Browsing by Author "Hasna, M.O."
Now showing items 1-20 of 32
-
3-D Placement Schemes of Multiple UAVs in NFP-based Wireless Networks
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)In this paper, we propose two placement strategies of multiple unmanned aerial vehicles (UAVs) in network flying platform (NFP)-based wireless networks. The first strategy is based on a proposed distributed placement ... -
A Comparative Secrecy Study of Flying and Ground Eavesdropping in UAV Based Communication Systems
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)In this paper, we study the strictly positive secrecy outage probability (SOP) and the ergodic secrecy capacity of a wiretap unmanned aerial vehicle (UAV) system where a UAV transmitter (Alice) is trying to send a message ... -
A Distance-Based Mode Selection Scheme for D2D-Enabled Networks with Mobility
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)In this paper, a new mode selection scheme for device-to-device (D2D)-enabled cellular communications with mobility is proposed and evaluated. The new scheme is based on an average threshold D2D distance between two given ... -
Alternative method of diffraction-enhanced imaging
( Elsevier B.V. , 2007 , Article)Diffraction-enhanced imaging (DEI) is a radiographic technique that derives contrast from an object's X-ray absorption, refraction gradient and small-angle scatter properties (extinction). The DEI imaging system prepares ... -
An efficient algorithm for dense network flow maximization with multihop backhauling and NFPs
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)Network densification is promising to achieve higher data rates and higher network capacity, while causing new backhauling challenges especially when the network is highly dense. The flexible and cost efficient backhauling ... -
Association of networked flying platforms with small cells for network centric 5G+ C-RAN
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference)5G+ systems expect enhancement in data rate and coverage area under limited power constraint. Such requirements can be fulfilled by the densification of small cells (SCs). However, a major challenge is the management of ... -
Average Secrecy Outage Rate and Average Secrecy Outage Duration of Wireless Communication Systems with Diversity over Nakagami-m Fading Channels
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)This paper presents an analytical methodology for the evaluation of two important physical layer security metrics in wiretap channels. Specifically, we first introduce the concept and the expression of average secrecy ... -
Bidirectional Optical Spatial Modulation for Mobile Users: Toward a Practical Design for LiFi Systems
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)Among the challenges of realizing the full potential of light-fidelity (LiFi) cellular networks are user mobility, random device orientation, and blockage. In this paper, we study the impact of those challenges on the ... -
Comparison of relaying strategies for cooperative diversity systems with adaptive modulation
( IEEE , 2009 , Conference)In this paper, we propose several relay selection schemes for cooperative diversity systems with adaptive transmission. The proposed schemes are based on dual-hop relaying with multiple relays. We analyze the performance ... -
Contextual Preparation of Future Engineers: A non-Western Perspective
( IEEE , 2008 , Conference)The advent of technological communication and modern travel has increased the likelihood that graduates from engineering programs will work in environments containing integrated cultures, customs, and languages. One may ... -
Controlling Error Propagation in Network-Coded Cooperative Wireless Systems
( IEEE , 2009 , Article)In cooperative communications, error propagation at relays degrades the diversity order of the system. To combat that effect, it has been suggested to implement a reliability threshold at the relay to control error ... -
Distributed turbo coding using log-likelihood thresholding for cooperative communications
( IEEE , 2009 , Article)In cooperative communications, error propagation at relays reduces the diversity order of the system. To combat that effect, we present a novel technique to control error propagation at the relays, which is presented in ... -
Effects of Post and Early Selection on SEC Based Transmit Diversity Systems with Linear Power Loading
( IEEE , 2008 , Conference)Switch and examine combing (SEC) diversity scheme provides a lowest-complexity closed-loop transmit diversity solution. Furthermore, by probing sequentially available branches with different power loading levels, the SEC ... -
End-to-end outage probability of multihop transmission over lognormal shadowed channels
( King Fahd University of Petroleum & Minerals , 2003 , Article)End-to-end outage probability evaluation of multihop wireless communication systems over lognormal shadowed channels is presented. Closed-form expression for the end-to-end signal to noise ratio of systems equipped with ... -
Energy Harvesting Schemes for UAV based Communications
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)This paper presents two generic charging and transmission schemes to find the trade-off between the altitude of an Unmanned aerial vehicle (UAV) base station and the acquired harvested energy for maximum coverage area. The ... -
HARQ Performance over FSO Channels with Atmospheric Fading and Pointing Errors
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference)Free space optical communications (FSO) have witnessed a growing interest in the last few decades due to its various advantages. However, this technology suffers from its sensitivity to the atmospheric conditions such as ... -
ICIC-Enabled Association and Channel Selection for UAV-BSS Based on User Locations and Demands
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)In this work, the downlink association problem is studied when inter-cell interference coordination (ICIC) is enabled at the network side. The serving base stations (BSs) are mounted over unmanned aerial vehicles (UAVs), ... -
Latency Analysis of UAV based Communication Networks
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference)UAV based communication is gaining more and more interest in both research and industry. On top of all benefits gained by using UAVs, we investigate in this paper the effect of using UAV communication on the user experienced ... -
Maximizing Dense Network Flow through Wireless Multihop Backhauling using UAVs
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference)UAV enabled communications promise to provide solutions for many challenges raised by the emerging and future 5G+ networks, especially the ones related to backhauling a network of ultra dense small cells (SC), while ... -
On network flow maximization via multihop backhauling and UAVs: An integer programming approach
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference)Although small cells (SC) densification approach plays a prominent role in achieving the data rate and coverage requirements in 5G networks, it poses serious challenges concerning the flexible and cost efficient backhauling ...