Search Results for author: Tareq Y. Al-Naffouri

Found 33 papers, 4 papers with code

Characterization of the Global Bias Problem in Aerial Federated Learning

no code implementations29 Dec 2022 Ruslan Zhagypar, Nour Kouzayha, Hesham ElSawy, Hayssam Dahrouj, Tareq Y. Al-Naffouri

To this end, the paper proposes a channel-aware distribution and aggregation scheme to enforce equal contribution from all devices in the FL training as a means to resolve the global bias problem.

Federated Learning

Misspecified Cramér-Rao Bound of RIS-aided Localization under Geometry Mismatch

no code implementations13 Nov 2022 Pinjun Zheng, Hui Chen, Tarig Ballal, Henk Wymeersch, Tareq Y. Al-Naffouri

In 5G/6G wireless systems, reconfigurable intelligent surfaces (RIS) can play a role as a passive anchor to enable and enhance localization in various scenarios.

Localization Coverage Analysis of THz Communication Systems with a 3D Array

no code implementations19 Sep 2022 Pinjun Zheng, Tarig Ballal, Hui Chen, Henk Wymeersch, Tareq Y. Al-Naffouri

This paper considers the problem of estimating the position and orientation of a user equipped with a three-dimensional (3D) array receiving downlink far-field THz signals from multiple base stations with known positions and orientations.

Towards Sustainable Internet of Underwater Things: UAV-aided Energy Efficient Wake-up Solutions

no code implementations25 Aug 2022 Muhammad Muzzammil, Nour Kouzayha, Nasir Saeed, Tareq Y. Al-Naffouri

The IoUT network comprises battery-operated sensor nodes, and replacing or charging such batteries is challenging due to the harsh ocean environment.

Sharp Analysis of RLS-based Digital Precoder with Limited PAPR in Massive MIMO

no code implementations24 May 2022 Xiuxiu Ma, Abla Kammoun, Ayed M. Alrashdi, Tarig Ballal, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini

We show that for this class of precoders, there is an optimal transmit per-antenna power that maximizes the system performance in terms of SINAD and bit error probability.

Antenna Selection in Switch-Based MIMO Arrays via DOA threshold region Approximation

1 code implementation22 May 2022 Hui Chen, Tarig Ballal, Mohammed E. Eltayeb, Tareq Y. Al-Naffouri

We first perform a subarray layout alignment process to remove subarrays with identical beampatterns and create a unique subarray set.

Instantaneous GNSS Ambiguity Resolution and Attitude Determination via Riemannian Manifold Optimization

no code implementations20 May 2022 Xing Liu, Tarig Ballal, Mohanad Ahmed, Tareq Y. Al-Naffouri

Given the characteristics of the employed nonlinear constraints, we formulate GNSS attitude determination as an optimization problem on a manifold.

Portfolio Optimization Using a Consistent Vector-Based MSE Estimation Approach

no code implementations12 Apr 2022 Maaz Mahadi, Tarig Ballal, Muhammad Moinuddin, Tareq Y. Al-Naffouri, Ubaid Al-Saggaf

In a high-dimensional setting, it is well known that the sample covariance matrix is not a proper estimator of the true covariance matrix since it is not invertible when we have fewer observations than the data dimension.

Portfolio Optimization

Constrained Wrapped Least Squares: A Tool for High Accuracy GNSS Attitude Determination

no code implementations29 Dec 2021 Xing Liu, Tarig Ballal, Hui Chen, Tareq Y. Al-Naffouri

Attitude determination is a popular application of Global Navigation Satellite Systems (GNSS).

Terahertz-Band Non-Orthogonal Multiple Access: System- and Link-Level Considerations

no code implementations2 Nov 2021 Ahmed Magbool, Hadi Sarieddeen, Nour Kouzayha, Mohamed-Slim Alouini, Tareq Y. Al-Naffouri

Non-orthogonal multiple access (NOMA) communications promise high spectral efficiency and massive connectivity, serving multiple users over the same time-frequency-code resources.

