MATLAB Solving Signal x(n) with DFT in MATLAB

AI Thread Summary
The discussion centers on a project involving the discrete Fourier transform (DFT) of the signal x(n) = (0.5^n) * u(n), where u(n) is the unit step function. The user seeks assistance with MATLAB coding to compute the DFT for three different values: N1 = 50, N2 = 20, and N3 = 11, and also to reconstruct the signal. There is a request for clarification on what N1, N2, and N3 represent, indicating a need for further explanation on the parameters involved in the DFT process. The user expresses a lack of familiarity with MATLAB, emphasizing the need for code examples or guidance.
john21
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hi everyone,
I need help in a project.I have a signal x(n)=(0.5^n)*u(n). i want to find the DFT of the signal for N1=50,N2=20,N3=11 and then the reconstruction of the signal. I don't know anything about MATLAB and i don't have any idea how i'll do this. My problem is the code so if someone can help me please do. thanks!
 
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What are N1, N2, and N3?
 

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