STBC MC-CDMA systems: Comparison of MMSE single user and multiple user detection schemes 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 multi-carrier code division multiple access (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 multiple input multiple output (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 is 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. Finally, the very good behaviour of MMSE space-time block coding (STBC) MC-CDMA systems is confirmed over the realistic multi element transmit receive antennas (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. STBC MC-CDMA systems: Comparison of MMSE single user and multiple user detection schemes over Rayleigh and MIMO METRA channels. European Transactions on Telecommunications, 2004, 15 (3), pp.275-281. ⟨10.1002/ett.973⟩. ⟨hal-00283525⟩