Off-grid DOA estimation with nonconvex regularization via joint sparse representation.
Qi LiuHing-Cheung SoYuantao GuPublished in: Signal Process. (2017)
Keyphrases
- sparse representation
- doa estimation
- joint optimization
- dictionary learning
- norm minimization
- sparse coding
- direction of arrival
- canonical correlation analysis
- image classification
- convex optimization
- face recognition
- compressive sensing
- regularized least squares
- image patches
- signal processing
- objective function
- dimensionality reduction
- random projections
- negative matrix factorization
- image representation
- sparse learning
- high dimensional data
- regularization term
- piecewise smooth
- multiscale
- similarity measure
- dimension reduction
- high dimensional
- neural network
- data sets