摘要
文中在研究信号循环平稳特性的基础上给出了一种2FSK信号参数估计方法。基于2FSK信号频域上的单个谱峰与2ASK信号谱的相似性,首先在频谱上将2FSK信号的两个谱峰分离,然后根据2ASK信号的循环谱特征对单个谱峰做参数估计,最后将上述估计值做加权平均得到原2FSK信号的参数估计值。仿真结果表明该算法在信噪比(SNR)高于0dB时,信号参数估计MSE低于10-4。
In this paper a novel parameter estimation method for 2FSK modulated signal based on its cyclostationary features is addressed. According to the similarity between the separeted spectrum of 2FSK signal and the single spectrum of 2ASK signal, the two spectrum peaks of 2FSK signal are first separated, then the parameters of the two separated spectrum peaks of 2FSK signal are estimated by using the cyclostationary features of 2ASK signal, and finally the parameters of 2FSK signal could be obtained by averaging the estimated values of the two separated spectrum peaks. Simulation results show that the MSE of eastimated values are lower than 104 when the Signal Noise Ratio（SNR） is higher than 0dB.
出处
《通信技术》
2009年第7期7-9,共3页
Communications Technology
