The definition of the complex signal, real modulation and complex modulation, the complex low-pass signal representation of real bandpass signal, SSB complex mo.

• 文中介绍了复信号的定义、实调制与复调制、用复低通信号表示带通信号、单边带复调制与解调,以及数字单边带韦瓦复调制在数字化载波机中的应用。