基于瞬时相位差分的MPSK信号识别与参数估计  

Recognition and Parameter Estimation of MPSK Signals Based on Instantaneous Phase Difference

作　　者：宋春云[1,2] 徐建敏[1,2] 

机构地区：[1]通信系统信息控制技术国家级重点实验室,浙江嘉兴314033 [2]中国电子科技集团公司第三十六研究所,浙江嘉兴314033

出　　处：《通信对抗》2010年第1期33-36,共4页Communication Countermeasures

摘　　要：在现有MPSK信号调制样式识别方法基础上，提出对QPSK、OQPSK、π／4QPSK和8PSK这四种星座图及频谱特征具有一定相似性的MPSK信号进行分类识别及参数估计的方法。识别和参数估计方法建立在瞬时相位差分统计特性和频谱分析基础上。对实际采集的信号进行实验的结果表明，该方法在信噪大于5dB时具有较高的调制样式识别和码速率估计精度。The method of classification of the QPSK, OQPSK, π/4QPSK and 8PSK based on the existing recognition methods has discussed in this paper, because these MPSK signals have similar constellations or spectrum. The method of the recognition and parameter estimation based on the statistical and spectral characters of the instantaneous phase difference （IPD） is proposed. The simulation results of the collected digital signals indicate that this method is availability when the SNR. is higher than 5dB.

关 键 词：调制样式识别 参数估计 相位差分 OQPSK QPSK 

分 类 号：TN911.6[电子电信—通信与信息系统]