User profiles for Hassan Yousif Ahmed

Hassan Yousif Ahmed

Professor, Electrical Engineering, Prince Sattam Bin Abdulaziz University
Verified email at sau.edu.sa
Cited by 709

New high-gain transformerless dc/dc boost converter system

HY Ahmed, O Abdel-Rahim, ZM Ali - Electronics, 2022 - mdpi.com
This article proposes a new high-gain transformerless dc/dc boost converter. Although they
possess the ability to boost voltage at higher voltage levels, converter switching devices are …

[HTML][HTML] Capacity enhancement for free space optics transmission system using orbital angular momentum optical code division multiple access in 5G and beyond …

SAA El-Mottaleb, M Singh, A Chehri, HY Ahmed… - Energies, 2022 - mdpi.com
This paper introduces a novel free space optics (FSO) communication system for future-generation
high-speed networks. The proposed system integrates orbital angular momentum (…

Diagonal Eigenvalue Unity (DEU) code for spectral amplitude coding-optical code division multiple access

HY Ahmed, KS Nisar - Optical Fiber Technology, 2013 - Elsevier
Code with ideal in-phase cross correlation (CC) and practical code length to support high
number of users are required in spectral amplitude coding-optical code division multiple …

[HTML][HTML] Two-dimensional permutation vectors'(PV) code for optical code division multiple access systems

H Yousif Ahmed, M Zeghid, W A. Imtiaz, T Sharma… - Entropy, 2020 - mdpi.com
In this paper, we present a new algorithm to generate two-dimensional (2D) permutation
vectors’ (PV) code for incoherent optical code division multiple access (OCDMA) system to …

A multi-objective planning strategy for electric vehicle charging stations towards low carbon-oriented modern power systems

HY Ahmed, ZM Ali, MM Refaat, SHEA Aleem - Sustainability, 2023 - mdpi.com
This paper proposes a multi-objective planning framework for electric vehicle (EV) charging
stations in emerging power networks that move towards green transportation electrification. …

Speed/Area-Efficient ECC Processor Implementation Over GF(2m) on FPGA via Novel Algorithm-Architecture Co-Design

M Zeghid, HY Ahmed, A Chehri… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
With the rapid evolution of security technology, small field-size elliptic curve-based point
multiplication (PM) has gradually become obsolete, leading to the implementation of PM with …

[HTML][HTML] A high-speed integrated OFDM/DPS-OCDMA-based FSO transmission system: Impact of atmospheric conditions

M Singh, SA Abd El-Mottaleb, HY Ahmed… - Alexandria Engineering …, 2023 - Elsevier
Free space optics (FSO) communication systems are preferred due to their high transmission
capacity so it can support the ever-increasing volume of online traffic. Optical code division …

Performance enhancement of FSO communication system under rainy weather environment using a novel encryption technique

SA Abd El-Mottaleb, AG Mohamed, HY Ahmed… - IEEE …, 2024 - ieeexplore.ieee.org
Free Space Optics (FSO) has emerged as a viable solution to meet the growing demand for
high bandwidth, secure data transmission, and high speed. However, the FSO system is …

Performance of cipher image transmission in free space optics under foggy weather

…, A Chehri, M Singh, A Atieh, HY Ahmed… - IEEE …, 2023 - ieeexplore.ieee.org
This paper proposes a new cipher image transmission system in free space optics system (FSO).
A secure and effective image cryptosystem algorithm based on the Choquet fuzzy …

[HTML][HTML] Performance evaluation of a 160-Gbit/s OCDMA-FSO system via Laguerre-Gaussian beams under weather conditions

SA Abd El-Mottaleb, M Singh, HY Ahmed… - Alexandria Engineering …, 2023 - Elsevier
For capacity enhancement of free space optics (FSO) communication, a new model based
on using four Laguerre-Gaussian (LG) beams, each carries four different users use optical …