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2.6 Let x(t) and y(t) be two periodic signals with period To, and let X, and...
Let x(t) and y(t) be periodic signals with fundamental period T and Fourier coefficients αn and βn, respectively. Use the properties of Fourier series and find the Fourier series coefficients of the following signals in terms of@n, βn, or both. a) V,(t) = x(t-to) + x(t + to) b) yb (t) = 2x(t-1) + 3y(t-1) c) ye(t) = x(-t) + x(-t-to) d) ya(t)=x(t)y(t) 1.
Let x[n] and y[n] be periodic signals with common period N, and let z[n] = { x[r]y[n – r) r=<N> be their period convolution. Let z[n] = sin(7") and y[n] = { . 0 <n<3 4 <n <7 Asns? be two signals that are periodic with period 8. Find the Fourier series representation for the periodic convolution of these signals.
3. Let x, and yn be the Fourier series coefficients of (t) and y(t), respectively Assuming the period of r(t) is To. express y, in terms of (a) y(t)-x(at), where a 0. dt 3. Let x, and yn be the Fourier series coefficients of (t) and y(t), respectively Assuming the period of r(t) is To. express y, in terms of (a) y(t)-x(at), where a 0. dt
Q1) For the periodic signals x() and ) shown below: x(t) YCO y(t) a) Find the exponential Fourier series for x(t) and y). b) Sketch the amplitude and phase spectra for signal x(). c) Use Parseval's theorem to approximate the power of the periodic signal x() by calculating the power of the first N harmonics, such that the strength of the Nth harmonic is 10% or more of the power of the DC component. Q1) For the periodic signals x()...
Question 5: [Basic] Consider three periodic signals xi(t) and x2(t). xi(t) has period 2 and its Fourier series coefficients are ai = a_1 = 2 and Ak = 0 for all k + +1. x2(t) has period 3 and its Fourier series coefficients are di = j, a-1 = -j and Ak = 0 for all k # £1. Answer the following questions. 1. Plot xi(t) and x2(t). 2. Suppose y(t) = xi(t) + 22(t). Find out the Fourier series...
please 3.59. (a) Suppose x[n] is a periodic signal with period N. Show that the Fourier series coefficients of the periodic signal are periodic with period N. (b) Suppose that x() is a periodic signal with period T and Fourier series coeffi cients a with period N. Show that there must exist a periodic sequence g[n] such that (c) Can a continuous periodic signal have periodic Fourier coefficients? 3.59. (a) Suppose x[n] is a periodic signal with period N. Show...
Let a periodic signal x(t) with a fundamental frequency ??e2? have a period 4.6 (a) Plot x(t), and indicate its fundamental period To (b) Compute the Fourier series coefficients of x(t) using their integral (c) (d) Answers: x(t) is periodic of fundamental period definition. Use the Laplace transform to compute the Fourier series coefficients Xk. Indicate how to compute the dc term. Suppose that y(t) = dx(t)/dt, find the Fourier transform of x(t) by means of the Fourier series coefficients...
Q4 [10 pts] Let x[n] = {1, Osns 7 10. 8 00 be a periodic signal with fundamental period N = 10 and Fourier series coefficients ag. Also, let 8[n] = x[n] - x[n - 1). (a) Show that g(n) has a fundamental period of 10. (b) Determine the Fourier series coefficients of g[n].
Signals and systems Problem 2 (20 points) Let -S2t+1, Osts1 x(t) = -t +4, 1sts 3 be a periodic signal with fundamental period T=3 and Fourier coefficients ar a. Determine the value of ao. b. Determine ak, k = 0, by: 1. first finding the Fourier coefficients of ii.then using the appropriate property of the continuous-time Fourier series. c. Use the result of part (b) to express the Fourier transform of x().
The Fourier series of a periodic signal s(2) of period T can be expressed as k s(x) = cxexp ( 21 - where the coefficients Ck are given by 7/2 CR 1 T -T/2 | $(z) exp (-27 k -27=cdc T (i) Consider s(2) of period T = 6 and amplitude A= 2: 8(z) = 2 * |< T 2 Compute the Fourier coefficients ok. (ii) Use the identities exp(Trik) + exp(-rik) cos(Tk) = 2 sin(Tk) exp(Trik) – exp(-rik) 2i...