184 citations · 818 across the 156 of their papers we have counts for
65 papers · 1 filter
How Many RF Chains Does a Microwave Linear Analog Computer (MiLAC) Need to Match the Fully-Digital Cramér-Rao Bound?
Yuchen Zhang, Yu Ge, Bruno Clerckx +1
A microwave linear analog computer (MiLAC) is a tunable microwave network that performs linear operations directly on radio-frequency signals through wave propagation. Used as an a…
UAV-assisted Unbiased Hierarchical Federated Learning: Performance and Convergence Analysis
Ruslan Zhagypar, Nour Kouzayha, Hesham ElSawy +2
The development of the sixth generation (6G) of wireless networks is bound to streamline the transition of computation and learning towards the edge of the network. Hierarchical fe…
Bridging the complexity gap in Tbps-achieving THz-band baseband processing
Hadi Sarieddeen, Hakim Jemaa, Simon Tarboush +3
Recent advances in electronic and photonic technologies have allowed efficient signal generation and transmission at terahertz (THz) frequencies. However, as the gap in THz-operati…
Cross-Field Channel Estimation for Ultra Massive-MIMO THz Systems
Simon Tarboush, Anum Ali, Tareq Y. Al-Naffouri
The large bandwidth combined with ultra-massive multiple-input multiple-output (UM-MIMO) arrays enables terahertz (THz) systems to achieve terabits-per-second throughput. The THz s…
Rate Adaptation in Delay-Sensitive and Energy-Constrained Large-Scale IoT Networks
Mostafa Emara, Nour Kouzayha, Hesham ElSawy +1
Feedback transmissions are used to acknowledge correct packet reception, trigger erroneous packet re-transmissions, and adapt transmission parameters (e.g., rate and power). Despit…
Joint Communication and Computation in Hybrid Cloud/Mobile Edge Computing Networks
Robert-Jeron Reifert, Hayssam Dahrouj, Basem Shihada +3
Facing a vast amount of connections, huge performance demands, and the need for reliable connectivity, the sixth generation of communication networks (6G) is envisioned to implemen…
Single- versus Multi-Carrier Terahertz-Band Communications: A Comparative Study
Simon Tarboush, Hadi Sarieddeen, Mohamed-Slim Alouini +1
The prospects of utilizing single-carrier (SC) and multi-carrier (MC) waveforms in future terahertz (THz)-band communication systems remain unresolved. On the one hand, the limited…
Coverage and Rate Analysis in Coexisting Terahertz and RF Finite Wireless Networks
Nour Kouzayha, Mustafa A. Kishk, Hadi Sarieddeen +2
Wireless communications over Terahertz (THz)-band frequencies are vital enablers of ultra-high rate applications and services in sixth-generation (6G) networks. However, THz commun…
Performance Analysis of Regularized Convex Relaxation for Complex-Valued Data Detection
Ayed M. Alrashdi, Houssem Sifaou
In this work, we study complex-valued data detection performance in massive multiple-input multiple-output (MIMO) systems. We focus on the problem of recovering an -dimensional…
Analysis of Large Scale Aerial Terrestrial Networks with mmWave Backhauling
Nour Kouzayha, Hesham ElSawy, Hayssam Dahrouj +3
Service providers are considering the use of unmanned aerial vehicles (UAVs) to enhance wireless connectivity of cellular networks. To provide connectivity, UAVs have to be backhau…
TeraMIMO: A Channel Simulator for Wideband Ultra-Massive MIMO Terahertz Communications
Simon Tarboush, Hadi Sarieddeen, Hui Chen +4
Following recent advances in terahertz (THz) technology, there is a consensus on the crucial role of THz communications in the next generation of wireless systems. Aiming at cataly…
Distributed Resource Management in Downlink Cache-Enabled Multi-Cloud Radio Access Networks
Robert-Jeron Reifert, Alaa Alameer Ahmad, Hayssam Dahrouj +4
In light of the premises of beyond fifth generation (B5G) networks, the need for better exploiting the capabilities of cloud-enabled networks arises, so as to cope with the large-s…
