24 citations · 121 across the 27 of their papers we have counts for
11 papers · 1 filter
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.…
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…
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…
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…
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…
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…
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…
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…