改进的MU-MIMO线性预编码算法  

Improved MU-MIMO linear precoding algorithm

作　　者：张继荣[1] 刘亚丽[1] 江驰[1] 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《西安邮电大学学报》2014年第6期58-61,共4页Journal of Xi’an University of Posts and Telecommunications

摘　　要：针对MU-MIMO系统中多用户天线之间存在的干扰问题,提出一种块状对角化-最小均方误差(BDMMSE)算法。该算法是在信噪比一定的情况下,先用BD预编码算法在发送端消除多用户之间的干扰,然后在接收端使用MMSE信号检测技术对每个用户多个天线之间的干扰进行消除,最终使误比特率达到最小。仿真结果表明,改进的预编码算法比单一的预编码算法的BER性能有显著提高。In order to solve the problem of interference existing between multi-user antennas at MU-MIMO system,a BD-MMSE precoding algorithm is proposed in this paper.Under certain SNR conditions,a BD precoding algorithm is used to eliminate interference between multiple users at the sender,the MMSE detection technique is then used for each of the plurality of antennas between users to eliminate the interference at the receiver,and finally the bit error rate is minimized.Simulation experiments show that the improved pre-coding algorithm can significantly improve BER performance than the single pre-coding algorithm.

关 键 词：IEEE802.11ac协议 MU-MIMO空间调度算法 最小均方误差检测 块状对角化算法 

分 类 号：TN914.3[电子电信—通信与信息系统]