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20072026
most citedInterference Alignment for Secrecy

191 citations

Showing 2014Show all

6 papers · 1 filter

cs.NI2014★ 12 cited

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…

cs.NI2014★ 5 cited

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)…

cs.IT2014

Power-Optimal Feedback-Based Random Spectrum Access for an Energy Harvesting Cognitive User

Mahmoud Ashour, Ahmed El Shafie, Amr Mohamed +1

In this paper, we study and analyze cognitive radio networks in which secondary users (SUs) are equipped with Energy Harvesting (EH) capability. We design a random spectrum sensing…

cs.NI2014★ 1 cited

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…

cs.NI2014

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…

cs.IT2014

Using Network Coding to Achieve the Capacity of Deterministic Relay Networks with Relay Messages

Ahmed A. Zewail, Yahya Mohasseb, Mohammed Nafie +1

In this paper, we derive the capacity of the deterministic relay networks with relay messages. We consider a network which consists of five nodes, four of which can only communicat…