Terahertz-Band MIMO-NOMA: Adaptive Superposition Coding and Subspace Detection
Hadi Sarieddeen, Asmaa Abdallah, Mohammad M. Mansour +2
We consider the problem of efficient ultra-massive multiple-input multiple-output (UM-MIMO) data detection in terahertz (THz)-band non-orthogonal multiple access (NOMA) systems. We…
Asymptotic Performance of Box-RLS Decoders under Imperfect CSI with Optimized Resource Allocation
Ayed M. Alrashdi, Abla Kammoun, Ali H. Muqaibel +1
This paper considers the problem of symbol detection in massive multiple-input multiple-output (MIMO) wireless communication systems. We consider hard-thresholding preceeded by two…
Stochastic Geometry Analysis of Hybrid Aerial Terrestrial Networks with mmWave Backhauling
Nour Kouzayha, Hesham ElSawy, Hayssam Dahrouj +3
To meet increasing data demands, service providers are considering the use of Unmanned aerial vehicles (UAVs) for delivering connectivity as aerial base stations (BSs). UAVs are es…
Precise Performance Analysis of the LASSO under Matrix Uncertainties
Ayed M. Alrashdi, Ismail Ben Atitallah, Tareq Y. Al-Naffouri +1
In this paper, we consider the problem of recovering an unknown sparse signal $\xv_0 \in \mathbb{R}^n$ from noisy linear measurements $\yv = \Hm \xv_0+ \zv \in \mathbb{R}^m$. A pop…
A Tutorial on Clique Problems in Communications and Signal Processing
Ahmed Douik, Hayssam Dahrouj, Tareq Y. Al-Naffouri +1
Since its first use by Euler on the problem of the seven bridges of Königsberg, graph theory has shown excellent abilities in solving and unveiling the properties of multiple discr…
SNR Estimation in Linear Systems with Gaussian Matrices
Mohamed A. Suliman, Ayed M. Alrashdi, Tarig Ballal +1
This paper proposes a highly accurate algorithm to estimate the signal-to-noise ratio (SNR) for a linear system from a single realization of the received signal. We assume that the…
Numerically Stable Evaluation of Moments of Random Gram Matrices with Applications
Khalil Elkhalil, Abla Kammoun, Tareq Y. Al-Naffouri +1
This paper is focuses on the computation of the positive moments of one-side correlated random Gram matrices. Closed-form expressions for the moments can be obtained easily, but nu…
Blind Measurement Selection: A Random Matrix Theory Approach
Khalil Elkhalil, Abla Kammoun, Tareq Y. Al-Naffouri +1
This paper considers the problem of selecting a set of measurements from available sensor observations. The selected measurements should minimize a certain error function a…
Compressive Sensing for Millimeter Wave Antenna Array Diagnosis
Mohammed E. Eltayeb, Tareq Y. Al-Naffouri, Robert W. Heath
The radiation pattern of an antenna array depends on the excitation weights and the geometry of the array. Due to wind and atmospheric conditions, outdoor millimeter wave antenna e…
Robust Regularized Least-Squares Beamforming Approach to Signal Estimation
Mohamed Suliman, Tarig Ballal, Tareq Y. Al-Naffouri
In this paper, we address the problem of robust adaptive beamforming of signals received by a linear array. The challenge associated with the beamforming problem is twofold. Firstl…
Perturbation-Based Regularization for Signal Estimation in Linear Discrete Ill-posed Problems
Mohamed Suliman, Tarig Ballal, Tareq Y. Al-Naffouri
Estimating the values of unknown parameters from corrupted measured data faces a lot of challenges in ill-posed problems. In such problems, many fundamental estimation methods fail…
Distributed Hybrid Scheduling in Multi-Cloud Networks using Conflict Graphs
Ahmed Douik, Hayssam Dahrouj, Tareq Y. Al-Naffouri +1
Recent studies on cloud-radio access networks assume either signal-level or scheduling-level coordination. This paper considers a hybrid coordinated scheme as a means to benefit fr…