HW7.1 (A DTFS Puzzle) Consider a discrete-time signal x : Z → R having the following the properties: • • • a[n+4l] = x[n], VI, n∈Z . 2 Σα[n] = 2. n=-1 Σ(−1)"x[n] = 4. n=-1 2 • Σ x[n] cos [ẩn] = 2 Σ x[n] sin [n] = = 0. n=-1 n=-1 (a) Determine the complex exponential Fourier series coefficients X-1, X0, X1, and X2 for the signal x. From the coefficients, determine and provide a well- labeled plot for the signal x. (b) Based on your results from part (a), determine the fundamental period p and fundamental frequency wo of the signal x. Express x in terms of its DTFS co- efficients and complex exponentials of appropriate frequencies, and identify each coefficient and its corresponding harmonic frequency.
HW7.1 (A DTFS Puzzle) Consider a discrete-time signal x : Z → R having the following the properties: • • • a[n+4l] = x[n], VI, n∈Z . 2 Σα[n] = 2. n=-1 Σ(−1)"x[n] = 4. n=-1 2 • Σ x[n] cos [ẩn] = 2 Σ x[n] sin [n] = = 0. n=-1 n=-1 (a) Determine the complex exponential Fourier series coefficients X-1, X0, X1, and X2 for the signal x. From the coefficients, determine and provide a well- labeled plot for the signal x. (b) Based on your results from part (a), determine the fundamental period p and fundamental frequency wo of the signal x. Express x in terms of its DTFS co- efficients and complex exponentials of appropriate frequencies, and identify each coefficient and its corresponding harmonic frequency.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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![HW7.1 (A DTFS Puzzle) Consider a discrete-time signal x : Z → R having the
following the properties:
•
•
x[n+41] = x[n], \l, n ≤ Z .
2
Σ x[n] = 2.
n=-1
2
Σ(-1) x[n] = 4.
n=-1
2
2
±x[n] cos [n] = x[n] sin [n] =
Σ
n=-1
Σ
n=-1
= 0.
(a) Determine the complex exponential Fourier series coefficients X-1, X0, X₁,
and X2 for the signal x. From the coefficients, determine and provide a well-
labeled plot for the signal x.
(b) Based on your results from part (a), determine the fundamental period p and
fundamental frequency wo of the signal x. Express x in terms of its DTFS co-
efficients and complex exponentials of appropriate frequencies, and identify
each coefficient and its corresponding harmonic frequency.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5ec99b66-acf3-492e-a494-05a1857e861e%2F2ac1b410-9485-4c16-920a-a58828b6e22e%2Fjrtatc7_processed.png&w=3840&q=75)
Transcribed Image Text:HW7.1 (A DTFS Puzzle) Consider a discrete-time signal x : Z → R having the
following the properties:
•
•
x[n+41] = x[n], \l, n ≤ Z .
2
Σ x[n] = 2.
n=-1
2
Σ(-1) x[n] = 4.
n=-1
2
2
±x[n] cos [n] = x[n] sin [n] =
Σ
n=-1
Σ
n=-1
= 0.
(a) Determine the complex exponential Fourier series coefficients X-1, X0, X₁,
and X2 for the signal x. From the coefficients, determine and provide a well-
labeled plot for the signal x.
(b) Based on your results from part (a), determine the fundamental period p and
fundamental frequency wo of the signal x. Express x in terms of its DTFS co-
efficients and complex exponentials of appropriate frequencies, and identify
each coefficient and its corresponding harmonic frequency.
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