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多路通信是指利用一条公共线路同时传输若干路相互无关的消息。为了使线路能进行多路传输而不互相干扰,就需要使各种信号具有不同的特征,以便在接收端能根据这一特征区分出各路信号。广泛采用的区分方式有频分制和时分制两种。一、频分制频分制是指按频率划分制度,各路信号在同一线路中占用的频率不同,如图1所示的一个三路无线电通信的组成方框图,图中的发送复用设备为合路信号之用。图2给出了一个三路话音信号合路的情况,其
Multi-channel communication refers to the use of a public line at the same time several roads have nothing to do with the news. In order for the lines to be multiplexed without interfering with each other, it is necessary to make the various signals have different characteristics so that the signals at the receiving end can be distinguished from each other based on this feature. The widely used methods of division are frequency division and time division two. First, the frequency division system is divided by frequency division system, each signal in the same line occupy a different frequency, as shown in Figure 1, a three-way radio communication block diagram of the figure to send multiplexing equipment Used together signal. Figure 2 shows a three-way voice signal combined with the situation