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电力线载波是目前探讨较多的一种数据传送技术。这里采用超窄带方法将成千路信号设置在很小的带宽中， 每一发送器占用独特的频率，同时发送数据信息，由站内的接收设备接收各路信号， 通过特定的处理方法还原数据信息。文中介绍了超窄带数据传送系统的设计和接收部分的实现方案
Power line carrier is currently discussed more of a data transmission technology. Here, the ultra-narrowband method is used to set thousands of signals in a small bandwidth. Each transmitter occupies a unique frequency. At the same time, it sends data information, receives signals of each channel by receiving devices in the station, and restores data information through a specific processing method. The paper introduces the design of the ultra-narrow band data transmission system and the realization scheme of the receiving part