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TDM是Time Division Multiplex的简写,译为时分多工,但通常叫TDM较简便.多路工作的通信有FDM和TDM两大类.模拟信号的多路通信是使用FDM,数字信号的多路通信则使用TDM.FDM是频分多工,一路电话信号的频带经过单边带调制,搬移至频谱上某一段位置,另一路电话频带搬移至频谱上的邻近位置,各路分配得不同的、但靠近的频带位置,于是整个频谱由一对导线同时传输.这种频分多
TDM is short for Time Division Multiplex and translates to time-division multiplexing but it is usually easier to call TDM. Multiplexed communication includes FDM and TDM. Multiplexed analogue signals are multiplexed using FDM and digital signals The use of TDM.FDM is frequency division multiplexing, all the way through one-band telephone signal band modulation, moved to a certain location on the spectrum, and the other telephone band moved to the adjacent position on the spectrum, the distribution of different routes, but Close to the band position, so the entire spectrum by a pair of wires at the same time transmission