是本科毕设的题目，用于建立主成分分析模型，包括调制，解调，信噪比计算，抑制载波型差分相位调制，构成不同频率的调制信号，一种流形学习算法（很好用），信号维数的估计。- The title of the commercial is undergraduate course you Principal component analysis model for establishing, Includes the modulation, demodulation, signal to noise rat