TY - GEN
T1 - An effective harmonic parameters estimation algorithm based on transformed FFT sequence
AU - Wang, Xuming
AU - Lei, Kejun
AU - Yang, Xi
AU - Wang, Xiangming
N1 - Publisher Copyright:
© 2019 ACM.
PY - 2019/12/6
Y1 - 2019/12/6
N2 - In the practical harmonic analysis, the classical windowed interpolation methods usually have low estimation accuracy and high implementation complexity. Based on the analysis of attenuation characteristics of the fast Fourier transform (FFT) sequence, a novel harmonic analysis method with high precision by using a simple transformation is introduced. Our algorithm performs a simple transformation on the original FFT sequence, which reduces the interference among different spectral lines, and thus effectively suppresses the spectrum leakage. Based on this, the estimation formulas for the amplitude and phase are derived. The simulation results show that the proposed algorithm can effectively improve the accuracy of parameter estimation. In addition, compared with the classical windowed interpolation methods, the new method has lower computation complexity.
AB - In the practical harmonic analysis, the classical windowed interpolation methods usually have low estimation accuracy and high implementation complexity. Based on the analysis of attenuation characteristics of the fast Fourier transform (FFT) sequence, a novel harmonic analysis method with high precision by using a simple transformation is introduced. Our algorithm performs a simple transformation on the original FFT sequence, which reduces the interference among different spectral lines, and thus effectively suppresses the spectrum leakage. Based on this, the estimation formulas for the amplitude and phase are derived. The simulation results show that the proposed algorithm can effectively improve the accuracy of parameter estimation. In addition, compared with the classical windowed interpolation methods, the new method has lower computation complexity.
KW - Amplitude estimation
KW - High-precision harmonic analysis
KW - Phase estimation
KW - Sequence transformation
KW - Spectrum leakage
UR - https://www.scopus.com/pages/publications/85123040388
U2 - 10.1145/3386415.3387010
DO - 10.1145/3386415.3387010
M3 - 会议稿件
AN - SCOPUS:85123040388
T3 - ACM International Conference Proceeding Series
BT - Proceedings of the 2nd International Conference on Information Technologies and Electrical Engineering, ICITEE 2019
PB - Association for Computing Machinery
T2 - 2nd International Conference on Information Technologies and Electrical Engineering, ICITEE 2019
Y2 - 6 December 2019 through 7 December 2019
ER -