Revision as of 09:17, 25 September 2008 by Nchopra (Talk)

Define a periodic DT signal and compute its Fourier series coefficients.

For DT,

$ x[n]=\sum_{k=0}^{N-1} a_k e^{jk\frac{2\pi}{N} n} $

where

$ a_k=\frac{1}{N}\sum_{n=0}^{N-1} x[n] e^{-jk\frac{2\pi}{N} n} $.

Let the signal be

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