Browsing by Author "Khattab, Tamer"
Now showing items 101-120 of 126
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Secure multiple-users transmission using multi-path directional modulation
Hafez, Mohammed; Khattab, Tamer; Elfouly, Tarek; Arslan, Huseyin ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)This work introduces a physical-layer secure multiple-users communication scheme. Our scheme employs the multi-path nature of the wireless channel to provide a different secure communication link for each of the legitimate ... -
Secure robust collaborative spectrum sensing in the presence of smart attackers
Pourgharehkhan, Zahra; Taherpour, Abbas; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In this paper, collaborative spectrum sensing to detect random signals corrupted by Gaussian noise in the presence of smart attackers is studied. Unlike to the most of related works, we consider a blind attacker detection ... -
Secure Spatial Multiple Access Using Directional Modulation
Hafez, Mohammed; Yusuf, Marwan; Khattab, Tamer; Elfouly, Tarek; Arslan, Hüseyin ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)In this paper, we introduce a secure multiple access scheme, which exploits the multipath structure of the channel to create a multi-user interference environment. The generated interference enables legitimate users to ... -
Secure Transmission of IoT mHealth Patient Monitoring Data from Remote Areas Using DTN
Yaacoub, Elias; Abualsaud, Khalid; Khattab, Tamer; Chehab, Ali ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)In remote rural areas without continuous Internet connectivity, it is hard to envisage the use of mHealth applications for remote patient monitoring. In such areas, patients need to travel long distances to reach the nearest ... -
Self-interference cancellation using time-domain phase noise estimation in OFDM full-duplex systems
Shehata, Heba; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)In full-duplex systems, the local oscillator phase noise (PN) problem is one of the bottleneck challenges that may face the self-interference cancellation (SIC) stage especially when orthogonal frequency division multiplexing ... -
SFET-based multiple antenna spectrum sensing using the second order moments of eigenvalues
Sedighi, Saeid; Taherpour, Abbas; Gazor, Saeed; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, we propose a new detector for multiantenna spectrum sensing in cognitive radios (CR) by exploiting the Separating Function Estimation Test (SFET) framework. Specifically, we consider a blind scenario for ... -
Smart System to Monitor Social-Distancing During the Covid-19 Pandemic
Elharrouss, Omar; Al-Maadeed, Noor; Abualsaud, Khalid; Mahmoud, Amr; Khattab, Tamer; Al-Maadeed, Somaya; Al-Ali, Ali... more authors ... less authors ( Qatar University Press , 2020 , Poster)We introduce a smart system to track and maintain real-time physical distance between people and to warn people to any deviation from the prescribed distances. Social-distancing is an effective way of slowing infectious ... -
Spectrum-aggregating cognitive multi-antenna user with multiple primary users
El Shafie, Ahmed; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)We investigate a cognitive radio scenario involving a single cognitive transmitter equipped with K antennas sharing the spectrum with M primary users (PUs) transmitting over orthogonal bands. Each terminal has a queue to ... -
Statistical analysis of electromagnetic field inside a jet engine using the reverberation chamber approach
Abdelaziz, Aya Fekry; Trinchero, Daniele; Khattab, Tamer ( Electromagnetics Academy , 2012 , Article)In this paper, the electromagnetic field distribution inside a jet engine is studied through full wave analysis. Results are statistically analyzed by comparisons to the models used for the reverberation chamber with a ... -
Swinging with the Jet Set: Analysis of Electromagnetic Fields Inside Jet Engines - From Numerical and Experimental Analysis to Statistical Analysis
Krishna, Aparna; Khattab, Tamer; Abdelaziz, Aya F.; Guizani, Mohsen ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Analyzing electromagnetic propagation inside jet engine turbines is a challenging and important research topic due to its potential applications in both civil and military fields. Electromagnetic modeling of such complex ... -
A Testbed for Implementing Lightweight Physical Layer Security in an IoT-based Health Monitoring System
Hussain, Ahmed Mohamed; Abualsaud, Khalid; Yaacoub, Elias; Khattab, Tamer; Gehani, Abdurrazzak; Guizani, Mohsen... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Conference Paper)Telemedicine is a technique that allows patients to have health-related consultations without the need to be physically present in the hospital through phone and video calling technologies. In recent years, researchers ... -
The effect of additional statistical side information on multiple antenna spectrum sensing
Tabesh, Amirhossein; Taherpour, Abbas; Khattab, Tamer (2012 , Conference Paper)In this paper, we consider the problem of multiple antenna spectrum sensing in Cognitive Radios (CR) when some or all parameters are unknown. The Generalized Likelihood Ratio (GLR) test is the convectional method to solve ... -
The effect of transmitter's eavesdropper CSI on the secure degrees of freedom of the MIMO MAC
Amir, Mohamed; Khattab,Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)We investigate the secure degrees of freedom (SDoF) of the two-transmitter multiple access channel (MAC) with multiple antennas transmitters and multiple antennas legitimate receiver in the vicinity of an eavesdropper that ... -
The Role of 5G/6G Networks in Building Sustainable and Energy-Efficient Smart Cities
Shehab, Muhammad; Khattab, Tamer; Kucukvar, Murat; Trinchero, Daniele ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)Future wireless networks aim to provide high-energy efficiency, high spectral efficiency, low cost, and support a massive number of connected devices in prospect the evolution of Internet of Things (IoT) and smart cities. ... -
The Secure Degrees of Freedom of the MIMO BC and MIMO MAC with Multiple Unknown Eavesdroppers
Khalil, Mohamed; Khattab, Tamer; Elfouly, Tarek; Mohamed, Amr ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)We investigate the secure degrees of freedom (SDoF) of a two-transmitter Gaussian multiple access channel with multiple antennas at the transmitters, a legitimate receiver and an unknown number of eavesdroppers each with ... -
Theoretical accuracy analysis of indoor visible light communication positioning system based on time-of-arrival
Amini, Changeez; Taherpour, Abbas; Khattab, Tamer; Gazor, Saeed ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In this paper, an improved channel model and estimation for positioning in indoor environments using the visible light is presented. For positioning, the specific propagation and indoor channel model for visible light is ... -
Throughput maximization via adjusting packet size of a buffered cognitive radio user
El Shafie, Ahmed; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)In this paper, we investigate a cognitive scenario with one secondary user and one primary user. Users are assumed to be buffered terminals. Each user has certain arrival rate with certain packet size. We propose a scheme ... -
Throughput of a cooperative energy harvesting secondary user in cognitive radio networks
El Shafie, Ahmed; Khattab, Tamer ( Wiley Blackwell , 2016 , Article)This paper investigates the maximum throughput of a rechargeable secondary user (SU) sharing the spectrum with a primary user (PU). The SU is assumed to be an energy harvesting node, which harvests energy packets from the ... -
Time-frequency compressed spectrum sensing in cognitive radios
Monfared, Shaghayegh S.M.; Taherpour, Abbas; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2013 , Conference Paper)In this paper, we investigate the use of time-frequency analysis for improvement of spectrum sensing in cognitive radios and exploit compressed sensing (sampling) to reduce the extremely high sampling rate of signal in ... -
Towards Information Theoretic Interpretation of Practical Ciphers
Abdellatif, Basem; Elfouly, Tarek; Abualsaud, Khalid; Gouissem, Ala; Yaacoub, Elias; Khattab, Tamer... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Conference Paper)In spite of the wide spread of practical crypto- systems and ciphers nowadays, they still lack a unique metric to measure the secrecy level they provide. Their strength is measured in an ad-hoc way by exposing them to ...