Advantages and disadvantages of FDM

The most important application of FDM (frequency division multiplexing)  is broadcasting, telephone communications. In this article, you will find a lot of pros and cons of FDM to better understand this topic. 

Advantages of FDM:
  • It does not need synchronization between its transmitter  as well as receiver
  • FDM is simpler and easy demodulation
  • Less expensive
  • FDM system does not need synchronization but TDM needs synchronization. It is an advantage of  FDM over TDM
  • FDM provides more latency than TDM
  • Using FDM system  multimedia data can be transferred with very high efficiency and low noise and distortion 
  • FDM system has high reliability
  • It is used for analogue signals
  • In this system due to slow narrowband fading, only one channel gets affected
  • A large number of the signal can be transmitted simultaneously

Disadvantages of  FDM:
  • It is suffering the problem of cross talk
  • FDM is only used only when a few low-speed channels are desired
  • Intermodulation distortion takes place
  • The  circuitry for FDM is complex than TDM
  • FDM requires more hardware than TDM
  • FDM system extremely expensive
  • FDM provides less throughput
  • FDM has not dynamic coordination
  • The full bandwidth of the channel cannot be used on the FDM system
  • The communication must have very large bandwidth
  •  A large number of modulator and filter required 
  • FDM channel can get affected wideband fading 
  • FDM system needs a carrier wave or carrier signal but TDM does not need carrier signal
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