Electrical Engineering: المرسلات الحديثة

السجلات المعروضة 921 -- 940 من 2649

    • Interference cancellation through interference alignment for downlink of cognitive cellular networks 

      Moussa, M.; Foukalas, F.; Khattab, T. ( Institution of Engineering and Technology , 2015 , Article)
      Interference cancellation through interference alignment (IA) at the downlink of cognitive cellular networks is proposed. IA helps the spatial resources to be shared among primary and secondary cells, and thus it can provide ...

    • Lifetime maximization for greedy selective relay strategies 

      Mousavifar, S.A.; Leung, C.; Khattab, T. (2009 , Conference Paper)
      In this paper we propose a new algorithm for selective relay strategies with Amplify-and-Forward (AF) relays which improves the relay network lifetime. The lifetime of the relay network is defined as the maximum number of ...

    • Hybrid Physical Layer Security for Passive RFID Communication 

      Gouissem, A.; Abualsaud, K.; Yaacoub, E.; Khattab, T.; Guizani, M. ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)
      Thanks to its low cost, small weight and energy efficiency, passive radio frequency identification (RFID) backscatter communications systems have attracted a lot of attention in several application fields. However, such ...

    • Generative Adversarial Network Approach to Future Sermonizing of Housing Dispersal in Emerging Cities 

      Ibrahim, Hatem; Khattab, Ziad; Khattab, Tamer; Abraham, Revina ( American Society of Civil Engineers (ASCE) , 2022 , Article)
      This study aims to visualize the future housing dispersal of expatriates, based on the predicted urban growth in emerging cities. Generalized adversarial networks (GANs) will be utilized to predict the future urban growth ...

    • Energy Efficient Spectrum Allocation and Mode Selection for D2D Communications in Heterogeneous Networks 

      Galanopoulos, Apostolos; Foukalas, Fotis; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)
      In this paper, we consider a heterogeneous network consisting of both macro Base Station (MBS) and pico Base Stations (PBSs) in order to provide a spectrum allocation and mode selection in device-to-device (D2D) communications. ...

    • Distributed power control for carrier aggregation in cognitive heterogeneous 5G cellular networks 

      Foukalas, Fotis; Khattab, Tamer ( Springer Verlag , 2015 , Conference Paper)
      In this paper, we study the distributed optimal power allocation for the carrier aggregation in next generation (5G) cognitive radio networks. The presented study relies on the power control and carrier aggregation principles ...

    • Efficient collaborative spectrum sensing under the smart primary user emulation attacker network 

      Pourgharehkhan, Zahra; Taherpour, Abbas; Khattab, Tamer; Hamila, Ridha ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)
      In this paper, collaborative spectrum sensing to detect random signals corrupted by Gaussian noise in the presence of Primary User Emulation Attackers (PUEAs) is studied. We consider smart PUEAs which aims at increasing ...

    • Distributed spectrum sensing of correlated observations in cognitive radio networks 

      Sedighi, Saeid; Pourgharehkhan, Zahra; Taherpour, Abbas; Khattab, Tamer (2013 , Conference Paper)
      In this paper, Collaborative Spectrum Sensing (CSS) as one of the most efficient sensing approaches in Cognitive Radio Networks (CRNs) is investigated when the Secondary Users (SUs) observations are assumed to be correlated. ...

    • Directional Modulation for Secure RFID in Health Systems 

      Desouky, Gehad; Shehata, Heba; Khattab, Tamer; Abualsaud, Khalid; Guizani, Mohsen ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)
      Radio frequency identification (RFID) systems are gaining more attention in new frontiers of applications due to their simplicity, low size factor and low cost of deployment. One of the emerging frontiers of applications ...

    • Energy-aware joint power, packet and topology optimization by simulated annealing for WSNs 

      Xenakis, A.; Foukalas, F.; Stamoulis, G.; Khattab, T. (2013 , Conference Paper)
      Energy-aware connectivity in wireless sensor networks (WSNs) can increase their network lifetime. This can be achieved by optimizing the power control, a particular communication mechanism and the topology control. To this ...

