8. Now, you decide to transfer one signal s(x) (i.e., s(x) = )and make the f(x) as the carrie wave. Based on the modulation technique, you can create one new signal r(x) containing the s(x) and f(x). Please describe the formulation of the r(x) in the frequency domain. (A)(B) (C) (D)

9.After your analysis, you find that it is not practical to analyze the phenomenon in thefrequency domain in the continuous time. Afterward, you decide to use Discrete Fourier Transform(DFT) instead. Assume you sample the new created r(x) signal every 2 unit time and collect 4 datafrom time zero (ie., x are 0, 2, 4, and 6 sequentially.) If you know that the DFT can be formulated aswhere the L is the length of the samples and the n indicates the sample number. Please select the rightfollowing result of your analysis in the frequency domain after applying your derived DFT.(A) ；(B) ；(C)；(D)；

8. Now, you decide to transfer one signal s(x) (i.e., s(x) = )and make the f(x) as the carrie wave. Based on the modulation technique, you can create one new signal r(x) containing the s(x) and f(x). Please describe the formulation of the r(x) in the frequency domain.
(A)
(B)
(C)
(D)

相關試題

相關試卷