High Accuracy and Low Complexity Frequency Offset Estimation Based on All-Phase FFT for M-QAM Coherent Optical Systems
Signal Processing
2021-05-24 v1
Abstract
A low complexity frequency offset estimation algorithm based on all-phase FFT for M-QAM is proposed. Compared with two-stage algorithms such as FFT+CZT and FFT+ZoomFFT, our algorithm can lower computational complexity by 73% and 30% respectively, without loss of the estimation accuracy.
Keywords
Cite
@article{arxiv.2105.10394,
title = {High Accuracy and Low Complexity Frequency Offset Estimation Based on All-Phase FFT for M-QAM Coherent Optical Systems},
author = {Qian Li},
journal= {arXiv preprint arXiv:2105.10394},
year = {2021}
}
Comments
3 pages, 3 figures