24 citations · 121 across the 27 of their papers we have counts for
31 papers
FLoBC: A Decentralized Blockchain-Based Federated Learning Framework
Mohamed Ghanem, Fadi Dawoud, Habiba Gamal +3
The rapid expansion of data worldwide invites the need for more distributed solutions in order to apply machine learning on a much wider scale. The resultant distributed learning s…
Wireless energy and information transfer in networks with hybrid ARQ
Mehdi Salehi Heydar Abad, Ozgur Ercetin, Tamer Elbatt +1
In this paper, we consider a class of wireless powered communication devices using hybrid automatic repeat request (HARQ) protocol to ensure reliable communications. In particular,…
A Converse Bound for Cache-Aided Interference Networks
Antonious M. Girgis, Ozgur Ercetin, Mohammed Nafie +1
In this paper, an interference network with arbitrary number of transmitters and receivers is studied, where each transmitter is equipped with a finite size cache. We obtain an inf…
Towards Optimal Resource Allocation in Wireless Powered Communication Networks with Non-Orthogonal Multiple Access
Mariam M. N. Aboelwafa, Mohamed A. Abd-Elmagid, Alessandro Biason +3
The optimal allocation of time and energy resources is characterized in a Wireless Powered Communication Network (WPCN) with non-Orthogonal Multiple Access (NOMA). We consider two…
Degrees of Freedom of Interference Networks with Transmitter-Side Caches
Antonious M. Girgis, Ozgur Ercetin, Mohammed Nafie +1
This paper studies cache-aided interference networks with arbitrary number of transmitters and receivers, whereby each transmitter has a cache memory of finite size. Each transmitt…
SWIPT using Hybrid ARQ over Time Varying Channels
Mehdi Salehi Heydar Abad, Ozgur Ercetin, Mohamed Nafie +1
We consider a class of wireless powered devices employing Hybrid Automatic Repeat reQuest (HARQ) to ensure reliable end-to-end communications over a two-state time-varying channel.…
Stable Throughput of Cooperative Cognitive Networks with Energy Harvesting: Finite Relay Buffer and Finite Battery Capacity
Mohamed A. Abd-Elmagid, Tamer ElBatt, Karim G. Seddik +1
This paper studies a generic model for cooperative cognitive radio networks where the secondary user is equipped with a finite relay queue as well as a finite battery queue. Our pr…
Non-Orthogonal Multiple Access Schemes in Wireless Powered Communication Networks
Mohamed A. Abd-Elmagid, Alessandro Biason, Tamer ElBatt +2
We characterize time and power allocations to optimize the sum-throughput of a Wireless Powered Communication Network (WPCN) with Non-Orthogonal Multiple Access (NOMA). In our setu…
Decentralized Coded Caching in Wireless Networks: Trade-off between Storage and Latency
Antonious M. Girgis, Ozgur Ercetin, Mohammed Nafie +1
This paper studies the decentralized coded caching for a Fog Radio Access Network (F-RAN), whereby two edge-nodes (ENs) connected to a cloud server via fronthaul links with limited…
Cache-Aided Heterogeneous Networks: Coverage and Delay Analysis
Mohamed A. Abd-Elmagid, Ozgur Ercetin, Tamer ElBatt
This paper characterizes the performance of a generic -tier cache-aided heterogeneous network (CHN), in which the base stations (BSs) across tiers differ in terms of their spati…
Asymmetric Degrees of Freedom of the Full-Duplex MIMO 3-Way Channel with Unicast and Broadcast Messages
Adel M. Elmahdy, Amr El-Keyi, Yahya Mohasseb +4
In this paper, we characterize the asymmetric total degrees of freedom (DoF) of a multiple-input multiple-output (MIMO) 3-way channel. Each node has a separate-antenna full-duplex…
Sparse Spectrum Sensing in Infrastructure-less Cognitive Radio Networks via Binary Consensus Algorithms
Mohamed Seif, Tamer Elbatt, Karim G. Seddik
Compressive Sensing has been utilized in Cognitive Radio Networks (CRNs) to exploit the sparse nature of the occupation of the primary users. Also, distributed spectrum sensing has…
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.…
Energy-Aware Cooperative Wireless Networks with Multiple Cognitive Users
Mahmoud Ashour, M. Majid Butt, Amr Mohamed +2
In this paper, we study and analyze cooperative cognitive radio networks with arbitrary number of secondary users (SUs). Each SU is considered a prospective relay for the primary u…
On Optimal Policies in Full-Duplex Wireless Powered Communication Networks
Mohamed A. Abd-Elmagid, Alessandro Biason, Tamer ElBatt +2
The optimal resource allocation scheme in a full-duplex Wireless Powered Communication Network (WPCN) composed of one Access Point (AP) and two wireless devices is analyzed and der…
Optimization of Energy-Constrained Wireless Powered Communication Networks with Heterogeneous Nodes
Mohamed A. Abd-Elmagid, Tamer ElBatt, Karim G. Seddik
In this paper, we study wireless networks where nodes have two energy sources, namely a battery and radio frequency (RF) energy harvesting circuitry. We formulate two optimization…
An Information-theoretic Model for Knowledge Sharing in Opportunistic Social Networks
Mai ElSherief, Tamer ElBatt, Ahmed Zahran +1
In this paper we establish fundamental limits on the performance of knowledge sharing in opportunistic social net- works. In particular, we introduce a novel information-theoretic…
Maximum Throughput Opportunistic Network Coding in Two-Way Relay Networks
Maha Zohdy, Tamer ElBatt, Mohamed Nafie
In this paper, we study Two-way relaying networks well-known for its throughput merits. In particular, we study the fundamental throughput delay trade-off in two-way relaying netwo…
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…
Effective Capacity of Cognitive Radio Links: Accessing Primary Feedback Erroneously
M. Majid Butt, Ahmed Anwar, Amr Mohamed +1
We study the performance of a cognitive system modeled by one secondary and one primary link and operating under statistical quality of service (QoS) delay constraints. We analyze…
Cognitive Radio Networks with Probabilistic Relaying: Stable Throughput and Delay Tradeoffs
Mahmoud Ashour, Amr A. El-Sherif, Tamer ElBatt +1
In this paper, we study and analyze fundamental throughput and delay tradeoffs in cooperative multiple access for cognitive radio systems. We focus on the class of randomized coope…
Interference-Based Optimal Power-Efficient Access Scheme for Cognitive Radio Networks
Ahmed H. Anwar, Ahmed El Shafie, Amr Mohamed +2
In this paper, we propose a new optimization-based access strategy of multipacket reception (MPR) channel for multiple secondary users (SUs) accessing the primary user (PU) spectru…
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…