The pulsetransferfunction matrix of linear discrete-time multivariable systems is often non-diagonal. This shows that there is coupling between the input and output of systems.
线性离散时间多变量系统的脉冲传递矩阵往往不是对角线形的矩阵，这表明系统的输入输出存在耦合。
2
A function space model and corresponding pulsetransferfunction matrix of multirate digital control systems are constructed by using function space method and two different lifting techniques.