摘要
针对卫星通信中常用的数字调相信号pi／4-QpSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积童的识别算法，该算法利用信号差分的四阶和八阶累积量特征对pi／4-QPSK、8PSK信号进行识别。文章从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。
To investigate the modulation recognition of Phase Shift Keying （PSK） signals widely used in satellite Communication, such as pi/4-QPSK and 8-PSK , an algorithm for modulation recognition based on higher-order cumulants of signal difference is proposed. The modulation of pi/ 4-QPSK and 8PSK will be recognized based on four and eight order cumulants of signal difference. The efficiency of the algorithm is proved in theory. Computer simulations show that the proposed recognition algorithm is high in performance.
出处
《电子对抗》
2007年第3期1-5,共5页
Electronic Warfare
关键词
调制识别
高阶累积量
信号差分
相位编码
modulation recognition
higher-order cumulants
signal difference
Phase Shift Keying
