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The transfer function of digital causal system is given as follows: H(z)=1z110.2z10.15z2. Draw cascade form, parallel form realization
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H(z)=1z110.2z10.15z2

=[(1z1)(10.5z1)][11+0.3z1)]

Cascade form can be given as :-

enter image description here

Parallel form:-

H(z)=12110.2z10.15z2=z(21)z20.2z0.15H(z)z=(z1)(z0.5)(2+0.3)

Now,

H(2)z=Az0.5+Bz+0.3A=H(z)2(z0.5)|z=0.5=0.625B=z1(20.5)(2+0.3)|z=0.3=0.310.30.5=1.625

Parallel form can be given as

enter image description here

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