600 citations · 1.8k across the 128 of their papers we have counts for
9 papers · 1 filter
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…
Secure Beamforming in Full-Duplex SWIPT Systems With Loopback Self-Interference Cancellation
Yanjie Dong, Ahmed El Shafie, Md. Jahangir Hossain +3
Security is a critical issue in full duplex (FD) communication systems due to the broadcast nature of wireless channels. In this paper, joint design of information and artificial n…
On the Monetary Loss Due to Passive and Active Attacks on MIMO Smart Grid Communications
Ahmed El Shafie, Hamadi Chihaoui, Ridha Hamila +3
We consider multiple source nodes (consumers) communicating wirelessly their energy demands to the meter data-management system (MDMS) over the subarea gateway(s). We quantify the…
Cooperative Access Schemes for Efficient SWIPT Transmissions in Cognitive Radio Networks
Ahmed El Shafie, Naofal Al-Dhahir, Ridha Hamila
We investigate joint information and energy cooperative schemes in a slotted-time cognitive radio network with a primary transmitter-receiver pair and a set of secondary transmitte…
A Secure Multiple-Access Scheme for Rechargeable Wireless Sensors in the Presence of an Eavesdropper
Ahmed El Shafie, Naofal Al-Dhahir
We propose a simple yet efficient scheme for a set of energy-harvesting sensors to establish secure communication with a common destination (a master node). An eavesdropper attempt…
An Artificial-Noise-Aided Hybrid TS/PS Scheme for OFDM-Based SWIPT Systems
Ahmed El Shafie, Kamel Tourki, Naofal Al-Dhahir
We propose a new artificial-noise aided hybrid time-switching/power-splitting scheme for orthogonal frequency-division multiplexing (OFDM) systems to securely transmit data and tra…