96下信號與系çµ&plusmn

96下信號與系çµ&plusmn

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Signals and Systems Midterm 10:20a.m. ~ 12:20p.m., May 2, Fri., 2008 z Closed book, but open 1 sheet (both sides, 2 pages) of personal notes of A4 size z Total score: 120 z Total 4 pages in one B4 sheet 1. [10] Consider a system H to be tested as being memoryless , causal , linear , time invariant , and invertible . Three signals 1 () x t , 2 x t , and 3 x t are sent to the system, and the corresponding output signals 1 y t , 2 y t , and 3 y t are obtained as shown in Figure 1. Based on the three input-output pairs, is it possible to determine each of the five properties for system H ? If yes, what is it? If no, why? Justify your answer. Figure 1 2. Consider a system as shown in Figure 2, where ht is the impulse response of the LTI sub-system in the block, and 2D is the operation of time delay for 2 units. Figure 2 h ( t ) 2D + x ( t ) y ( t ) 1 2 3 4 5 1 2 0 x ( t ) 12345 1 2 0 h ( t ) H H H 1 2 3 4 5 1 2 3 0 4 x 1 ( t ) 1 2 3 4 5 1 2 3 0 4 x 2 ( t ) 1 2 3 4 5 1 2 3 0 4 x 3 ( t ) 1 2 3 4 5 1 2 3 0 4 y 1 ( t ) 1 2 3 4 5 1 2 3 0 4 y 2 ( t ) 1 2 3 4 5 1 2 3 0 4 y 3 ( t )
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
(a) [4] Plot the impulse response of the overall system. (b) [7] Plot the output ( ) y t of the system for input ( ) x t shown in Figure 2.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

96下信號與系çµ&plusmn

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online