Optimization of linear pre-decoders for multi-user closed-loop MIMO-OFDM

J Duplicy, J Louveaux… - … , 2005. ICC 2005. 2005, 2005 - ieeexplore.ieee.org
IEEE International Conference on Communications, 2005. ICC 2005. 2005, 2005ieeexplore.ieee.org
This paper deals with a multi-user downlink MIMO-OFDM scheme with perfect channel
knowledge at both the transmit and receive sides. The objective is to optimize the average
BER while fulfilling each user's rate and satisfying a global transmit power constraint. Space
division multiple access (SDMA) is investigated and three new iterative schemes are
proposed to compute the linear pre-decoders. The results exhibit, inter alia, that
orthogonalizing the channels does not lead to the best results.
This paper deals with a multi-user downlink MIMO-OFDM scheme with perfect channel knowledge at both the transmit and receive sides. The objective is to optimize the average BER while fulfilling each user's rate and satisfying a global transmit power constraint. Space division multiple access (SDMA) is investigated and three new iterative schemes are proposed to compute the linear pre-decoders. The results exhibit, inter alia, that orthogonalizing the channels does not lead to the best results.
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