Blind source separation of signals with known alphabets using ε-approximation algorithms.
Qingyu LiEr-Wei BaiZhi DingPublished in: IEEE Trans. Signal Process. (2003)
Keyphrases
- approximation algorithms
- blind source separation
- independent component analysis
- blind separation
- source separation
- non stationary
- special case
- np hard
- vertex cover
- source signals
- worst case
- adaptive particle swarm optimization
- negative matrix factorization
- mixing matrix
- approximation ratio
- algebraic equations
- eigenvalue decomposition
- independent components
- constant factor approximation
- sparse representation
- undirected graph
- speech signal
- principal component analysis
- lower bound
- eeg data
- factor analysis