Digital Signal Processing Reference
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Y(z)
Y(z )
X(z)
A 0 (z 2 )
B 0 (z 3 )
Σ
X(z)
Σ
z 1
z 1
A 1 (z 2 )
B 1 (z 3 )
Σ
z 1
B 2 (z 3 )
( a )
( b )
Figure 6.5 Polyphase structures of FIR filters.
h(0)
X(z)
h(2)
h(4)
h(6)
h(8)
Y(z)
z 2
z 2
Σ
z 2
z 2
Σ
Σ
Σ
z 1
h(7)
h(5)
h(3)
h(1)
Figure 6.6 Polyphase realization of an FIR filter H 1 (z) .
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