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1. |
If Z{x1(n)}=X1(z) and Z{x2(n)}=X2(z) then what is the z-transform of correlation between the two signals? |
A. | X<sub>1</sub>(z).X<sub>2</sub>(z<sup>-1</sup>) |
B. | X<sub>1</sub>(z).X<sub>2</sub>(z<sup>-1</sup>) |
C. | X<sub>1</sub>(z).X<sub>2</sub>(z) |
D. | X<sub>1</sub>(z).X<sub>2</sub>(-z) |
Answer» C. X<sub>1</sub>(z).X<sub>2</sub>(z) | |