[SS] Fourier Transform : Frequency Shifting
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.../Signals and Systems
어떤 성질인가? x(t)ejΩ0t↔X(Ω−Ω0) x(t) : time domain function X(Ω) : Fourier representation, Foruier Transform Ω0 : Frequency Shift (constant) Frequency Domain에서 Ω0 만큼 shifting 시킬 경우, Time Domain에서는 ejΩ0t가 곱해지게 된다. 증명 $$\begin{aligned} \frac{1}{2\pi} \displaystyle \int^\infty_{-\infty} X(\Omega - \Omega_0)e^{j\Omega}t d\Omega ..