191 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Cairo UniversityEG17 papers
- The Ohio State UniversityUS16 papers
- Alexandria UniversityEG13 papers
- American University in CairoEG10 papers
- Qatar UniversityQA9 papers
- Egypt-Japan University of Science and TechnologyEG7 papers
- Ain Shams UniversityEG6 papers
- Goethe University FrankfurtDE5 papers
- Joint Institute for Nuclear ResearchRU5 papers
- Helwan UniversityEG4 papers
- Military Technical CollegeEG4 papers
- Princeton UniversityUS4 papers
24 papers · 1 filter
DRL-Driven Edge-Aware Utility Optimization for Multi-Slice 6G Networks
Khaled M. Naguib, Soumaya Cherkaoui, Mahmoud M. Elmessalawy +2
Virtual Reality (VR) services delivered over 6G networks demand ultra-low latency and high bandwidth to ensure seamless user experiences. This paper presents an intelligent resourc…
Cognitive Access Protocol for Alleviating Sensing Errors in Cognitive Multiple-Access Systems
Ahmed El Shafie
This letter studies a time-slotted multiple-access system with a primary user (PU) and a secondary user (SU) sharing the same channel resource. We propose a novel secondary access…
On Optimizing Cooperative Cognitive User Performance under Primary QoS Constraints
Adel M. Elmahdy, Amr El-Keyi, Tamer ElBatt +1
We study the problem of optimizing the performance of cognitive radio users with opportunistic real-time applications subject to primary users quality-of-service (QoS) constraints.…
Censoring for Improved Sensing Performance in Infrastructure-less Cognitive Radio Networks
Mohamed Seif, Mohammed Karmoose, Moustafa Youssef
Censoring has been proposed to be utilized in wireless distributed detection networks with a fusion center to enhance network performance in terms of error probability in addition…
Stability Analysis of Slotted Aloha with Opportunistic RF Energy Harvesting
Abdelrahman M. Ibrahim, Ozgur Ercetin, Tamer ElBatt
Energy harvesting (EH) is a promising technology for realizing energy efficient wireless networks. In this paper, we utilize the ambient RF energy, particularly interference from n…
On the Stable Throughput of Cooperative Cognitive Radio Networks with Finite Relaying Buffer
Adel M. Elmahdy, Amr El-Keyi, Tamer ElBatt +1
In this paper, we study the problem of cooperative communications in cognitive radio systems where the secondary user has limited relaying room for the overheard primary packets. M…
A Probabilistic MAC for Cognitive Radio Systems with Energy Harvesting Nodes
Ramy E. Ali, Fadel F. Digham, Karim G. Seddik +3
In this paper, we consider a cognitive radio (CR) system where the secondary user (SU) harvests energy from both the nature resources and the primary user (PU) radio frequency(RF)…
Maximum Throughput of a Secondary User Cooperating with an Energy-Aware Primary User
Ahmed El Shafie, Ahmed Sultan, Tamer Khattab
This paper proposes a cooperation protocol between a secondary user (SU) and a primary user (PU) which dedicates a free frequency subband for the SU if cooperation results in energ…
Probabilistic Band-Splitting for a Buffered Cooperative Cognitive Terminal
Ahmed El Shafie, Ahmed Sultan, Tamer Khattab
In this paper, we propose a cognitive protocol that involves cooperation between the primary and secondary users. In addition to its own queue, the secondary user (SU) has a queue…
Band Allocation for Cognitive Radios with Buffered Primary and Secondary Users
Ahmed El Shafie, Ahmed Sultan, Tamer Khattab
In this paper, we study band allocation of buffered secondary users (SUs) to orthogonal primary licensed bands, where each primary band is assigned…
A Pricing-Based Cooperative Spectrum Sharing Stackelberg Game
Ramy E. Ali, Karim G. Seddik, Mohammed Nafie +1
We consider the problem of cooperative spectrum sharing among a primary user (PU) and multiple secondary users (SUs) under quality of service (QoS) constraints. The SUs network is…
