计算机工程与科学2026，Vol.48Issue(4)：709-717,9.DOI:10.3969/j.issn.1007-130X.2026.04.015
一种高精度的频偏估计算法设计及FPGA实现
Design and FPGA implementation of a high-precision frequency offset estimation algorithm
黄寅健 1郑隆浩 1唐立军1
作者信息
- 1. 长沙理工大学物理与电子科学学院,湖南 长沙 410114
- 折叠
摘要
Abstract
Based on the study of the performance of Rife and Quinn algorithms,an improved algo-rithm is proposed to solve the problems of the fluctuating accuracy and weak anti-noise ability in tradi-tional frequency offset estimation algorithm.This algorithm combines the precision advantage of the Rife algorithm when dealing with large frequency offset factors with the stability of the Quinn algo-rithm.It also employs multi-spectral-line interpolation with added weighting coefficients to overcome the problem of misjudging the correction direction when the actual frequency is close to the quantized frequency points.Experimental results demonstrate that the proposed algorithm can maintain high fre-quency estimation accuracy even under low signal-to-noise ratio(SNR)conditions,exhibiting overall more stable performance and closer approximation to the Cramér-Rao lower bound(CRLB)compared to other similar algorithms.Finally,the algorithm was deployed on an FPGA platform,and the results were compared and analyzed with the actual signal frequency,revealing a maximum root mean square error(RMSE)of approximately 16 Hz.关键词
频率估计/Rife算法/Quinn算法/克拉美-罗下界Key words
frequency estimation/Rife algorithm/Quinn algorithm/Cramér-Rao lower bound分类
信息技术与安全科学引用本文复制引用
黄寅健,郑隆浩,唐立军..一种高精度的频偏估计算法设计及FPGA实现[J].计算机工程与科学,2026,48(4):709-717,9.
