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Blind multi-user receiver for MIMO-OFDM systems

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3 Author(s)
Abrudan, T.A. ; Signal Process. Lab., Helsinki Univ. of Technol., Espoo, Finland ; Sirbu, M. ; Koivunen, V.

This paper addresses the problem of blind multiuser equalization for OFDM. A vector constant modulus algorithm (VCMA) is developed for a specific multiple input-multiple output (MIMO) system. The proposed algorithm relies on a combined criterion, to cancel both intersymbol interference (ISI) and interuser interference (IUI). ISI is minimized by using a constant mean block energy criterion, while IUI is reduced by using a decorrelation criterion. Reliable performance is achieved with relatively fast convergence and small steady-state error, as well as low computational complexity.

Published in:

Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on

Date of Conference:

15-18 June 2003