Howtosignalprocessing
- What are the differences and similarities between DIT and DIF?
- What is dit and dif?
- What is the advantage of radix 2 FFT algorithm in comparison with the classical DFT method?
What are the differences and similarities between DIT and DIF?
Differences: 1) The input is bit reversed while the output is in natural order for DIT, whereas for DIF the output is bit reversed while the input is in natural order. done in place and both need to perform bit reversal at some place during the computation.
What is dit and dif?
DIT (Decimation in time) and DIF( Decimation in frequency) algorithms are two different ways of implementing the Fast Fourier Transform (FFT) ,thus reducing the total number of computations used by the DFT algorithms and making the process faster and device-friendly.
What is the advantage of radix 2 FFT algorithm in comparison with the classical DFT method?
DFT requires no multiplies. The overall result is called a radix 2 FFT. A different radix 2 FFT is derived by performing decimation in frequency. A split radix FFT is theoretically more efficient than a pure radix 2 algorithm [73,31] because it minimizes real arithmetic operations.