Protocol Design and Stability Analysis of Cooperative Cognitive Radio Users
Ahmed El Shafie, Tamer Khattab, H. Vincent Poor
A single cognitive radio transmitter--receiver pair shares the spectrum with two primary users communicating with their respective receivers. Each primary user has a local traffic…
Improved Spectrum Mobility using Virtual Reservation in Collaborative Cognitive Radio Networks
Ayman T. Abdel-Hamid, Ahmed H. Zahran, Tamer ElBatt
Cognitive radio technology would enable a set of secondary users (SU) to opportunistically use the spectrum licensed to a primary user (PU). On the appearance of this PU on a speci…
Optimal Selection of Spectrum Sensing Duration for an Energy Harvesting Cognitive Radio
Ahmed El Shafie, Ahmed Sultan
In this paper, we consider a time-slotted cognitive radio (CR) setting with buffered and energy harvesting primary and CR users. At the beginning of each time slot, the CR user pro…
Coverage Probability Analysis for Wireless Networks Using Repulsive Point Processes
Abdelrahman M. Ibrahim, Tamer ElBatt, Amr El-Keyi
The recent witnessed evolution of cellular networks from a carefully planned deployment to more irregular, heterogeneous deployments of Macro, Pico and Femto-BSs motivates new anal…
Cooperative Access in Cognitive Radio Networks: Stable Throughput and Delay Tradeoffs
Mahmoud Ashour, Amr A. El-Sherif, Tamer ElBatt +1
In this paper, we study and analyze fundamental throughput-delay tradeoffs in cooperative multiple access for cognitive radio systems. We focus on the class of randomized cooperati…
Optimal Random Access and Random Spectrum Sensing for an Energy Harvesting Cognitive Radio
Ahmed El Shafie, Ahmed Sultan
We consider a secondary user with energy harvesting capability. We design access schemes for the secondary user which incorporate random spectrum sensing and random access, and whi…
On the Role of Vehicular Mobility in Cooperative Content Caching
Osama Attia, Tamer ElBatt
In this paper, we analyze the performance of cooperative content caching in vehicular ad hoc networks (VANETs). In particular, we characterize, using analysis and simulations, the…
CellSense: An Accurate Energy-Efficient GSM Positioning System
Mohamed Ibrahim, Moustafa Youssef
Context-aware applications have been gaining huge interest in the last few years. With cell phones becoming ubiquitous computing devices, cell phone localization has become an impo…
A Distributed Data Collection Algorithm for Wireless Sensor Networks with Persistent Storage Nodes
Salah A. Aly, Ahmed Ali-Eldin, H. Vincent Poor
A distributed data collection algorithm to accurately store and forward information obtained by wireless sensor networks is proposed. The proposed algorithm does not depend on the…
A Hidden Markov Model for Localization Using Low-End GSM Cell Phones
Mohamed Ibrahim, Moustafa Youssef
Research in location determination for GSM phones has gained interest recently as it enables a wide set of location based services. RSSI-based techniques have been the preferred me…
CellSense: A Probabilistic RSSI-based GSM Positioning System
Mohamed Ibrahim, Moustafa Youssef
Context-aware applications have been gaining huge interest in the last few years. With cell phones becoming ubiquitous computing devices, cell phone localization has become an impo…
AROMA: Automatic Generation of Radio Maps for Localization Systems
Ahmed Eleryan, Mohamed Elsabagh, Moustafa Youssef
WLAN localization has become an active research field recently. Due to the wide WLAN deployment, WLAN localization provides ubiquitous coverage and adds to the value of the wireles…
Overlapping Multi-hop Clustering for Wireless Sensor Networks
Moustafa Youssef, Adel Youssef, Mohamed Younis
Clustering is a standard approach for achieving efficient and scalable performance in wireless sensor networks. Traditionally, clustering algorithms aim at generating a number of d…