将约束最小输出能量(CMOE)准则应用于空时编码多输入多输出多载波码分多址(STBC MIMO MC—CDMA)系统,提出一种基于简化CMOE的联合信道估计与信号检测的递归自适应算法,解决了可变对角因子的自适应取值问题,所给出的最优步长半盲自适应信道估计可以提高信道估计的准确性和收敛速度.比较了不同环境下信道估计的误差和各种算法的误码率性能.
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.