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应用科学学报

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MIMO MC-CDMA的简化CMOE递归自适应多用户检测

赵发勇1，2, 酆广增1

  

  1. 1．南京邮电大学 通信与信息工程学院，江苏 南京 210003；
    2．阜阳师范学院 物理系，安徽 阜阳 236032

  • 收稿日期:2007-12-24 修回日期:2008-05-29 出版日期:2008-09-27 发布日期:2008-09-27
  • 通信作者: 赵发勇

Simplified CMOE Recursive Adaptive Multiuser Detection for MIMO MC-CDMA

ZHAO Fa-yong1，2, FENG Guang-zeng 1   

  1. 1. Department of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China；
    2. Department of Physics, Fuyang Normal College, Fuyang 236041, China

  • Received:2007-12-24 Revised:2008-05-29 Online:2008-09-27 Published:2008-09-27
  • Contact: ZHAO Fa-yong

摘要：

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.

关键词:

空时编码, 多输入多输出多载波码分多址, 约束最小输出能量, 最优步长半盲自适应信道估计, 多用户检测

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

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