摘要
多输入多输出系统利用多根发射和接收天线,可以在不增加系统带宽的前提下显著提高无线通信系统的传输速率和链路可靠性,是未来移动通信系统的关键技术之一.为了进一步满足通信的要求,在多输入多输出通信系统中使用预编码技术利用发射端信道状态信息,目的是降低接收端设备的复杂度并消除用户间的干扰.仿真结果表明,在单用户预编码中最小均方误差算法的性能好;多用户预编码中规则化信道反转的性能好,且系统误码率显著降低.
Multiinput multioutput (MIMO) system,which uses multiple transmitting and receiving antennas,can significantly improve the transmission rate and link reliability of wireless communication system without increasing system bandwidth,and is one of the key technologies of future mobile communication system.In order to further meet the requirements of communication,the transmitter channel state information (CSI) is used in the MIMO communication system to further reduce the complexity of equipment at the receiving end and eliminate interference between users.The simulation results show that,in the singleuser precoding,the minimum mean square error (MMSE) algorithm performs well.The performance of regular channel inversion in multiuser precoding is good and the bit error rate of the system is significantly reduced.
作者
宋兴凯
SONG Xingkai(School of Physics and Electronic Information,Yanan University,Yanan Shaanxi 716000)
出处
《宁夏师范学院学报》
2019年第7期61-65,71,共6页
Journal of Ningxia Normal University
关键词
多输入多输出系统
迫零预编码
最小均方误差预编码
信道反转
Multiinput multioutput system
Zero driven precoding
Minimum mean square error precoding
Channel inversion
