MIMO通信系统下行链路预编码仿真研究

Study of precoding simulation in MIMO wireless communication system

MIMO无线蜂窝通信系统是一种在同一时域和频域中向多个用户提供传输的系统。多用户MIMO技术利用无线通信系统中用户的独立性来增加整个系统的通信性能,从而实现多用户分集和复用。针对单天线用户的线性预编码和针对多天线用户的线性预编码,对联合迫零、迫零和最小均方误差预编码算法进行了仿真和性能对比。对实际通信系统设计具有指导意义。

MU-MIM（）（multi-user multiple-input multiple-output, multi-user MIMO） wireless cellular communication system is the one that uses same time-frequency resources to provide transmission of multiple users. MU-MIM（） technology uses the in dependence of user in the whole system to increase communication performance, so as to achieve more users diversity and multi plex. Aiming at linear precoding of the single antenna user or users, the union ZF,ZF and MMSE precoding algorithm and per formance is simulated and compared. It provides guiding refereces for practical communication system design.