吉林大学学报(工学版) ›› 2019, Vol. 49 ›› Issue (4): 1357-1362.doi: 10.13229/j.cnki.jdxbgxb20180185
• • 上一篇
Yong LIU1(),Fang⁃shun DENG1,Xiao⁃lin LIU1,Si⁃jie MIN2,Peng WANG3
摘要:
针对低信噪比条件下最小频移键控(MSK)信号频率估计的问题,提出混沌双振子频率估计算法,通过混沌振子系统策动力频率与待测信号频率的相互配合,充分利用混沌振子~信号敏感、噪声免疫的特性,实现在低信噪比条件下对待测信号频率的有效估计。理论分析和实验证明了本文算法的有效性。相对于经典的锁相环法和2P次方法,本文算法在低信噪比条件下(如Eb/N0=0 dB时)也能准确估计信号频率,且相对误差在10-2量级以下。
中图分类号:
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