Abstract:

This paper proposes a recursive adaptive algorithm of joint channel estimation and multi-user detection based on a simplified constraint minimum output energy (CMOE) criterion for space-time block codes (STBC) MIMO MC-CDMA. It solves the adaptive value of the variable diagonal loading. Optimal step-size semi-blind adaptive channel estimation is proposed for increasing convergence rate and accuracy. The channel estimation error and BER performances of different algorithm under different environments are compared.

Key words: space-time block codes (STBC), MIMO MC-CDMA, constraint minimum output energy (CMOE), optimal step-size semi-blind adaptive channel estimation, multi-user detection