
Periodogram• Periodogram is the correct name for thefollowing process*:
• FFT stands for “Fast Fourier Transform”• The FFT algorithm that can be used tocompute thepart.• A periodogram is formed after taking theaverage magnitude squared of the FFT.
Periodogram: Simple Example
1.n = integer2.N = array of numbers from 0 to 2^n3.x = exp(j*2*pi*f*N) + white noise4.pg = abs(FFT)^2 / n5.pgs = 10*log10(pg)
•Calculates spectrum from Real/Imagaxis,......