18 citations · 89 across the 23 of their papers we have counts for
18 papers · 1 filter
Timely Multi-Process Estimation Over Erasure Channels With and Without Feedback: Signal-Independent Policies
Karim Banawan, Ahmed Arafa, Karim G. Seddik
We consider a multi-process remote estimation system observing independent Ornstein-Uhlenbeck processes. In this system, a shared sensor samples the processes in such a way…
Timely Multi-Process Estimation with Erasures
Karim Banawan, Ahmed Arafa, Karim G. Seddik
We consider a multi-process remote estimation system observing independent Ornstein-Uhlenbeck processes. In this system, a shared sensor samples the processes in such a way…
Optimization of Energy-Constrained IRS-NOMA Using a Complex Circle Manifold Approach
Mahmoud AlaaEldin, Emad Alsusa, Karim G. Seddik +2
This work investigates the performance of intelligent reflective surfaces (IRSs) assisted uplink non-orthogonal multiple access (NOMA) in energy-constrained networks. Specifically,…
Sample, Quantize and Encode: Timely Estimation Over Noisy Channels
Ahmed Arafa, Karim Banawan, Karim G. Seddik +1
The effects of quantization and coding on the estimation quality of Gauss-Markov processes are considered, with a special attention to the Ornstein-Uhlenbeck process. Samples are a…
Timely Estimation Using Coded Quantized Samples
Ahmed Arafa, Karim Banawan, Karim G. Seddik +1
The effects of quantization and coding on the estimation quality of a Gauss-Markov, namely Ornstein-Uhlenbeck, process are considered. Samples are acquired from the process, quanti…
On Timely Channel Coding with Hybrid ARQ
Ahmed Arafa, Karim Banawan, Karim G. Seddik +1
A status updating communication system is examined, in which a transmitter communicates with a receiver over a noisy channel. The goal is to realize timely delivery of fresh data o…
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…
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 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…
On the Stability of Random Multiple Access with Feedback Exploitation and Queue Priority
Karim G. Seddik
In this paper, we study the stability of two interacting queues under random multiple access in which the queues leverage the feedback information. We derive the stability region u…
Pseudo-Lattice Treatment for Subspace Aligned Interference Signals
Yahya H. Ezzeldin, Karim G. Seddik
For multi-input multi-output (MIMO) K-user interference networks, we propose the use of a channel transformation technique for joint detection of the useful and interference signal…
Sparse Reconstruction-based Detection of Spatial Dimension Holes in Cognitive Radio Networks
Yahya H. Ezzeldin, Radwa A. Sultan, Karim G. Seddik
In this paper, we investigate a spectrum sensing algorithm for detecting spatial dimension holes in Multiple Inputs Multiple Outputs (MIMO) transmissions for OFDM systems using Com…
Effective Capacity of Delay Constrained Cognitive Radio Links Exploiting Primary Feedback
Ahmed H. Anwar, Karim G. Seddik, Tamer ElBatt +1
In this paper, we analyze the performance of a secondary link in a cognitive radio (CR) system operating under statistical quality of service (QoS) delay constraints. In particular…
On the Diversity Gain Region of the Z-interference Channels
Mohamed S. Nafea, Karim G. Seddik, Mohammed Nafie +1
In this work, we analyze the diversity gain region (DGR) of the single-antenna Rayleigh fading Z-Interference channel (ZIC). More specifically, we characterize the achievable DGR o…
A Diversity-Multiplexing-Delay Tradeoff of ARQ Protocols in The Z-interference Channel
Mohamed S. Nafea, D. Hamza, Karim G. Seddik +2
In this work, we analyze the fundamental performance tradeoff of the single-antenna Automatic Retransmission reQuest (ARQ) Z-interference channel (ZIC). Specifically, we characteri…