- #1
okami11408
- 14
- 0
Normally, when we dealing with power signal in frequency domain we usually use power spectral density.
My question is why is that? Why we define the power P(f) this way.
http://img21.imageshack.us/img21/6786/powerec.jpg
This makes no sense to me, Why don't we just Fourier transform p(t) therefore we also get P(f)
http://img198.imageshack.us/img198/8603/power2a.jpg
I just don't get the concept of power spectral density.
Please help!
My question is why is that? Why we define the power P(f) this way.
http://img21.imageshack.us/img21/6786/powerec.jpg
This makes no sense to me, Why don't we just Fourier transform p(t) therefore we also get P(f)
http://img198.imageshack.us/img198/8603/power2a.jpg
I just don't get the concept of power spectral density.
Please help!
Last edited by a moderator: