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ahmed
Posts:
2
Registered:
11/26/12


recursive DFT
Posted:
Dec 30, 2012 12:16 AM


how i can do a recursive discrete fourier transform(DFT) for a decaying sinusoidal signal in simulink to achieve the next algorithm : Several discrete frequency steps are used by increasing the time window from 32 samples per cycle to 38 samples per cycle. That is, the measurement window is increased in integral steps of 32, 33, 34, 35, 36, 37 to 38 samples as the frequency is decreasing from 60 Hz to 50 Hz. A total of seven recursive DFT calculations are implemented (one for each of the sample window lengths) in parallel and the appropriate phasors are selected based on the measured frequency. i want know how can i do that .



