Turbo estimation of channel and symbols in precoded MIMO systems
Scaglione, A.; Vosoughi, A.
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP apos;04). IEEE International Conference on
Volume 4, Issue , 17-21 May 2004 Page(s): iv-413 - iv-416 vol.4
Digital Object Identifier   10.1109/ICASSP.2004.1326851
Summary: We consider a block fading frequency selective multi-input multi-output (MIMO) channel in additive white Gaussian noise (AWGN). The channel input is a training vector superimposed on a linearly precoded vector of Gaussian symbols. To achieve a better performance over the conventional least-squares (LS), we utilize the linear mean square error (LMMSE) symbol estimate to improve the initial LS estimate and update the symbol estimation accordingly. We provide the guidelines to design training which minimizes the MSE of the initial LS estimate.

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