Enhanced DOA estimation exploiting multi-frequency sparse array

S Zhang, A Ahmed, YD Zhang… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this paper, we develop a general framework of multi-frequency sparse array to estimate
the direction-of-arrival (DOA) of a significantly higher number of targets than the number of …

Generalized non-redundant sparse array designs

A Ahmed, YD Zhang - IEEE Transactions on Signal Processing, 2021 - ieeexplore.ieee.org
We present novel generalized non-redundant sparse array design strategies that achieve
the highest possible number of degrees-of-freedom (DOFs) for direction-of-arrival (DOA) …

ISAC system assisted by RIS with sparse active elements

M Asif Haider, YD Zhang, E Aboutanios - EURASIP Journal on Advances …, 2023 - Springer
In this paper, we consider an integrated sensing and communications system assisted by a
reconfigurable intelligent surface (RIS). A small number of sparsely placed active sensors …

Generalized nested array configuration family for direction-of-arrival estimation

P Zhao, Q Wu, Z Chen, G Hu, L Wang… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Sparse arrays have obvious superiority in array element layout and the number of degrees
of freedom (DOF) for resolving more sources than the number of physical sensors with high …

Rearranged coprime array to increase degrees of freedom and reduce mutual coupling

Z Fu, P Chargé, Y Wang - Signal Processing, 2021 - Elsevier
Coprime array for direction of arrivals finding has attracted increasing interest since it can
provide enhanced degrees of freedom. However, due to the holes in the difference coarray …

Efficient DOA and polarization estimation for dual-polarization synthetic nested arrays

Y Yang, G Jiang - IEEE Systems Journal, 2021 - ieeexplore.ieee.org
To obtain a larger aperture for improving parameter estimation performance, we present a
novel polarization sensitive array with dual-polarization synthetic nested structure, and then …

Comparison of nature-inspired techniques in design optimization of non-uniformly spaced arrays in the presence of mutual coupling

E BouDaher, A Hoorfar - Digital Signal Processing, 2020 - Elsevier
In this paper, we investigate the performance of various nature-inspired optimization
algorithms in the design and analysis of non-uniformly spaced arrays. These algorithms …

DOA estimation exploiting interpolated multi-frequency sparse array

S Zhang, A Ahmed, YD Zhang… - 2020 IEEE 11th Sensor …, 2020 - ieeexplore.ieee.org
We consider gridless direction-of-arrival (DOA) estimation of much more targets than the
number of physical sensors through the exploitation of multi-frequency sparse array design …

Direction-of-arrival estimation exploiting distributed sparse arrays

MWTS Chowdhury, YD Zhang - 2021 55th Asilomar …, 2021 - ieeexplore.ieee.org
In this paper, we present a novel direction-of-arrival (DOA) estimation strategy that exploits
distributed sparse sensor arrays and structured matrix completion-based information fusion …

Sparse array design for maximizing the signal-to-interference-plus-noise-ratio by matrix completion

SA Hamza, MG Amin - Digital Signal Processing, 2020 - Elsevier
We consider sparse array beamformer design achieving maximum signal-to interference
plus noise ratio (MaxSINR). Both array configuration and weights are attuned to the …