Truncated Beam Sweeping for Spatial Covariance Matrix Reconstruction in Hybrid Massive MIMO.
Yinsheng LiuHongtao DuanXi LiaoPublished in: CoRR (2022)
Keyphrases
- covariance matrix
- covariance matrices
- principal component analysis
- sample size
- correlation matrix
- positive definite
- geometrical interpretation
- gaussian mixture
- objective function
- eigenvalues and eigenvectors
- multivariate gaussian
- pseudo inverse
- eigendecomposition
- image reconstruction
- symmetric matrix
- mahalanobis distance
- transformation matrix
- log euclidean
- dimensionality reduction
- feature vectors
- feature extraction