Interference-free multi-user MIMO-OFDM

A multi-user downlink MIMO-OFDM scheme is considered. Perfect channel knowledge is assumed at the base station and linear processing is used at both the transmit and receive sides. The objective is to optimize the mean BER of the system while satisfying a transmit power constraint and fulfilling eac...

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Bibliographic Details
Main Authors: Duplicy, J., Louveaux, M., Vandendorpe, L.
Format: Conference Proceeding
Language:English
Subjects:
Base stations
Bit error rate
Downlink
Frequency division multiaccess
Interference constraints
MIMO
Multiaccess communication
OFDM
Receiving antennas
Transmitters
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Summary:A multi-user downlink MIMO-OFDM scheme is considered. Perfect channel knowledge is assumed at the base station and linear processing is used at both the transmit and receive sides. The objective is to optimize the mean BER of the system while satisfying a transmit power constraint and fulfilling each user's rate. FDMA and SDMA are investigated. We show how the multi-user interference induced by SDMA can be annihilated and exhibit that this multiple access technique should be preferred to FDMA.
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2005.1415918