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discrete inverse fourier transform

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Rotem
Rotem 2012-10-8
I have an = (T0* (exp(-T1)*(2*n*pi/T0*sin((n*pi*(T0-2))/(2*T0 ))-cos((n*pi*(T0-2))/(2*T0 )))+1))/(1+(2*n*pi/T0)^2);
and I need to preform a ifft using this formula
an.*exp(j*n*w0*x)
while n is between -25 to 25
what am I missing? I'm trying to use symsum and ifft functions and plot?
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Walter Roberson
Walter Roberson 2012-10-9
Note that ifourier is for the continuous inverse fourier, not the discrete.
Rotem
Rotem 2012-10-9
编辑：Rotem 2012-10-10
yes but I got a stright line not a hrominc like I think I should get.. I am using the sum let say N = 25 and I get a symbolic answer of a vector of 41 in length using plot with a x vector eq in length to that of the answer and gets a stright line

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