in the overall architecture of Internet Things. IETF has standardized RPL routing protocol to provide interoperability for low-power and lossy networks (LLNs). LLNs cover a wide scope applications, such as building automation, industrial control, healthcare, so on. applications require reliable energy-efficient support. Point-to-point (P2P) communication is fundamental requirement many applications. However, traditional protocols usually propagate throughout...
How to achieve reliable routing has always been a major issue in the design of communication networks, among which mobile ad hoc networks (MANETs) possess most adversarial networking environment due absence fixed infrastructure, nature open transmission media and dynamic network topology. These characteristics also make protocols MANETs become even more challenging. In this paper, we propose an evolutionary self-cooperative trust (ESCT) scheme that imitates human cognitive process relies on...
The Coronavirus pandemic has created complex challenges and adverse circumstances. This research identifies public sentiment amidst problematic socioeconomic consequences of the lockdown, explores ensuing four potential associated scenarios. severity brutality COVID-19 have led to development extreme feelings, emotional mental healthcare challenges. focuses on - presence fear, confusion volatile sentiments, mixed along with trust anticipation. It is necessary gauge dominant trends for...
The dynamic nature of vehicular networks imposes a lot challenges in multihop data transmission as links are vulnerable their existence due to associated mobility vehicles. Thus, packets frequently find it difficult get through the destination limited lifetimes links. conventional broadcasting based ad-hoc network (VANET) routing protocols struggle accurately analyze link dynamicity unavailability global information and inefficiencies route discovering schemes. However, with recently emerged...
Recently, location-based routings in wireless sensor networks (WSNs) are attracting a lot of interest the research community, especially because its scalability. In routing, network size is scalable without increasing signalling overhead as routing decisions inherently localized. Here, each node aware position through some positioning device like GPS and uses this information mechanism. paper, we first discuss basics WSNs including architecture network, energy consumption for components...
Abstract The metasurface concept is employed to planarize retroflectors by stacking two metasurfaces with separation that orders larger than the wavelength. Here, a retroreflective using subwavelength‐thick reconfigurable C‐shaped resonators (RCRs) reported, which reduces overall thickness from previous record of 590 λ 0 down only 0.2 . geometry RCRs could be in situ controlled realize equal amplitude and phase modulation onto transverse magnetic (TM)‐polarized electric (TE)‐polarized...
An autonomous V2V communication mode (also known as side-link 4), which facilitates in out of eNB coverage areas, has recently been introduced into the Long term evolution (LTE) standard. Recent research studied performance this LTE-V2V for a highway use case. However, analysis case cannot be easily applied to an intersection it may contain non-line-of-sight (NLOS) links. In paper, we analyze and evaluate safety message broadcasting urban scenario. Considering practical path loss models,...
Abstract A single metasurface is demonstrated with powerful manipulating capability to arbitrarily and independently tune the phase profiles of orthogonal polarization states using subwavelength tunable cross‐shaped element (TCE) arrays. Here, arbitrary control must be distinguished from semiarbitrary multiple predesigned metasurfaces one‐to‐one functionality. The decoupled tuning for bestows additional degree freedom manipulate electromagnetic wave multifunctionality. As a proof concept,...