問題詳情

第一部分、填充題(請勿附加推導過程) 1. (Total=15%) Fig. 1 shows a series of operations that are used to separate randomprocesses into different frequency regions. The input random process x(t) isGaussian and white with a power spectral density function of Sx(f) = 2.

 Fig 1. Problem 1.
 The system functions of the various linear filters are as follows


We developed expressions that relate the various random processes that are inputsand outputs to linear filters. For example, recall that


Use the above properties, your knowledge of Fourier transforms, and your generalknowledge of the properties of random processes to answer the following  questions.
【題組】(a)  (4%) Considering y1(t), y2(t), y3(t), and y4(t), the random processes that arewide-sense stationary are____________

參考答案