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fdm vs tdm vs wdm

Question

fdm vs tdm vs wdm

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Solution

Sure, I can explain the differences between FDM, TDM, and WDM.

  1. FDM (Frequency Division Multiplexing): This is a technique where the total bandwidth available is divided into a series of non-overlapping frequency sub-bands, each used for one communication channel. In simple terms, it allows multiple users to share a common channel by assigning them different frequencies.

  2. TDM (Time Division Multiplexing): This technique divides the signal into different time slots, with each slot dedicated to a specific user. In other words, users take turns, each one getting a specific interval of time to use the channel.

  3. WDM (Wavelength Division Multiplexing): This technique is used in fiber optic cables. It's similar to FDM, but instead of dividing by frequency, it divides by light wavelength. This allows multiple optical signals to be put onto the same fiber optic cable by using different light wavelengths.

In summary, all three techniques are used to allow multiple users to share the same communication medium, but they do it in different ways: FDM by frequency, TDM by time, and WDM by wavelength.

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