Nawaf Othman - Academia.edu (original) (raw)

Papers by Nawaf Othman

Research paper thumbnail of Multi-Agent Reinforcement Learning Aided Resource Allocation With SARSA in UAV Networks

Research paper thumbnail of Unmanned aerial vehicles (UAVs): practical aspects, applications, open challenges, security issues, and future trends

Intelligent Service Robotics

Recently, unmanned aerial vehicles (UAVs) or drones have emerged as a ubiquitous and integral par... more Recently, unmanned aerial vehicles (UAVs) or drones have emerged as a ubiquitous and integral part of our society. They appear in great diversity in a multiplicity of applications for economic, commercial, leisure, military and academic purposes. The drone industry has seen a sharp uptake in the last decade as a model to manufacture and deliver convergence, offering synergy by incorporating multiple technologies. It is due to technological trends and rapid advancements in control, miniaturization, and computerization, which culminate in secure, lightweight, robust, more-accessible and cost-efficient UAVs. UAVs support implicit particularities including access to disaster-stricken zones, swift mobility, airborne missions and payload features. Despite these appealing benefits, UAVs face limitations in operability due to several critical concerns in terms of flight autonomy, path planning, battery endurance, flight time and limited payload carrying capability, as intuitively it is not recommended to load heavy objects such as batteries. As a result, the primary goal of this research is to provide insights into the potentials of UAVs, as well as their characteristics and functionality issues. This study provides a comprehensive review of UAVs, types, swarms, classifications, charging methods and regulations. Moreover, application scenarios, potential challenges and security issues are also examined. Finally, future research directions are identified to further hone the research work. We believe these insights will serve as guidelines and motivations for relevant researchers.

Research paper thumbnail of A Comprehensive Review of Micro UAV Charging Techniques

Micromachines

The groundbreaking Unmanned Aerial Vehicles (UAVs) technology has gained significant attention fr... more The groundbreaking Unmanned Aerial Vehicles (UAVs) technology has gained significant attention from both academia and industrial experts due to several applications, such as military missions, power lines inspection, precision agriculture, remote sensing, delivery services, traffic monitoring and many more. UAVs are expected to become a mainstream delivery element by 2040 to address the ever-increasing demand for delivery services. Similarly, UAV-assisted monitoring approaches will automate the inspection process, lowering mission costs, increasing access to remote locations and saving time and energy. Despite the fact that unmanned aerial vehicles (UAVs) are gaining popularity in both military and civilian applications, they have a number of limitations and critical problems that must be addressed in order for missions to be effective. One of the most difficult and time-consuming tasks is charging UAVs. UAVs’ mission length and travel distance are constrained by their low battery e...

Research paper thumbnail of A vision of 6G: technology trends, potential applications, challenges and future roadmap

International Journal of Computer Applications in Technology, 2021

Research paper thumbnail of Towards the internet of underwater things: a comprehensive survey

Earth Science Informatics, 2022

Research paper thumbnail of Cassegrain Antenna Design, Fabrication, and Testing for Passive Millimeter Wave Imaging

2021 Photonics & Electromagnetics Research Symposium (PIERS), 2021

The aim of our study was to describe the design and characterization of a Cassegrain antenna for ... more The aim of our study was to describe the design and characterization of a Cassegrain antenna for Millimeter Wave (MMW) Imaging purposes. The software design and hardware fabrication model of Ka band Cassegrain Antenna operating at 35 GHz center frequency is provided, with a high gain of 42.7 dBi and narrow beamwidth of 0.3°. In our view, one promising application of these achieved results is imaging. This present study highlights some generic formulas and techniques used to measure antenna pattern and parameters. Simulation results were analyzed in Computer Simulation Technology (CST) Microwave Studio software. Simulation results and hardware testing results by Pakistan Space and Upper Atmosphere Research Commission (SUPARCO) are discussed in this paper.

