Performance of MMSE STBC MC-CDMA over Rayleigh and MIMO METRA channels

Jean-Michel Auffray (1) , Jean-Yves Baudais (1) , Jean-François Hélard (1)

1 IETR - Institut d'Electronique et de Télécommunications de Rennes

The performance of MMSE Single-user Detection (SD) and Multi-user Detection (MD) STBC MC-CDMA systems are analysed and compared in the case of two transmit antennas and one or two receive antennas over Rayleigh fading channels and then over the stochastic MIMO METRA channel model. With two transmit and one receive antennas, MD achieves a gain of roughly 1 dB for non-full load systems while the same performance are obtained with MD and SD for full load systems. Besides, with two receive antennas, we present a sub-optimal and an optimal MMSE SD MIMO MC-CDMA schemes, this last one offering a very good performance/complexity trade-off. Finally, the very good behaviour of MMSE STBC MC-CDMA systems is confirmed over the realistic METRA MIMO channel.

Domaines: Autre; Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Jean-Michel Auffray, Jean-Yves Baudais, Jean-François Hélard. Performance of MMSE STBC MC-CDMA over Rayleigh and MIMO METRA channels. Workshop on Multi-­Carrier Spread-­Spectrum and Related Topics, Sep 2003, Germany. pp.1-10. ⟨hal-00283659⟩