[BEST] Advantages, Applications of FDM or Frequency Division Multiplexing
The important applications of FDM(Frequency Division Multiplexing) are broadcasting, telephone communications, Television (TV) Networks, etc. In this article, you will find a lot of important applications of FDM with detailed explanations. You will also find the advantages and disadvantages of FDM.
Applications of FDM
FDM has more important applications than TDM. Some applications of FDM are given below.
1. FDM is used in Radio Broadcasting. Every Radio Station has its own frequency band. When we turn on our radio then signals from all radio stations are coming on our radio. We can choose the frequency band by rotating the knob to connect our radio with a particular radio station.
2. FDM is also used in Television Broadcasting. Here the same concept is used in radio broadcasting.
3. Frequency Division Multiplexing System is used in the telephone system. FDM helps to transmit multiple phone calls over a single transmission line or a single link.
4. Frequency Division Multiplexing System is also used in the Satelite Communication system. FDM helps to transmit multiple channels of data in satellite communication.
5. In our broadband connection system, FDM is also used. The FDM system is used in Digital Subscriber Line or DSL Modems, which helps to transmit a huge amount of computer data for accessing the Internet over a single transmission line. It is a very important application of FDM.
6. FDM is used in stereo Frequency Modulation or FM transmission systems.
7. FDM is also used in Amplitude Modulation or AM radio transmission systems.
8. Frequency Division Multiplexing or FDM system is used for multimedia data such as video, audio, and image transmission.
9. In earlier days, FDM was used in harmonic telegraphy communication systems.
10. In earlier days, FDM was used in the cellular telephone system.
Advantages of FDM
The important advantages of FDM are given below.
1. Frequency Division Multiplexing or FDM does not need synchronization but TDM or Time Division Multiplexing needs synchronization. It is an advantage of FDM over TDM.
2. FDM provides more latency than TDM.
3. The demodulation process in FDM is very easy and simple.
4. Using the FDM system a large amount of data can be transmitted than TDM. It is a great advantage of FDM over TDM.
5. Using an FDM system multimedia data can be transferred with very high efficiency and low noise and distortion.
6. The FDM system has high reliability.
Disadvantages of FDM
Some disadvantages of FDM are given below.
1. A Frequency Division Multiplexing system needs a carrier wave or carrier signal but a Time Division Multiplexing system does not need a carrier signal.
2. The circuitry for FDM is more complex than TDM. FDM requires more hardware than TDM.
3. The Frequency Division Multiplexing system is extremely expensive.
4. There is intermodulation distortion that occurs in FDM.
5. There is a need for a large number of modulators and filters in FDM.
6. FDM provides less throughput.
7. The full bandwidth of a channel cannot be used in the Frequency Division Multiplexing system.
8. FDM does not have any dynamic coordination.
In Frequency Division Multiplexing System, various signals of different frequencies are combined and transmitted over a single transmission line. Here a Carrier wave or carrier signal is used to divide and determine the signal of different frequencies. An unusual bandwidth which is called a Guard Band is used to separate the signals having different frequencies. Guard Band prevents the overlapping of signals. Generally, in the Frequency Division Multiplexing System, the bandwidth of the transmission line or the link is always greater than the required bandwidth for transmitting of all signals.
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