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Signals and Systems by Smarajit Ghosh

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SIGNIFICANT POINTS

The Fourier transform of discrete time signal x(n) is denoted by X(w) and it is given by

 

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The Fourier transform of discrete sequence x(n) is given by

 

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where X(ω) is the continuous function of ω and the range of ω is from − π to + π or 0 to 2π.

 

Symmetry Properties of Fourier Transform

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Properties of Fourier Transform

 

Circular Folded Sequence

x (n)N N-point sequence plotted across the circle anti-clockwise ...

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