Following are the difference between time division multiplexing and frequency division multiplexing.
|TDM stands for time division multiplexing.
||FDM stands for frequency division multiplexing.
|TDM is preferred for the digital signals.
||FDM is preferred for digital signals.
|The signals to be multiplexed can occupy the entire bandwidth but they are isolated in the time domain.
||The signals to be multiplexed are added in time domain. But they occupy different slots in the frequency domain.
|Synchronization is required.
||Synchronization is not required.
|Cross talk like problem not occurs in TDM.
||It suffers from cross-talk like problems due to imperfect band pass filter.
|Only a few TDM channels will be affected due to fading.
||Due to wideband fading in the transmission medium, all the FDM channels are affected.