Youssef, if you want to obtain the power spectral density PSD (W/Hz) you should divide the power spectrum Power to equivalent noise bandwidth ENBW of the window.
S1 = sum(win);
S2 = sum(win.^2);
ENBW = Fs*S2/(S1^2);
PSD = Power/ENBW;
In your case there is no window (or there is rectangular one), so ENBW = Fs/L.

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01 Jul 2014

Extended DFT
Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector.

Good question. Like as FFT<>IFFT, also EDFT<>IFFT is a pair of DFTs adequately connecting two domains. Unlike FFT, the EDFT adapts to the frequency domain (see details on site http://arxiv.org/abs/1303.2033) and this leads to data extrapolation. Thus, "Super Resolution" is dictated by the known laws physics, from where the longer data, the higher the resolution. Thanks.

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03 Feb 2014

Extended DFT
Program EDFT produce high-resolution N-point DFT for N greater than the length of data vector.

Comment only