一、背景在载波通信中,载频供给系统的经典方式是采用非线性元件组成的谐波发生器,由一个基准信号产生按某个频率间隔的一系列信号,然后由窄带滤波器分别加以提取。这种方式尚存在某些不足之处,利用模拟信道进行数据通信时,则进一步暴露了这一点。因此,探讨新的载供技术是有必要的。 I. Background In carrier communication, the classic way of carrier frequency supply system is to use a harmonic generator composed of non-linear elements to generate a series of signals at a certain frequency interval from a reference signal and extract them respectively by a narrow-band filter . This approach is still some shortcomings, the use of analog channels for data communications, it is further exposed this point. Therefore, it is necessary to explore new carrier technologies.