The LTI system is referred to as a 90 0 ? phase shifter and is used to
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The LTI system is referred to as a 900 ?phase shifter and is used to generate what is referred to as an analytic signal w[n] as shown in Figure. Specifically, the analytic signal w[n] is a complex-valued signal for which, if X(ej?) is as shown in Figure, determine and sketch W(ej?), the Fourier transform of the analytic signal w[n] = x[n] + j y[n].
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Discrete Time Signal Processing
ISBN: 978-0137549207
2nd Edition
Authors: Alan V. Oppenheim, Rolan W. Schafer
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