1)Bn()4Bm() 对基本单元 fm(n)=fm-i(n)+km8m-(n-1) z变换,得 8m (n)=k fm-1(n)+8m-1(n-1) F m1(=)+kn= F / F Gn(=)=knFn1(x)+n-(=) /G B B z+K Z Bn(=)=knBn1(=)+Bn(=)(2) Bn1()=Bn(2)- Ek B1(=)(3) 1 1 1 1 1 1 m m m m m m m m F z F z k z G z G z k F z z G z B m m 1 z B z 1) 0 0 / / F G 1 1 1 1 1 1 1 2 m m m m m m m m B z B z k z B z B z k B z z B z Bm1 z zBm z zkm Bm1 z 3 z 变换,得 1 1 1 1 1 1 m m m m m m m m f n f n k g n g n k f n g n 对基本单元