SSP-L 2. Consider the sampling and reconstruction configuration in Fig. SSP-L2(4). The output y() of the ideal reconstruction can be found by sending the sampled signal (1)x(1)p(1) through an ideal low-pass

filter with frequency response Hje) in Fig. SSP-L2(b). (a) (1) Letx()-1+cos (15m) and sampling period 7= 0.1 sec. (H)-Sketch Xa) and determine if allaring occurs. Show how you would avoid allasing (i.e. determine the Nyquist rate and sketch the corresponding X), then comment on your result.) (1)-Determine the expression for y(i). (b) LetX()=1/(a+1) and the sampling period 7-1 sec. Sketch the amplitude spectra Xa) and X), and determine if aliasing occurs (justify your answer.) Sample at 7 201 Ideal reconstruction Fig. SSP-L2. Hija) -0.500, (b) T 0.500,