Fourier Series Coefficients Ck
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I am not at all skilled in Matlab and my teacher just expects us to know how to code. I am asking for a lot of help here. I have a problem with a graph of periodic repition and N=10 (N is the period) with length L=5. The amplitude of the graph is 1. So when 0<=n<L x(n) equals 1, otherwise it is 0. How would I calculate the fourier series coefficeints and plot the absolute value of Ck^2 (when k=0:N-1)?
PLEASE HELP I'M DESPERATE!
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Accepted Answer
Rick Rosson
on 8 Mar 2013
Edited: Rick Rosson
on 8 Mar 2013
Here is a start:
N = 10;
L = 5;
n = 0:N-1
x = ...
C = ...
figure;
stem(n,x);
figure;
stem(n,abs(C));
For help on Fourier:
>> doc fft
>> doc fftshift
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More Answers (1)
Walter Roberson
on 8 Mar 2013
Are you talking about a square wave with duty cycle 1/2 and amplitude 1? Or are you talking about a single square pulse? If you are talking about a single square pulse, it is a difference of step functions.
Are you going for analytic calculation or for numeric calculation?
2 Comments
Walter Roberson
on 8 Mar 2013
Your description is not compatible with it having 5 pulses. You wrote "when 0<=n<L x(n) equals 1, otherwise it is 0" which describes a single pulse over [0,L) with L=5
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