可调光子滤波器微波信号接收码元速率估计

Tunable photon filter microwave signal receiving symbol rate estimation

为了解决传统微波信号接收码元速率估计方法存在精度低与时间长的问题,提出了可调光子滤波器微波信号接收码元速率估计方法。首先对可调光子滤波器微波信号进行小波变换,提取绝对相位调制信号码元之间的相位瞬变信息,然后对信号进行去噪处理与重构,引入自相关方法将码元速率估计问题转换为周期估计问题,从而实现可调光子滤波器微波信号接收码元速率估计,最后仿真实验结果表明,本文方法具有较高的估计精度与较短的估计时间,且信号强度高,为后续的信号处理奠定坚实的基础。

In order to solve the problem of low accuracy and long time of traditional microwave signal receiving symbol rate estimation method,a method of microwave signal receiving symbol rate estimation with tunable photon filter is proposed.Firstly,the wavelet transform is applied to the microwave signal of the tunable photon filter to extract the phase transient information between the absolute phase modulation signal symbols.Then the signal is denoised and reconstructed,and the auto-correlation method is introduced to transform the symbol rate estimation problem into the period estimation problem,so as to realize the symbol rate estimation of the microwave signal received by tunable photon filter.Finally,the simulation experiment results are given.The results show that the proposed method has high estimation accuracy,short estimation time and high signal strength,which lays a solid foundation for subsequent signal processing.