调相信号自动识别的高阶累积量方法

在信号调制类型识别中,在相干、同步条件下实现调制识别是一类比较典型的研究方法,假设已经实现精确的载波同步并已知精确的定时同步信息.先在相干、同步条件下,利用高阶累积量来进行MPSK信号调制类型识别,然后对频率误差和位定时误差对识别算法带来的影响进行了研究.结果表明算法对一定的频差和定时误差具有鲁棒性.

Research on Automatic Classification of Phase Modulated Signals Using High-order Cumulant

In modulation classification, the typical method is operated in a coherent, synchronous environment, which supposes carrier and symbol synchronization have been achieved. In this paper, firstly we take use of high-order cumulant to classify the MPSK signals under the coherent and synchronous environment. Then we discuss the influence produced by frequency offset and timing error. The simulation resulsts show this algorithm is robust in case of frequency offset and timing error to a certain extent.