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perplexabot
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Homework Statement
For now I am trying to find the power spectral density only.
The Attempt at a Solution
- From the given graph, I got g(t) = -1 + 2rect(t/2), with a perdiod of 4s
- PSD = Sg(f) = lim(T [itex]\rightarrow\infty[/itex] ) [itex]\frac{1}{2T}[/itex] || G(f) || [itex]^{2}[/itex]
- My Fourier transform of g(t), G(f), I got to = - [itex]\delta[/itex] (f) + 4sinc(2f)
I want to continue but I am not sure this is correct? If it is correct, I need to get the magnitude and square it. I don't know why I am not too comfortable with magnitude. So in this case i have || - [itex]\delta[/itex] (f) + 4sinc(2f) || which I know ≠ ||- [itex]\delta[/itex] (f) || + || 4sinc(2f) ||. So what do I do? How do I find magnitude?
EDIT: Can this post be moved to the electrical engineering section? I feel it is more likely to get a reply there.
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