Browsing by Author "Hasna, Mazen O."
Now showing items 21-34 of 34
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Modelling and performance analysis of 3-D heterogeneous cellular networks
Omri, Aymen; Hasna, Mazen O. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Cellular networks are usually described by two-dimensional (2-D) models. These models are appropriate for rural or suburban areas but are not suitable for dense urban environments, where a large number of heterogeneous ... -
Multiple antenna cyclostationary-based detection of primary users with multiple cyclic frequency in Cognitive Radios
Sedighi, Saeid; Taherpour, Abbas; Khattab, Tamer; Hasna, Mazen O. ( IEEE , 2014 , Conference Paper)In this paper, we study the problem of multiple antenna spectrum sensing by using cyclostationary features of Primary Users (PUs) signals in Cognitive Radios (CRs). We consider the general case of multiple antenna sensing ... -
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 ... -
Wireless transmission with cooperation on demand for slow and fast fading environments
Tourki, Kamel; Alouini, Mohamed S.; Hasna, Mazen O. ( IEEE , 2008 , Conference Paper)Mobile users with single antennas can still take advantage of spatial diversity through repetition based cooperative transmission. In this paper, we consider a scheme in which the relay chooses to cooperate only if the ...