تصفح Electrical Engineering حسب المؤلف "Hasna, Mazen O."
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Opportunistic spectrum sharing in relay-assisted cognitive systems with imperfect CSI
Hamdi, Karama; Hasna, Mazen O.; Ghrayeb, Ali; Letaief, Khaled Ben ( IEEE , 2014 , Article)In this paper, we consider spectrum sharing between cognitive radio (CR) users and a licensed primary user (PU) to enhance the spectrum efficiency. In the considered scenario, the PU is not able to successfully transmit ... -
Optimization of base stations density for hybrid energy based 3-D wireless networks
Omri, Aymen; Hasna, Mazen O. ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Hybrid energy supply (HES) based wireless communication systems have recently emerged as a new paradigm to enable green networks, which are powered by both the traditional and harvested energies. In this paper, we propose ... -
Optimization of effective area spectral efficiency for wireless communications systems under Nakagami-m fading channels
Omri, Aymen; Hasna, Mazen O. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In this paper, we present an optimization of the effective area spectral efficiency (EASE) metric for point-to-point transmission systems, and decode-and-forward (DF) relaying communications networks under Nakagami-m fading ... -
Performance analysis of full-duplex multiuser decode-And-forward relay networks with interference management
Omri, Aymen; Behbahani, Alireza S.; Eltawil, Ahmed M.; Hasna, Mazen O. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In this paper, a cooperative communications scheme with interference management is proposed for Full-Duplex (FD) multi-user, decode-And-forward (DF) relay networks. The scheme is based on a relay selection method that ... -
Performance analysis of secure AF relay networks using cooperative jamming under outdated CSI
Mabrouk, Asma; Tourki, Kamel; Hasna, Mazen O.; Hamdi, Noureddine ( Institution of Engineering and Technology , 2017 , Article)This paper studies cooperative transmission for securing a two-hop network where the eavesdropper can wiretap the relay channels. With outdated channel state information (CSI), we propose an opportunistic relaying with ... -
Performance analysis of wireless sensor transmission with RF energy harvesting
Chamkhia, Hela; Hasna, Mazen O. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)For wireless devices, which are commonly powered using batteries, energy becomes a severe bottleneck. Many efforts have been spent on the efficient use of battery energy. Recently, an alternative has been explored for ... -
Performance enhancement of cognitive relay networks using regression functions
Tourki, Kamel; Hasna, Mazen O. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In a spectrum sharing relay-aided secondary network, the design objective shifts from minimizing the violation of the primary system constraints when using the outdated channel state information (CSI), to making the best ... -
Proactive spectrum sharing incentive for physical layer security enhancement using outdated CSI
Tourki, Kamel; Hasna, Mazen O. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)We investigate the spectrum sharing possibility as an incentive to enhancing the physical layer security. The concept behind this is that a legitimate source-destination pair, communicating in the presence of a passive ... -
Sub-channels selection schemes with interference management for underlay cognitive networks
Chamkhia, Hela; Hasna, Mazen O. ( IEEE , 2013 , Conference Paper)Cognitive Radio is a promising concept that offers solution to spectral crowding problem by introducing opportunistic usage of the unoccupied licensed frequency bands. Improving the network capacity and reliability of the ... -
The role of engineering design in technological and 21st century competencies capacity building: Comparative case study in the Middle East, Asia, and Europe
Abdulwahed, Mahmoud; Hasna, Mazen O. ( MDPI AG , 2017 , Article)Engineering design is considered an effective means for developing engineering technical skills. Normally, engineering design is conducted in teams and is a collaborative open-ended approach under constraints. This nature ... -
Unified Performance Analysis for Multiuser Mixed η - μ and M - Distribution Dual-Hop RF/FSO Systems
Yang, Liang; Hasna, Mazen O.; Ansari, Imran Shafique ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)A mixed free-space optical (FSO) communication scheme is considered with the help of a fixed gain relay. We assume that the links from the source to the relay are radio frequency links with multiuser diversity operating ...