[1 for 0≤ ≤0.5 and 0≤|w₂|≤0.5 Let H₁ (@,,@₂) = { 0 otherwise Find the h(n,,n,) (its inverse Fourier Transform)

Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Let H₁ (@,,@₂) =
[1 for 0≤ ≤0.57 and 0≤|w₂|≤0.57
0 otherwise
Find the h(n,,n,) (its inverse Fourier Transform)
Transcribed Image Text:Let H₁ (@,,@₂) = [1 for 0≤ ≤0.57 and 0≤|w₂|≤0.57 0 otherwise Find the h(n,,n,) (its inverse Fourier Transform)
Expert Solution
Theory

The inverse Fourier transform is a mathematical formula that converts a signal in the frequency domain ω to one in the time (or spatial) domain t.

A time domain signal f(t) is obtained by demodulating a frequency domain signal F(ω) using a special sinusoidal wave ejωt across all time (from negative infinity to positive infinity) via:

f(t)  = [1/(2 π)] ·  ∫ F(ω) · ejωt dω
j represents a square root of -1(an imaginary number); ejωt is a sinusoidal wave with an imaginary component as per Euler's formula:

ejωt = cos(ωt) + j · sin(ωt)

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