The power of (non-) linear shrinking: A review and guide to covariance matrix estimation
Many econometric and data-science applications require a reliable estimate of the
covariance matrix, such as Markowitz's portfolio selection. When the number of variables is …
covariance matrix, such as Markowitz's portfolio selection. When the number of variables is …
Reverberation chambers for over-the-air tests: An overview of two decades of research
X Chen, J Tang, T Li, S Zhu, Y Ren, Z Zhang… - IEEE …, 2018 - ieeexplore.ieee.org
The reverberation chamber (RC) has traditionally been used for electromagnetic
compatibility tests. About two decade ago, it found application in various over-the-air (OTA) …
compatibility tests. About two decade ago, it found application in various over-the-air (OTA) …
High-performing neural network models of visual cortex benefit from high latent dimensionality
Geometric descriptions of deep neural networks (DNNs) have the potential to uncover core
representational principles of computational models in neuroscience. Here we examined the …
representational principles of computational models in neuroscience. Here we examined the …
[HTML][HTML] Spectrum estimation: A unified framework for covariance matrix estimation and PCA in large dimensions
Covariance matrix estimation and principal component analysis (PCA) are two cornerstones
of multivariate analysis. Classic textbook solutions perform poorly when the dimension of the …
of multivariate analysis. Classic textbook solutions perform poorly when the dimension of the …
Effective dimensionality: A tutorial
M Del Giudice - Multivariate behavioral research, 2021 - Taylor & Francis
The topic of this tutorial is the effective dimensionality (ED) of a dataset, that is, the
equivalent number of orthogonal dimensions that would produce the same overall pattern of …
equivalent number of orthogonal dimensions that would produce the same overall pattern of …
Configuring and verifying reverberation chambers for testing cellular wireless devices
KA Remley, J Dortmans, C Weldon… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
Reverberation chambers provide a repeatable test environment for laboratory over-the-air
testing and represent a viable solution for testing large-form-factor wireless devices. Such …
testing and represent a viable solution for testing large-form-factor wireless devices. Such …
Numerical implementation of the QuEST function
Certain estimation problems involving the covariance matrix in large dimensions are
considered. Due to the breakdown of finite-dimensional asymptotic theory when the …
considered. Due to the breakdown of finite-dimensional asymptotic theory when the …
A significance test for reverberation-chamber measurement uncertainty in total radiated power of wireless devices
We develop a significance test that determines whether the component of uncertainty due to
the finite number of stepped mode-stirring samples or the component due to the lack of …
the finite number of stepped mode-stirring samples or the component due to the lack of …
Empirical Characterization and Modeling of the Propagation Channel inside the VIRC
Over-the-air (OTA) testing and electromagnetic compatibility (EMC) measurements are
widely performed in classical reverberation chambers. A less-known reverberation chamber …
widely performed in classical reverberation chambers. A less-known reverberation chamber …
Reverberation chamber metrology for wireless internet of things devices: Flexibility in form factor, rigor in test
A Hubrechsen, KA Remley… - IEEE Microwave …, 2022 - ieeexplore.ieee.org
Internet of things (IoT) devices are proliferating in our connected world, with the number of
devices expected to exceed 14 billion in 2023. Wireless IoT applications are increasing day …
devices expected to exceed 14 billion in 2023. Wireless IoT applications are increasing day …