现代电子技术2025，Vol.48Issue(11)：17-22,6.DOI:10.16652/j.issn.1004-373x.2025.11.003
基于USRP的通信信号载波频率估计研究
Research on communication signal carrier frequency estimation based on USRP
摘要
Abstract
It is difficult to estimate the carrier frequency of communication signals under α-stable distribution noise,so an improved frequency domain centering algorithm is proposed.Nonlinear transformation and adaptive threshold are used to reduce the interference of α-stable distribution noise on the received signal.The peak value above the threshold value is estimated iteratively by frequency domain centering algorithm.GNU Radio and universal software radio peripheral(USRP)are used to collect real communication signals to verify the proposed algorithm.Experimental results show that when MSNR(mixed signal-to-noise ratio)≤-5 dB,the performance of carrier frequency estimation is improved significantly,so the proposed algorithm has a certain engineering practicability.关键词
通信信号/非线性变换/α稳定分布噪声/载波频率估计/USRP/频域居中算法Key words
communication signal/nonlinear transformation/α-stable distribution noise/carrier frequency estimation/USRP/frequency domain centering algorithm分类
信息技术与安全科学引用本文复制引用
马宇杰,郭兴龙..基于USRP的通信信号载波频率估计研究[J].现代电子技术,2025,48(11):17-22,6.基金项目
国家自然科学基金资助项目(62074086) （62074086）
