50 citations · 149 across the 38 of their papers we have counts for
5 papers · 1 filter
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…
The Deterministic Capacity of Relay Networks with Relay Private Messages
Ahmed A. Zewail, Y. Mohasseb, M. Nafie +1
We study the capacity region of a deterministic 4-node network, where 3 nodes can only communicate via the fourth one. However, the fourth node is not merely a relay since it can e…
On the Coexistence of a Primary User with an Energy Harvesting Secondary User: A Case of Cognitive Cooperation
Ahmed El Shafie, Tamer Khattab, Amr El-Keyi +1
In this paper, we consider a cognitive scenario where an energy harvesting secondary user (SU) shares the spectrum with a primary user (PU). The secondary source helps the primary…
Achievable Degrees of Freedom Region of the MIMO Relay Networks using the Detour Schemes
Ahmed A. Zewail, M. Nafie, Y. Mohasseb +1
In this paper, we study the degrees of freedom (DoF) of the MIMO relay networks. We start with a general Y channel, where each user has antennas and aims to exchange messages…
The Deterministic Multicast Capacity of 4-Node Relay Networks
Ahmed A. Zewail, M. Nafie, Y. Mohasseb +1
In this paper, we completely characterize the deterministic capacity region of a four-node relay network with no direct links between the nodes, where each node communicates with t…