18 citations · 46 across the 21 of their papers we have counts for
6 papers · 1 filter
Misspecified Cramér-Rao Bound of RIS-aided Localization under Geometry Mismatch
Pinjun Zheng, Hui Chen, Tarig Ballal +2
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. However, most exis…
Localization Coverage Analysis of THz Communication Systems with a 3D Array
Pinjun Zheng, Tarig Ballal, Hui Chen +2
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 mul…
Antenna Selection in Switch-Based MIMO Arrays via DOA threshold region Approximation
Hui Chen, Tarig Ballal, Mohammed E. Eltayeb +1
Direction-of-arrival (DOA) information is vital for multiple-input-multiple-output (MIMO) systems to complete localization and beamforming tasks. Switched antenna arrays have recen…
Instantaneous GNSS Ambiguity Resolution and Attitude Determination via Riemannian Manifold Optimization
Xing Liu, Tarig Ballal, Mohanad Ahmed +1
We present an ambiguity resolution method for Global Navigation Satellite System (GNSS)-based attitude determination. A GNSS attitude model with nonlinear constraints is used to ri…
Sharp Analysis of RLS-based Digital Precoder with Limited PAPR in Massive MIMO
Xiuxiu Ma, Abla Kammoun, Ayed M. Alrashdi +3
This paper focuses on the performance analysis of a class of limited peak-to-average power ratio (PAPR) precoders for downlink multi-user massive multiple-input multiple-output (MI…
Portfolio Optimization Using a Consistent Vector-Based MSE Estimation Approach
Maaz Mahadi, Tarig Ballal, Muhammad Moinuddin +2
This paper is concerned with optimizing the global minimum-variance portfolio's (GMVP) weights in high-dimensional settings where both observation and population dimensions grow at…