Research paper thumbnail of 6G: Envisioning the Key Technologies, Applications and Challenges

International Journal of Advanced Computer Science and Applications, 2020

In 2030, 6G is going to bring remarkable revolution in communication technologies as it will enab... more In 2030, 6G is going to bring remarkable revolution in communication technologies as it will enable Internet of Everything. Still many countries are working over 5G and B5G has yet to be developed, while some research groups have already initiated projects on 6G. 6G will provide high and sophisticated QoS e.g. virtual reality and holographic communication. At this stage, it is impossible to speculate every detail of 6G and which key technologies will mark 6G. The wide applications of ICT, such as IoT, AI, blockchain technology, XR (Extended Reality) and VR (Virtual Reality), has created the emergence of 6G technology. On the basis of 5G technique, 6G will put profound impact over ubiquitous connectivity, holographic connectivity, deep connectivity and intelligent connectivity. Notably, research fraternity should focus on challenges and issues of 6G. They need to explore various alternatives to meet desired parameters of 6G. Thus, there are many potential challenges to be envisioned. This review study outlines some future challenges and issues which can hamper deployment of 6G. We subsequently define key potential features of 6G to provide the state of the art of 6G technology for future research. We have provided a review of extant research on 6G. In this review, technology prospects, challenges, key areas and related issues are briefly discussed. In addition, we have provided technologies breakdown and framework of 6G. We have shed light over future directions, applications and practical considerations of 6G to help researchers for possible breakthroughs. Our aim is to aggregate the efforts and eliminate the technical uncertainties towards breakthrough innovations for 6G.

Research paper thumbnail of Investigation and Design of Laser Diode based Diver-to-Diver Optical Communication System

2020 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO), 2020

Divers need proper communication techniques as sound waves cannot propagate through water. Resear... more Divers need proper communication techniques as sound waves cannot propagate through water. Research fraternity has designed several underwater communication systems to overcome this intriguing factor of communication. Researchers have opted several approaches for audio signal communication through water. Designed communication systems vary in complex circuitry, audio signal quality, system components and cost. In this present study, we seek to experimentally demonstrate the feasibility of laser diodes and solar cell receiver for audio signal transmission through water. Audio signals were transmitted through water by imposing over blue, green and red LDs. We have examined light scattering and our findings validate laser diode with shorter wavelength gives less scattering. This paper also outlines an approach for out-of-sight communication. In our experimental trials, the maximum propagation distance is 62 cm by using 450 nm blue laser diode. This study also includes discussion of collimating lens effect on audio signal transmission.

Research paper thumbnail of Multi-Agent Reinforcement Learning Aided Resource Allocation With SARSA in UAV Networks

Research paper thumbnail of Unmanned aerial vehicles (UAVs): practical aspects, applications, open challenges, security issues, and future trends

Intelligent Service Robotics

Recently, unmanned aerial vehicles (UAVs) or drones have emerged as a ubiquitous and integral par... more Recently, unmanned aerial vehicles (UAVs) or drones have emerged as a ubiquitous and integral part of our society. They appear in great diversity in a multiplicity of applications for economic, commercial, leisure, military and academic purposes. The drone industry has seen a sharp uptake in the last decade as a model to manufacture and deliver convergence, offering synergy by incorporating multiple technologies. It is due to technological trends and rapid advancements in control, miniaturization, and computerization, which culminate in secure, lightweight, robust, more-accessible and cost-efficient UAVs. UAVs support implicit particularities including access to disaster-stricken zones, swift mobility, airborne missions and payload features. Despite these appealing benefits, UAVs face limitations in operability due to several critical concerns in terms of flight autonomy, path planning, battery endurance, flight time and limited payload carrying capability, as intuitively it is not recommended to load heavy objects such as batteries. As a result, the primary goal of this research is to provide insights into the potentials of UAVs, as well as their characteristics and functionality issues. This study provides a comprehensive review of UAVs, types, swarms, classifications, charging methods and regulations. Moreover, application scenarios, potential challenges and security issues are also examined. Finally, future research directions are identified to further hone the research work. We believe these insights will serve as guidelines and motivations for relevant researchers.

