In the scheme, a set of feature parameters are extracted from signal spectrum and constellation based on the differences between digital mixed signals and common digital modulation signals.
该方案利用数字混合信号与常用数字调制信号在信号频谱以及星座点的差异提取特征参数进行自动识别。
The shaping of a signal constellation by selecting the boundary of the signal set is used to reduce the average energy of the constellation.
由选定信号集边界的信号星座成形用于降低该星座的平均能量。
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