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

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 (S...

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Bibliographic Details
Main Authors: Duplicy, J., Louveaux, J., Vandendorpe, L.
Format: Conference Proceeding
Language:English
Subjects:
Bit error rate
Constraint optimization
Downlink
Iterative decoding
MIMO
Multiaccess communication
OFDM
Receiving antennas
Space technology
Transmitters
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Summary: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.
ISSN:1550-3607
1938-1883
DOI:10.1109/ICC.2005.1494694