


Consider the following DT periodic signal: in X(t) = sin 2πη) 10 + cos 30) a)...
Problem 6: I7 Points For the following periodic signal, x(t) 4OSesi a) Express the signal exponent +cos(9t) +2cos(15t) al in complex exponential Fourier series form. 13 r series coefficients and sketch the spectral line. [2 Find the fundamental frequency and identilY the harmonics in the signal. 12) Solution
Problem 6: I7 Points For the following periodic signal, x(t) 4OSesi a) Express the signal exponent +cos(9t) +2cos(15t) al in complex exponential Fourier series form. 13 r series coefficients and sketch the...
Consider the Fourier Series for the periodic function: x(t) = 4+ 4 cos(5t)+ 6 sin (10t) a.) Find the Fourier coefficients of the exponential form. b.) Find the Fourier Coefficients of the combined trigonometric form. c.) Sketch the one-sided power spectral density
1. (45 pts) DT FS. Find the fundamental period and the Fourier Series (FS) spectral coefficients for these periodic signals. Sketch the spectrum in magnitude and phase. Express each x[n] as the sum of the spectral coefficients for k = [0, N-1]. a. ?1[?] = ???( ? 3 ?) b. ?2 [?] = cos ( ? 3 ?) + sin( ? 4 ?) c. ?3[?]
Please show all your works.
Thanks.
4.(25 pts) Consider a periodic function X(t) = Sin(3t). Cos . Express x(t) in Exponential Fourier Series form and calculate Fourier Coefficients Co, C1, C-1,C2, C-2 ... etc (as many Fourier Coefficients as needed). What is the fundamental frequency (wo) of the x(t)? (hint: Use Euler's formula to express Sin(.) and Cos(.) in exponential forms)
For the continuous-tine periodic signal 4nt (-), 2mt x(t) = 2 + cos (-) + sin determine the fundamental frequency wo and the Fourier series coefficients ak such that kwot k=-oo
Consider the Fourier series for the periodic function: x(t)= 3 + 5cos t +6 sin (2t) a.) Find the Fourier Coefficients of the exponential form b.) Find the Fourier Coefficients of the combined trigonometric form c.) Find the normalized average power using the Fourier series coefficient d.) Sketch the one sided Power Spectral Density
l, f) is a periodic signal with period f(t)-n(t)-u(t-t/2 ) for 0 2π a.) Find the exponential Fourier series of f() and sketchf). What is the fundamental radian frequency. b.) Evaluate and sketch |Dml, the magnitude of the Fourier series coefficients vs.o in the range of -4s n S4 c.) Evaluate and sketch the phase angle of D, vs. co in the same range (-4S n S4) d.) Find the signal average power e) Find the approximate average power of...
2. Consider the following sequence x(n) = cos (2n/3)sin(2ton/5). a. Is the sequence periodic? If yes, what is the period? If no, why not? Note: you need to show your work analytically but you can verify that your answer is correct by sketching the sequence using Matlab b. Find and sketch the complex exponential Fourier series coefficients (Magnitude and Phase). Verify using Matlab. Include code and graphics.
TT 1) Consider the following signal x(t) = -5 + 9 sin (61t + 3 cos(12nt) + V V7ej24nt a) (5 points) Write the complex exponential Fourier series for x(t). b) (5 points) Sketch the amplitude and phase spectra of x(t). c) (5 points) Find the total average power of the signal.
Question 3 (30 points) Consider the signals defined below: *:(t) = cos(2) xz(t) = cos(4+) a) Determine the fundamental period for each signal. b) Determine the fundamental period and fundamental frequency of the signal: y(t) = x;(C)x(0) (t) and x2(c) when the fundamental frequency is c) Determine the Fourier Series coefficients of defined as determined in part (b). d) Using Parseval's relation, determine the power of xy(t) and xy(t) e) Determine and plot the Fourier Series Coefficients of y(t). Show...