![Q4 [10 pts] Let x[n] = {1, Osns 7 10. 8 00 be a periodic signal with fundamental period N = 10 and Fourier series coefficient](http://img.homeworklib.com/questions/7ef8b360-c37a-11ec-b054-2bd3a0bc1689.png?x-oss-process=image/resize,w_560)
Homework Answers
3.59. (a) Suppose x[n] is a periodic signal with period N. Show that the Fourier series coefficie...
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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...
4. (20 pts) Consider the N-periodic square wave given by 1, 1 sns1 (a) (10 pts) What is the funda...
4. (20 pts) Consider the N-periodic square wave given by 1, 1 sns1 (a) (10 pts) What is the fundamental frequency of the signal an wheN- (b) (10 pts) Find the Fourier series coefficients X[o] and X of the signal xln when N
4. (20 pts) Consider the N-periodic square wave given by 1, 1 sns1 (a) (10 pts) What is the fundamental frequency of the signal an wheN- (b) (10 pts) Find the Fourier series coefficients X[o] and X...
Let x(t) = t, 0<t 1 and Fourier series coefficients a , be a periodic signal...
Let x(t) = t, 0<t 1 and Fourier series coefficients a , be a periodic signal with fundamental period of T 2 -t,-1t0 dz(t) a) Sketch the waveform of r(t)d3 marks) b) Calculate ao (3 marks) c) Determine the Fourier series representation of gt)(4 rks) d) Using the results from Part (c) and the property of continuous-time Fourier series to dr(t) determine the Fourier series coefficients of r(t) (4 marks)
Let a periodic signal x(t) with a fundamental frequency ??e2? have a period 4.6 (a) Plot...
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...
Problem 2 (20 points) Let (2t +1, Ostsi x() +4 st 3 be a periodic signal...
Problem 2 (20 points) Let (2t +1, Ostsi x() +4 st 3 be a periodic signal with fundamental period T=3 and Fourier coefficients ar. a. Determine the value of an b. Determine ax, k 0, by: 1.first finding the Fourier coefficients of CID 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 (t).
2.6 Let x(t) and y(t) be two periodic signals with period To, and let X, and...
2.6 Let x(t) and y(t) be two periodic signals with period To, and let X, and yn denote the Fourier series coefficients of these two signals. Show that 7. Le***0*n di = § 00 2.7 Show that for all periodic physical signals that have finite power, the coefficients of the Fourier series expansion x,, tend to zero as n → .
Problem 1 (20 pts) Suppose that x(t) = e 2 for 0 st <3 and is...
Problem 1 (20 pts) Suppose that x(t) = e 2 for 0 st <3 and is periodic with period 3. a) Determine the fundamental frequency of this signal. (2 pts) b) Determine the Fourier series representation for this signal. (7 pts) c) Suppose that this signal is the input to an LTI system with impulse response h(t) = 5sinc(0.5t). Determine the Fourier series representation for the output signal y(t). Be sure to specify the fundamental period and all Fourier series...
2. If x(t) is a real periodic signal with fundamental period T and Fourier series coefficients...
2. If x(t) is a real periodic signal with fundamental period T and Fourier series coefficients ak, show that if r(t) is even, then its Fourier series coefficients must be real and even. [10 points]
(b) Let X(ju) denote the Fourier transform of the signal r(t) shown in the figure x(t) 2 -2 1 2 Using the properties of the Fourier transform (and without explicitly evaluating X(jw)), ii. (5 pts)...
(b) Let X(ju) denote the Fourier transform of the signal r(t) shown in the figure x(t) 2 -2 1 2 Using the properties of the Fourier transform (and without explicitly evaluating X(jw)), ii. (5 pts) Find2X(jw)dw. Hint: Apply the definition of the inverse Fourier transform formula, and you can also recall the time shift property for Fourier Transform. (c) (5 pts) Fourier Series. Consider the periodic signal r(t) below: 1 x(t) 1 -2 ·1/4 Transform r(t) into its Fourier Series...
20 points) Consider the periodic signal z(t) shown in the Figure below: X(t) 3 2 N....
20 points) Consider the periodic signal z(t) shown in the Figure below: X(t) 3 2 N. 0 1 2 3 4 5 6 A . Determine the fundamental period T and the fundamental frequency wo. B. Compute the Fourier Series coefficients and simplify the expression to its simplest form.
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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...
4. (20 pts) Consider the N-periodic square wave given by 1, 1 sns1 (a) (10 pts) What is the fundamental frequency of the signal an wheN- (b) (10 pts) Find the Fourier series coefficients X[o] and X of the signal xln when N
4. (20 pts) Consider the N-periodic square wave given by 1, 1 sns1 (a) (10 pts) What is the fundamental frequency of the signal an wheN- (b) (10 pts) Find the Fourier series coefficients X[o] and X...
Let x(t) = t, 0<t 1 and Fourier series coefficients a , be a periodic signal with fundamental period of T 2 -t,-1t0 dz(t) a) Sketch the waveform of r(t)d3 marks) b) Calculate ao (3 marks) c) Determine the Fourier series representation of gt)(4 rks) d) Using the results from Part (c) and the property of continuous-time Fourier series to dr(t) determine the Fourier series coefficients of r(t) (4 marks)
Problem 2 (20 points) Let (2t +1, Ostsi x() +4 st 3 be a periodic signal with fundamental period T=3 and Fourier coefficients ar. a. Determine the value of an b. Determine ax, k 0, by: 1.first finding the Fourier coefficients of CID 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 (t).
2.6 Let x(t) and y(t) be two periodic signals with period To, and let X, and yn denote the Fourier series coefficients of these two signals. Show that 7. Le***0*n di = § 00 2.7 Show that for all periodic physical signals that have finite power, the coefficients of the Fourier series expansion x,, tend to zero as n → .
Problem 1 (20 pts) Suppose that x(t) = e 2 for 0 st <3 and is periodic with period 3. a) Determine the fundamental frequency of this signal. (2 pts) b) Determine the Fourier series representation for this signal. (7 pts) c) Suppose that this signal is the input to an LTI system with impulse response h(t) = 5sinc(0.5t). Determine the Fourier series representation for the output signal y(t). Be sure to specify the fundamental period and all Fourier series...
2. If x(t) is a real periodic signal with fundamental period T and Fourier series coefficients ak, show that if r(t) is even, then its Fourier series coefficients must be real and even. [10 points]
(b) Let X(ju) denote the Fourier transform of the signal r(t) shown in the figure x(t) 2 -2 1 2 Using the properties of the Fourier transform (and without explicitly evaluating X(jw)), ii. (5 pts) Find2X(jw)dw. Hint: Apply the definition of the inverse Fourier transform formula, and you can also recall the time shift property for Fourier Transform. (c) (5 pts) Fourier Series. Consider the periodic signal r(t) below: 1 x(t) 1 -2 ·1/4 Transform r(t) into its Fourier Series...
20 points) Consider the periodic signal z(t) shown in the Figure below: X(t) 3 2 N. 0 1 2 3 4 5 6 A . Determine the fundamental period T and the fundamental frequency wo. B. Compute the Fourier Series coefficients and simplify the expression to its simplest form.
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