    • Efficient FPGA-based implementation of a novel dual mode spectrum sensing technique 

      Badawy, Ahmed; Khattab, Tamer (2013 , Conference Paper)
      Cognitive radio networks require an efficient and reliable method of sensing the spectrum. In this paper, we introduce and implement a new dual mode spectrum sensing technique that is based on combining Quickest Detection ...

    • Exploiting spectrum sensing data for key management 

      Badawy, Ahmed; Elfouly, Tarek; Chiasserini, Carla-Fabiana; Khattab, Tamer; Trinchero, Daniele ( Elsevier B.V. , 2017 , Article)
      In cognitive radio networks, secondary users (SUs) communicate on unused spectrum slots in the frequency bands assigned to primary users (PUs). Like any other wireless communication system, cognitive radio networks are ...

    • Energy-efficient cooperative relaying protocol for full-duplex cognitive radio users and delay-aware primary users 

      El Shafie, Ahmed; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)
      This paper considers a network in which a primary user (PU) may cooperate with a cognitive radio (CR) user for transmission of its data packets. The PU is assumed to be a buffered terminal operating in a time-slotted ...

    • Energy-Efficient Proactive Scheduling Policies for Finite-Buffer Regular Service Guarantees 

      Abdellatif, Basem; Galal Khafagy, Mohammad; Chen, Nan; ElFouly, Tarek; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)
      In this work, we study the energy saving merits of proactive scheduling for downlink multimedia streaming towards a finite-buffer receiver under Rayleigh fading. Three different threshold-based proactive scheduling policies ...

    • Expatriates' Housing Dispersal Outlook in a Rapidly Developing Metropolis Based on Urban Growth Predicted Using a Machine Learning Algorithm 

      Ibrahim, Hatem; Khattab, Ziad; Khattab, Tamer; Abraham, Revina ( Routledge , 2021 , Article)
      Housing dispersal in emerging cities should be investigated as it occurs to achieve a better understanding of future housing dispersal. In this study, housing preferences are analyzed in Doha Metropolitan Area based on ...

    • Fractional low order cyclostationary-based spectrum sensing in cognitive radio networks 

      Hashemi, Hadi; Fard, Sina Mohammadi; Taherpour, Abbas; Khattab, Tamer ( Springer Verlag , 2015 , Conference Paper)
      In this paper, we study the problem of cyclostationary spectrum sensing in cognitive radio networks based on cyclic properties of linear modulations. For this purpose, we use fractional order of observations in cyclic ...

    • Finite-sample size multiple antennas spectrum sensing 

      Sedighi, Saeid; Taherpour, Abbas; Khattab, Tamer (2012 , Conference Paper)
      In this paper, we consider the problem of multiple antenna spectrum sensing in Cognitive Radios (CR) by exploiting the prior information about unknown parameters. Specifically, we consider a blind spectrum sensing problem ...

    • Centralized, Distributed, and Module-Integrated Electric Power System Schemes in CubeSats: Performance Assessment 

      Hussein, Bayan; Massoud, Ahmed M.; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Article)
      Pico-satellites, also called CubeSats, have gained significant attention in recent years because they offer a low-cost and low-power solution with low latency communication and high data rates compared to larger satellites. ...

    • DFT-Based Multi-Directions Directional Modulation 

      Hafez, Mohammed; Khattab, Tamer; Arslan, Hüseyin ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)
      In this letter, a physically secure multi-directions directional modulation scheme is proposed. The scheme provides an adaptive beam-width assignment, where each user is granted a different beam width based on its channel ...

    • Detection of temporally correlated primary user signal with multiple antennas 

      Hashemi, Hadi; Fard, Sina Mohammadi; Taherpour, Abbas; Sedighi, Saeid; Khattab, Tamer ( Springer Verlag , 2015 , Conference Paper)
      In this paper, we address the problem of multiple antenna spectrum sensing in cognitive radios (CRs) when the samples of the primary user (PU) signal as well as samples of noise are assumed to be temporally correlated. We ...