600 citations · 1.8k across the 128 of their papers we have counts for
10 papers · 1 filter
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…
An Artificial-Noise-Aided Secure Scheme for Hybrid Parallel PLC/Wireless OFDM Systems
Ahmed El Shafie, Mohamed F. Marzban, Rakan Chabaan +1
We investigate the physical-layer security of indoor hybrid parallel power-line/wireless orthogonal-frequency division-multiplexing (OFDM) communication systems. We propose an arti…
Performance Analysis of Coherent and Noncoherent Modulation under I/Q Imbalance
Bassant Selim, Sami Muhaidat, Paschalis C. Sofotasios +4
In-phase/quadrature-phase Imbalance (IQI) is considered a major performance-limiting impairment in direct-conversion transceivers. Its effects become even more pronounced at higher…
Secure Beamforming in Full-Duplex SWIPT Systems
Yanjie Dong, Ahmed El Shafie, Md. Jahangir Hossain +3
Physical layer security is a key issue in the full duplex (FD) communication systems due to the broadcast nature of wireless channels. In this paper, the joint design of informatio…
Sparsity-Aware Joint Frame Synchronization and Channel Estimation: Algorithm and USRP Implementation
Ozgur Ozdemir, Ridha Hamila, Naofal Al-Dhahir +1
Conventional correlation-based frame synchronization techniques can suffer significant performance degradation over multi-path frequency-selective channels. As a remedy, in this pa…
Hybrid Spatio-Temporal Artificial Noise Design for Secure MIMOME-OFDM Systems
Ahmed El Shafie, Zhiguo Ding, Naofal Al-Dhahir
This paper investigates artificial noise injection into the temporal and spatial dimensions of a legitimate wireless communication system to secure its transmissions from potential…