CAJ | 학술논문

使用现代谱估计技术估计出平滑的调制信号功率谱,从信号的功率谱和信号平方的功率谱中提取出谱峰个数和谱峰的峰态量两个特征参数.在不需要先验知识的情况下,可对常用的MPSK和MFSK信号进行自动识别.仿真结果表明,两个新特征值在信噪比较低时（-2 dB）仍然能有较高的识别率.
사용현대보고계기술고계출평활적조제신호공솔보,종신호적공솔보화신호평방적공솔보중제취출보봉개수화보봉적봉태량량개특정삼수.재불수요선험지식적정황하,가대상용적MPSK화MFSK신호진행자동식별.방진결과표명,량개신특정치재신조비교저시（-2 dB）잉연능유교고적식별솔.
A novel modulation recognition method based on modem spectral estimation is proposed. The number and kurtosis of spectral peaks are extracted from signal power spectrum and the power spectrum of second power of signal. These two features are ro- bust and easily obtained. The proposed method can recognize MPSK and MFSK signals without any prior knowledge. Simulation results show that this method can achieve high recognition accuracy when SNR is above and equal to- 2dB.