Keyphrases
- gaussian mixture
- spectrum sensing
- cognitive radio networks
- mixtures of gaussians
- cognitive radio
- em algorithm
- closed form
- probability density function
- gaussian mixture model
- covariance matrix
- density estimation
- mixture model
- expectation maximization
- signal to noise ratio
- noise model
- gaussian densities
- frequency band
- wireless communication
- feature vectors
- mobile devices
- machine learning