Performance Comparison of Windowed Interpolation FFT and Quasisynchronous Sampling Algorithm for Frequency Estimation

Table 2

Comparisons of absolute errors of frequency estimation without frequency fluctuations.

	QSSA		WIFFT (MDW 4-III)
	;	;	512	1024
kHz
kHz
Additions	2048	3200	13824	30720
Multiplications	33029	41286	9216	20480