Introduction to Digital Signal and System Analysis - Tutorsindia
Introduction to Digital Signal and System Analysis - Tutorsindia
Introduction to Digital Signal and System Analysis - Tutorsindia
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<strong>Introduction</strong> <strong>to</strong> <strong>Digital</strong> <strong>Signal</strong> <strong>and</strong> <strong>System</strong> <strong>Analysis</strong><br />
Discrete Fourier Transform<br />
Figure 6.4 Number of complex multiplication in DFT<br />
It can be divided in<strong>to</strong> 2 length N=4 DFTs , i.e.<br />
X [ k]<br />
=<br />
3<br />
<br />
r=<br />
0<br />
x[2r]<br />
W<br />
3<br />
rk k<br />
4<br />
+ W8<br />
x[2r<br />
+ 1]<br />
r=<br />
0<br />
W<br />
rk<br />
4<br />
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