December 2005
Intermediate to advanced
475 pages
12h 6m
English
Content preview from Signals and Systems
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11.8.1 Properties of FFT
The N point DFT sequence is given by
which is known as the twiddle factor and it exhibits symmetry and periodicity properties.
11.8.1.1 Periodicity property of WN
This property states that 
Proof:
WN is represented by 
Since e−j2π = 1, we have from Eq. (11.97)
11.8.1.2 Symmetry property
This property states ...
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