Joint Symbol Detection and Channel Estimation for MIMO-OFDM Systems via the Variational Bayesian EM Algorithm.
Xiaoying ZhangDe-Gang WangJi-Bo WeiPublished in: WCNC (2008)
Keyphrases
- em algorithm
- expectation maximization
- channel estimation
- incomplete data
- mixture model
- multipath
- maximum likelihood
- generative model
- parameter estimation
- gaussian mixture model
- orthogonal frequency division multiplexing
- communication systems
- ofdm system
- probability density function
- log likelihood
- fading channels
- hyperparameters
- probabilistic model
- hidden variables
- maximum a posteriori
- unsupervised learning
- bayesian framework
- image segmentation
- image sequences
- density estimation
- missing values