Consider a sequence x[n] and its discrete-time Fourier transform X(e j ). The following is known: x[n]
Question:
Consider a sequence x[n] and its discrete-time Fourier transform X(ejω). The following is known:
x[n] is real,
x[0] = 0,
x[1] > 0,
|X(ejω)|2 = 5/4 – cosω.
Determine two distinct sequences x1[n] and x2[n] consistent with the given information.
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Related Book For
Discrete Time Signal Processing
ISBN: 978-0137549207
2nd Edition
Authors: Alan V. Oppenheim, Rolan W. Schafer
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