A Tutorial on Terahertz-Band Localization for 6G Communication Systems

1 code implementation16 Oct 2021 Hui Chen, Hadi Sarieddeen, Tarig Ballal, Henk Wymeersch, Mohamed-Slim Alouini, Tareq Y. Al-Naffouri

Terahertz (THz) communications are celebrated as key enablers for converged localization and sensing in future sixth-generation (6G) wireless communication systems and beyond.

Mean-square Analysis of the NLMS Algorithm

no code implementations8 Aug 2021 Tareq Y. Al-Naffouri, Muhammad Moinuddin, Anum Ali

This work presents a novel approach to the mean-square analysis of the normalized least mean squares (NLMS) algorithm for circular complex colored Gaussian inputs.

Signal Processing and Machine Learning Techniques for Terahertz Sensing: An Overview

no code implementations9 Apr 2021 Sara Helal, Hadi Sarieddeen, Hayssam Dahrouj, Tareq Y. Al-Naffouri, Mohamed Slim Alouini

Following the recent progress in Terahertz (THz) signal generation and radiation methods, joint THz communications and sensing applications are shaping the future of wireless systems.

BIG-bench Machine Learning

Manifold Optimization for High Accuracy Spatial Location Estimation Using Ultrasound Waves

no code implementations28 Mar 2021 Mohammed H. AlSharif, Ahmed Douik, Mohanad Ahmed, Tareq Y. Al-Naffouri, Babak Hassibi

This paper reports the design of a high-accuracy spatial location estimation method using ultrasound waves by exploiting the fixed geometry of the transmitters.

Range Estimation of a Moving Target Using Ultrasound Differential Zadoff-Chu Codes

no code implementations10 Feb 2021 Mohammed H. AlSharif, Mohamed Saad, Mohamed Siala, Mohanad Ahmed, Tareq Y. Al-Naffouri

For the same movement range, the system provides range estimates with a root mean square error (RMSE) less than 0. 76 mm in a high SNR scenario (10 dB), and an MSE less than 0. 85 mm in a low SNR scenario (-10 dB).

DOA Estimation with Non-Uniform Linear Arrays: A Phase-Difference Projection Approach

1 code implementation6 Feb 2021 Hui Chen, Tarig Ballal, Tareq Y. Al-Naffouri

The concept of \emph{wrapped phased-difference pattern} (WPDP) is introduced, which allows the proposed algorithm to compute most of the parameters required for DOA estimation in an offline manner, hence resulting in a superior computational speed in realtime.

Point-to-Point Communication in Integrated Satellite-Aerial Networks: State-of-the-art and Future Challenges

no code implementations11 Dec 2020 Nasir Saeed, Heba Almorad, Hayssam Dahrouj, Tareq Y. Al-Naffouri, Jeff S. Shamma, Mohamed-Slim Alouini

This paper overviews point-to-point (P2P) links for integrated satellite-aerial networks, which are envisioned to be among the key enablers of the sixth-generation (6G) of wireless networks vision.

A Derivation of Identifiable Condition for Non-Uniform Linear Array DOA Estimation

no code implementations31 Aug 2020 Hui Chen, Tarig Ballal, Tareq Y. Al-Naffouri

Phase ambiguity happens in uniform linear arrays (ULAs) when the sensor distance is greater than $\lambda/2$.

Deep Learning in Industrial Internet of Things: Potentials, Challenges, and Emerging Applications

no code implementations15 Aug 2020 Ruhul Amin Khalil, Nasir Saeed, Yasaman Moradi Fard, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini

Notably, the DL algorithms, when applied in the Industrial Internet of Things (IIoT), can enable various applications such as smart assembling, smart manufacturing, efficient networking, and accident detection-and-prevention.

Viral Aerosol Concentration Characterization and Detection in Bounded Environments

no code implementations10 Aug 2020 Osama Amin, Hayssam Dahrouj, Nojood Almayouf, Tareq Y. Al-Naffouri, Basem Shihada, Mohamed-Slim Alouini

The paper models the exhaled breath as a cloud which is emitted through the room continuously, and analyzes the temporal-spatial virus concentration by accounting for partial absorption and reflection at each side of the room.

Climate Monitoring using Internet of X-Things

no code implementations30 May 2020 Nasir Saeed, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini

Global climate change is significantly affecting the life on planet Earth.

