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Ahmed H. Abd El-Malek
Researcher at Egypt-Japan University of Science and Technology
Publications - 54
Citations - 460
Ahmed H. Abd El-Malek is an academic researcher from Egypt-Japan University of Science and Technology. The author has contributed to research in topics: Relay & Cognitive radio. The author has an hindex of 9, co-authored 43 publications receiving 322 citations. Previous affiliations of Ahmed H. Abd El-Malek include Pharos University in Alexandria & King Fahd University of Petroleum and Minerals.
Papers
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Journal ArticleDOI
Security-Reliability Trade-Off Analysis for Multiuser SIMO Mixed RF/FSO Relay Networks With Opportunistic User Scheduling
TL;DR: A new cooperative jamming model is proposed in which the worst user is selected by the authorized system to jam the existing eavesdropper.
Journal ArticleDOI
Effect of RF Interference on the Security-Reliability Tradeoff Analysis of Multiuser Mixed RF/FSO Relay Networks With Power Allocation
TL;DR: The secrecy performance is studied in the presence of CCI at both the authorized relay and eavesdropper, where closed-form expressions are derived for the intercept probability and the physical layer security performance is enhanced using cooperative jamming models.
Journal ArticleDOI
Outage Analysis of Mixed Underlay Cognitive RF MIMO and FSO Relaying With Interference Reduction
Fawaz S. Al-Qahtani,Ahmed H. Abd El-Malek,Imran Shafique Ansari,Redha M. Radaydeh,Salam A. Zummo +4 more
TL;DR: A system model of multiuser mixed underlay radio frequency (RF)/multidestinations free-space optical (FSO) links is studied and optimal power allocation between the two hops is obtained based on the derived asymptotic outage probability expressions.
Journal ArticleDOI
New Bandwidth Efficient Relaying Schemes in Cooperative Cognitive Two-Way Relay Networks With Physical Layer Security
TL;DR: The proposed model is shown to achieve a nonzero secrecy rate that improves the PU system security against eavesdropping attacks and the error performance of the proposed relay selection model outperforms the conventional two-way relaying networks with AF protocol.
Proceedings ArticleDOI
Resource Allocation and Cluster Formation for Imperfect NOMA in DL/UL Decoupled HetNets
Abdulkadir Celik,Redha M. Radaydeh,Fawaz S. Al-Qahtani,Ahmed H. Abd El-Malek,Mohamed-Slim Alouini +4 more
TL;DR: This paper investigates the resource allocation and cluster formation aspects of NOMA for downlink (DL) uplink (UL) decoupled (DUDe) heterogeneous networks (HetNets) and shows that using the DL decoding order limits UL-NOMA performance by that of OMA.