Spectral efficiency of massive MIMO networks with pilot contamination and channel covariance matrix estimation.
Xiaoqing ZhangShangbin WuShanshan YuJu LiuPublished in: IET Commun. (2019)
Keyphrases
- covariance matrix
- estimation error
- covariance matrices
- fading channels
- principal component analysis
- cellular networks
- mimo systems
- sample size
- ofdm system
- positive definite
- multivariate gaussian
- estimation algorithm
- multiple input
- multiple input multiple output
- correlation matrix
- mahalanobis distance
- maximum likelihood estimation
- eigenvalues and eigenvectors
- eigendecomposition
- channel estimation
- gaussian mixture
- mimo ofdm
- geometrical interpretation
- cma es
- wireless channels
- wireless communication
- communication systems
- multipath
- maximum likelihood
- evolutionary algorithm
- objective function
- density estimation
- model selection
- computational complexity
- feature selection