December 2005
Intermediate to advanced
475 pages
12h 6m
English
Content preview from Signals and Systems
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6.9 z-TRANSFORM OF UNIT STEP SEQUENCE
The unit step sequence can be represented by
The z-transform of x(n) = anu(n) is given by
If a = 1, X(z) becomes
The ROC is | z | > 1 shown in Fig. 6.5
Fig. 6.5 ROC
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