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

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Duplicy, J. Louveaux, Jérôme [UCL] Vandendorpe, Luc [UCL]

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. © 2005 IEEE.

Document type Communication à un colloque (Conference Paper) – Présentation orale avec comité de sélection
Publication date 2005
Language Anglais
Conference "IEEE International Conference on Communications (ICC'05)", Seoul, Korea (du 16/05/2005 au 20/05/2005)
Peer reviewed yes
issn 0536-1486
Host document "Proc. IEEE International Conference on Communications (ICC'05)"- p. 2026-2030 (ISBN : 0-7803-8939-5)
Publication status Publié
Affiliation UCL - SST/ICTM/ELEN - Pôle en ingénierie électrique
Keywords Downlink ; Space division multiple access ; Decoders ; Multiple input multiple output (MIMO) ; Power constraint ; Orthogonal frequency division multiplexing ; MIMO ; Multi-user ; OFDM ; SDMA ; Channel capacity ; Decoding ; Iterative methods ; Optimization
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Bibliographic reference Duplicy, J. ; Louveaux, Jérôme ; Vandendorpe, Luc. Optimization of linear pre/decoders for multi-user closed-loop MIMO-OFDM.IEEE International Conference on Communications (ICC'05) (Seoul, Korea, du 16/05/2005 au 20/05/2005). In: Proc. IEEE International Conference on Communications (ICC'05), 2005, p. 2026-2030
Permanent URL http://hdl.handle.net/2078.1/136994