[Discuss-gnuradio] Re: Spectrum Sense - Convert FFT Data into dBm proportional values

[Bruhtesfa Ebrahim]

TMob wrote:

> Is it correct to just subtract 20 times the log of the window power to
> remove the window processing gain from the data?
> Is subtracting the gain correct to get somewhat proportional values?
> 
> Thank you very much in advance!
> 
> TMob


Eventhough, I am not clear about what you are doing(i am a new one),I 
know from FFT theories that the computed FFT should be normalized by 
1/sqrt(N) to preserve the energy(where N is size of FFT u take).
That means, 10*log(N) should be substracted from the computed FFT power 
to get same power as the one computed in time domain.

Bruhtesfa
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