1. G. Auer, Channel estimation in two dimensions for OFDM Systems with Multiple Transmit antennas, GLOBECOM 2003, San Francisco, USA, 2003.
2. A. Belouchrani, J.-F. Cardoso, Maximum likelihood source separation for discrete sources, in: EUSIPCO-94, Edinburgh, 1994.
3. An analysis of pilot symbol assisted modulation for Rayleigh fading channels;Cavers;IEEE Trans. Veh. Technol.,1991
4. Christian Sgraja, Juergen Lindner, EM-based decision-directed channel estimation for OFDM: a new interpretation, in: Tenth International OFDM-Workshop 2005, Hamburg.
5. F. Dellaert, The Expectation Maximization algorithm, Technical Report, GIT, Feb. 2002.