Text: Need all parts asap...
Consider the periodic discrete-time input signal x[n] = (-1).
a) Find its discrete-time Fourier series (DTFS) expression (find period N, ak's).
b) Using DTFS, compute its discrete-time Fourier transform, X(e^iw).
c) Now, consider a discrete-time LTI system with impulse response h[n] = u[n].
i) Find H(e^jw).
ii) Find Y(e^jw).
iii) Find y[n].
In your plots, be sure to show all critical values and variables. In your calculations, you must show all your steps clearly! Otherwise, no grades will be given.