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Covariance matrix estimation with heterogeneous samples [PDF]
, 2008 We consider the problem of estimating the covariance matrix Mp of an observation vector, using heterogeneous training samples, i.e., samples whose covariance matrices are not exactly Mp.
Besson, Olivier +2 more
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Improved Mainlobe Interference Suppression Based on Blocking Matrix Preprocess
Journal of Electrical and Computer Engineering, 2015 For the problem of mainlobe direction shifting that is caused by the mainlobe interference suppression based on blocking matrix preprocess, an effective method is proposed which is based on the combination of diagonal loading and linear constraints ...
Jie Yang, Congfeng Liu
doaj +1 more source
Is there a role for GPS in determining functional ankle rehabilitation progression criteria? A preliminary study [PDF]
, 2018 Context: Contemporary developments in Global Positioning System (GPS) technology present a means of quantifying mechanical loading in a clinical environment with high ecological validity.
Emmerson, Hannah +2 more
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Diagonal compression testing of masonry under fatigue loading and high static loads
Engineering Failure Analysis, 2023 Underground railway operations pose a significant impact on overlying, highly sensitive historic masonry structures. Here, the process of structural assessment involves fatigue actions, through induced ground-borne vibrations, from operating underground railways.
Georgios Karanikoloudis +2 more
openaire +2 more sources
Precoded FIR and Redundant V-BLAST Systems for Frequency-Selective MIMO Channels [PDF]
, 2007 The vertical Bell labs layered space-time (V-BLAST) system is a multi-input multioutput (MIMO) system designed to achieve good multiplexing gain.
Chen, Chun-yang, Vaidyanathan, P. P.
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An Efficient DOA Estimation Algorithm Based on Diagonal-Symmetric Loading [PDF]
Mathematical Problems in Engineering, 2021 In order to solve the problem that the subspace-like direction of arrival (DOA) estimation performs poor due to the error of sources number, this paper proposes a new super-resolution DOA estimation algorithm based on the diagonal-symmetric loading (DSL). Specifically, orthogonality principle of the minimum eigenvector of the specific covariance matrix
Yangyang Xie, Biao Wang, Feng Chen
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A CLT on the SNR of Diagonally Loaded MVDR Filters [PDF]
IEEE Transactions on Signal Processing, 2012 This paper studies the fluctuations of the signal-to-noise ratio (SNR) of minimum variance distorsionless response (MVDR) filters implementing diagonal loading in the estimation of the covariance matrix. Previous results in the signal processing literature are generalized and extended by considering both spatially as well as temporarily correlated ...
Rubio, Francisco +2 more
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Channel Hardening-Exploiting Message Passing (CHEMP) Receiver in Large-Scale MIMO Systems [PDF]
, 2014 In this paper, we propose a MIMO receiver algorithm that exploits {\em channel hardening} that occurs in large MIMO channels. Channel hardening refers to the phenomenon where the off-diagonal terms of the ${\bf H}^H{\bf H}$ matrix become increasingly ...
Chockalingam, A., Narasimhan, T. Lakshmi
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Sparsest factor analysis for clustering variables: a matrix decomposition approach [PDF]
, 2017 We propose a new procedure for sparse factor analysis (FA) such that each variable loads only one common factor. Thus, the loading matrix has a single nonzero element in each row and zeros elsewhere.
A Stegeman +33 more
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MVDR Algorithm Based on Estimated Diagonal Loading for Beamforming [PDF]
Mathematical Problems in Engineering, 2017 Beamforming algorithm is widely used in many signal processing fields. At present, the typical beamforming algorithm is MVDR (Minimum Variance Distortionless Response). However, the performance of MVDR algorithm relies on the accurate covariance matrix. The MVDR algorithm declines dramatically with the inaccurate covariance matrix. To solve the problem,
Yuteng Xiao +4 more
openaire +1 more source