An Overview of Signal Processing Techniques for Terahertz Communications

no code implementations27 May 2020 Hadi Sarieddeen, Mohamed-Slim Alouini, Tareq Y. Al-Naffouri

Such progress establishes a foundation for well-grounded research into THz-specific signal processing techniques for wireless communications.

A Doubly Regularized Linear Discriminant Analysis Classifier with Automatic Parameter Selection

no code implementations28 Apr 2020 Alam Zaib, Tarig Ballal, Shahid Khattak, Tareq Y. Al-Naffouri

These methods are used to tune the regularization parameters based on linear estimation models, with the sample covariance matrix's square root being the linear operator.

Asymptotic Analysis of an Ensemble of Randomly Projected Linear Discriminants

no code implementations17 Apr 2020 Lama B. Niyazi, Abla Kammoun, Hayssam Dahrouj, Mohamed-Slim Alouini, Tareq Y. Al-Naffouri

Datasets from the fields of bioinformatics, chemometrics, and face recognition are typically characterized by small samples of high-dimensional data.

Face Recognition

Next Generation Terahertz Communications: A Rendezvous of Sensing, Imaging, and Localization

no code implementations19 Sep 2019 Hadi Sarieddeen, Nasir Saeed, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini

Terahertz (THz)-band communications are celebrated as a key enabling technology for next-generation wireless systems that promises to integrate a wide range of data-demanding and delay-sensitive applications.

Ultra-Massive MIMO Systems at Terahertz Bands: Prospects and Challenges

no code implementations28 Feb 2019 Alice Faisal, Hadi Sarieddeen, Hayssam Dahrouj, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini

Terahertz (THz)-band communications are currently being celebrated as a key technology that could fulfill the increasing demands for wireless data traffic in the upcoming sixth-generation (6G) of wireless communications.

Precise Performance Analysis of the Box-Elastic Net under Matrix Uncertainties

no code implementations11 Jan 2019 Ayed M. Alrashdi, Ismail Ben Atitallah, Tareq Y. Al-Naffouri

In this letter, we consider the problem of recovering an unknown sparse signal from noisy linear measurements, using an enhanced version of the popular Elastic-Net (EN) method.

Precise Performance Analysis of the LASSO under Matrix Uncertainties

no code implementations13 Aug 2018 Ayed M. Alrashdi, Ismail Ben Atitallah, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini

In this paper, we consider the problem of recovering an unknown sparse signal $\xv_0 \in \mathbb{R}^n$ from noisy linear measurements $\yv = \Hm \xv_0+ \zv \in \mathbb{R}^m$.

Information Theory Information Theory

A Large Dimensional Study of Regularized Discriminant Analysis Classifiers

1 code implementation1 Nov 2017 Khalil Elkhalil, Abla Kammoun, Romain Couillet, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini

This article carries out a large dimensional analysis of standard regularized discriminant analysis classifiers designed on the assumption that data arise from a Gaussian mixture model with different means and covariances.

Hand Gesture Recognition Using Ultrasonic Waves

no code implementations24 Oct 2017 Mohammed H. AlSharif, Mohamed Saad, Tareq Y. Al-Naffouri

This paper presents a new method for detecting and classifying a predefined set of hand gestures using a single transmitter and a single receiver utilizing a linearly frequency modulated ultrasonic signal.

Hand Gesture Recognition Hand-Gesture Recognition

Image Denoising Via Collaborative Support-Agnostic Recovery

no code implementations9 Sep 2016 Muzammil Behzad, Mudassir Masood, Tarig Ballal, Maha Shadaydeh, Tareq Y. Al-Naffouri

For sparse reconstruction, the likelihood of a tap being active in a patch is computed and refined through a collaboration process with other similar patches in the same group.

Image Denoising Image Restoration +1

Blind Source Separation Algorithms Using Hyperbolic and Givens Rotations for High-Order QAM Constellations

no code implementations22 Jun 2015 Syed A. W. Shah, Karim Abed-Meraim, Tareq Y. Al-Naffouri

Four new iterative batch BSS algorithms are presented dealing with the multimodulus (MM) and alphabet matched (AM) criteria.

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