Research paper thumbnail of A Comprehensive Review of Micro UAV Charging Techniques

Micromachines

The groundbreaking Unmanned Aerial Vehicles (UAVs) technology has gained significant attention fr... more The groundbreaking Unmanned Aerial Vehicles (UAVs) technology has gained significant attention from both academia and industrial experts due to several applications, such as military missions, power lines inspection, precision agriculture, remote sensing, delivery services, traffic monitoring and many more. UAVs are expected to become a mainstream delivery element by 2040 to address the ever-increasing demand for delivery services. Similarly, UAV-assisted monitoring approaches will automate the inspection process, lowering mission costs, increasing access to remote locations and saving time and energy. Despite the fact that unmanned aerial vehicles (UAVs) are gaining popularity in both military and civilian applications, they have a number of limitations and critical problems that must be addressed in order for missions to be effective. One of the most difficult and time-consuming tasks is charging UAVs. UAVs’ mission length and travel distance are constrained by their low battery e...

Research paper thumbnail of A vision of 6G: technology trends, potential applications, challenges and future roadmap

International Journal of Computer Applications in Technology, 2021

Research paper thumbnail of Towards the internet of underwater things: a comprehensive survey

Earth Science Informatics, 2022

Research paper thumbnail of Cassegrain Antenna Design, Fabrication, and Testing for Passive Millimeter Wave Imaging

2021 Photonics & Electromagnetics Research Symposium (PIERS), 2021

The aim of our study was to describe the design and characterization of a Cassegrain antenna for ... more The aim of our study was to describe the design and characterization of a Cassegrain antenna for Millimeter Wave (MMW) Imaging purposes. The software design and hardware fabrication model of Ka band Cassegrain Antenna operating at 35 GHz center frequency is provided, with a high gain of 42.7 dBi and narrow beamwidth of 0.3°. In our view, one promising application of these achieved results is imaging. This present study highlights some generic formulas and techniques used to measure antenna pattern and parameters. Simulation results were analyzed in Computer Simulation Technology (CST) Microwave Studio software. Simulation results and hardware testing results by Pakistan Space and Upper Atmosphere Research Commission (SUPARCO) are discussed in this paper.

Research paper thumbnail of 6G: Envisioning the Key Technologies, Applications and Challenges

International Journal of Advanced Computer Science and Applications, 2020

In 2030, 6G is going to bring remarkable revolution in communication technologies as it will enab... more In 2030, 6G is going to bring remarkable revolution in communication technologies as it will enable Internet of Everything. Still many countries are working over 5G and B5G has yet to be developed, while some research groups have already initiated projects on 6G. 6G will provide high and sophisticated QoS e.g. virtual reality and holographic communication. At this stage, it is impossible to speculate every detail of 6G and which key technologies will mark 6G. The wide applications of ICT, such as IoT, AI, blockchain technology, XR (Extended Reality) and VR (Virtual Reality), has created the emergence of 6G technology. On the basis of 5G technique, 6G will put profound impact over ubiquitous connectivity, holographic connectivity, deep connectivity and intelligent connectivity. Notably, research fraternity should focus on challenges and issues of 6G. They need to explore various alternatives to meet desired parameters of 6G. Thus, there are many potential challenges to be envisioned. This review study outlines some future challenges and issues which can hamper deployment of 6G. We subsequently define key potential features of 6G to provide the state of the art of 6G technology for future research. We have provided a review of extant research on 6G. In this review, technology prospects, challenges, key areas and related issues are briefly discussed. In addition, we have provided technologies breakdown and framework of 6G. We have shed light over future directions, applications and practical considerations of 6G to help researchers for possible breakthroughs. Our aim is to aggregate the efforts and eliminate the technical uncertainties towards breakthrough innovations for 6G.

Research paper thumbnail of Investigation and Design of Laser Diode based Diver-to-Diver Optical Communication System

2020 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO), 2020

Divers need proper communication techniques as sound waves cannot propagate through water. Resear... more Divers need proper communication techniques as sound waves cannot propagate through water. Research fraternity has designed several underwater communication systems to overcome this intriguing factor of communication. Researchers have opted several approaches for audio signal communication through water. Designed communication systems vary in complex circuitry, audio signal quality, system components and cost. In this present study, we seek to experimentally demonstrate the feasibility of laser diodes and solar cell receiver for audio signal transmission through water. Audio signals were transmitted through water by imposing over blue, green and red LDs. We have examined light scattering and our findings validate laser diode with shorter wavelength gives less scattering. This paper also outlines an approach for out-of-sight communication. In our experimental trials, the maximum propagation distance is 62 cm by using 450 nm blue laser diode. This study also includes discussion of collimating lens effect on audio signal transmission.