2 citations · 2 across the 3 of their papers we have counts for
7 papers
Novel Secret-Key-Assisted Schemes for Secure MISOME-OFDM Systems
Mohamed Marzban, Ahmed El Shafie, Naofal Al-Dhahir
We propose a new secure transmission scheme for uplink multiple-input single-output (MISO) orthogonal-frequency multiplexing (OFDM) systems in the presence of multiple eavesdropper…
On the Performance of Quickest Detection Spectrum Sensing: The Case of Cumulative Sum
Ahmed Badawy, Ahmed El Shafie, Tamer Khattab
Quickest change detection (QCD) is a fundamental problem in many applications. Given a sequence of measurements that exhibits two different distributions around a certain flipping…
Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret-Key Aided Schemes
Mohamed F. Marzban, Ahmed El Shafie, Naofal Al-Dhahir +1
We investigate the physical layer security of uplink single-carrier frequency-division multiple-access (SC-FDMA) systems. Multiple users, Alices, send confidential messages to a co…
Securing Untrusted Full-Duplex Relay Channels in the Presence of Multiple External Cluster-Based Eavesdroppers
Ahmed El Shafie, Asma Mabrouk, Kamel Tourki +2
This letter investigates the physical layer security in a wireless cooperative network where communication is assisted by a full-duplex (FD) untrusted relay in the presence of mult…
Securing OFDM-Based Wireless Links Using Temporal Artificial-Noise Injection
Mohamed F. Marzban, Ahmed El Shafie, Rakan Chabaan +1
We investigate the physical layer security of wireless single-input single-output orthogonal-division multiplexing (OFDM) when a transmitter, which we refer to as Alice, sends her…
Thresholds Optimization for One-Bit Feedback Multi-User Scheduling
Mohammed Hafez, Ahmed El Shafie, Mohammed Shaqfeh +3
We propose a new one-bit feedback scheme with scheduling decision based on the maximum expected weighted rate. We show the concavity of the -user case and provide the optimal so…