Dr. Ghefar Alrefai
- PHD in 2024:Faculty of Electrical and Electronic Engineering, the University of Aleppo – Syria, Communications Engineering Dept.
- Master of CE 2011 - 2017 : Faculty of Electrical and Electronic Engineering, the University of Aleppo – Syria, Communications Engineering Dept, average mark (87.97%), rating “Excellent“.
- Bachelor of CE 2005 – 2010 : Faculty of Electrical and Electronic Engineering, the University of Aleppo – Syria, Department of Communications Engineering, average mark (78.86%), rating „Very Good“, obtained the Second class out of 72 graduated students.
- Scientific Baccalaureate 2002 – 2005 : The General Secondary Education Certificate, Scientific Branch, Aleppo, Syria, average mark (93.75%), rating "Excellent".
Contact
- ghefar.refai@ebla.edu.sy
Experiences:
- Faculty Member, College of Engineering – Department of Information and Communication Engineering, Ebla Private University, 2024 – Present.
- Director of the Information Technology Directorate, Ebla Private University, December 2025 – Present.
- Lecturer, College of Information Engineering, Cordoba Private University, 2026.
- Member of the Information Engineering Committee, Engineers Syndicate – Aleppo Branch, 2025 – Present.
- Practicing Engineer, Engineers Syndicate – Aleppo Branch, 2017 – Present.
- Scientific and Linguistic Reviewer, Hassoub Academy for Technology, 2019 – 2024.
- Technical Staff Member, College of Engineering – Department of Information and Communication Engineering, Ebla Private University, 2019 – 2024.
- Lecturer, College of Electronic and Electrical Engineering – Department of Communication Engineering
(Courses: Computer Networks and Digital Communications), 2011 – 2024.
Researches:
Managing radio resources in public safety situations based on Device- to-Device communications within a hybrid multiple access system in 5G Networks
Managing wireless infrastructure is very essential and crucial after natural disasters such as earthquakes, hurricanes, landslides or man-made disasters such as wars. Rapid information gathering after a disaster helps in achieving effective communication management, as the pressure of users to maintain constant communication with family and friends causes bottlenecks and communication failures for other users. Device-to-device (D2D) communication technology reduces this pressure by relying on the proximity of users, thus increasing the efficiency of spectrum utilization. A many-to-many matching algorithm with an adaptive splitting factor and reuse factor was proposed for two scenarios and the results were evaluated using MATLAB simulation software. The results showed that the proposed algorithm outperforms the recently used Gale-Shapley matching algorithms in achieving effective management of radio resources in emergency situations, and it also succeeded in improving productivity and serving a larger number of users effectively. - International Research Journal of Engineering and Technology (IRJET)
Read More >>A proposed algorithm for power control and resource allocation in emergency situations
Managing wireless networks is crucial after natural disasters or conflicts, where communication systems often become overloaded due to high demand. Device-to-device (D2D) communication helps reduce network congestion by allowing nearby users to communicate directly, improving spectrum efficiency. A many-to-many matching algorithm with adaptive parameters was proposed and tested using MATLAB simulations. The results show that the proposed method outperforms the Gale-Shapley algorithm in managing radio resources during emergencies, improving efficiency and supporting a larger number of users - Arab Journal of Sciences & Research Publishing - Journal of Engineering Sciences and Information Technology
Read More >>Enhancing Chopping and Setting Content Algorithm to Improve QoS of Mobile IPTV in LTE Network.
IPTV (Internet Protocol Television) especially VoD (Video on Demand) will become winner technology in the near future .It was targeted to fixed terminals and developed for mobility support. So it’s very interesting topics how to deliver IPTV VOD service to a mobile subscriber by providing high QoS(Quality of Service) in 4G networks especially LTE(Long Term Evolution).The most important QoS parameters are bit error rate (BER) and delay time which make IPTV VoD service unsatisfied and not acceptable if they're under the limit. In this research, we have worked on enhancing chopping television content and setting in physical channels in LTE networks. Performance have been evaluated by simulating the system using MATLAB; where the results showed an improvement in performance of the proposed alogorithm; this improvement in performance have evaluated in terms of BER and Delay time - Aleppo University Research Journal
Read More >>Applying a Hyprid (Static-Dynamic) Content Chopping and Setting Algorithm to Improve QoS of Mobile-IPTV in LTE Network.
The Demand of IPTV (Internet Protocol Television) services is growing significantly in the mobile communications industry. To support a large number of users with limited radio sources, the effective transmission technology for television content has to be developed. In this research, we suggest integration of static and dynamic segmenting algorithms for television content to improve QoS (Quality of Service) of VoD (Video on Demand) service over the IPTV wireless network in the LTE (Long Term Evolution) system. Performance have been evaluated by simulating the system using MATLAB, where the results have shown an improvement in performance of the proposed alogorithm; this improvement in performance have been evaluated in terms of BER and Delay time. - Aleppo University Research Journal
Read More >>